{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "machine-screws-inch-asme-b18-6-3",
 "name": "Machine screws, inch (ASME B18.6.3): pan, 82° flat, round, truss, fillister heads #0 to 1/2 — head, slot and recess sizes + envelope models",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the head diameter, head height, slot and Phillips recess sizes of a #6-32 or 1/4-20 machine screw (pan, flat, round, truss, fillister)?",
 "tags": [
  "machine screw",
  "pan head",
  "flat head",
  "round head",
  "truss head",
  "fillister",
  "slotted",
  "phillips",
  "asme b18.6.3",
  "inch",
  "fastener",
  "82 degree"
 ],
 "aliases": [
  "#6-32 pan head screw dimensions",
  "6-32 machine screw head diameter",
  "8-32 pan head dimensions",
  "10-24 flat head machine screw head diameter",
  "1/4-20 truss head screw",
  "machine screw head size chart",
  "asme b18.6.3",
  "82 degree flat head machine screw dimensions",
  "round head machine screw dimensions",
  "10-32 pan head screw head height",
  "machine screw slot width",
  "phillips pan head machine screw size chart",
  "4-40 pan head screw head diameter",
  "fillister head machine screw dimensions",
  "machine screw step file"
 ],
 "overall_mm": {
  "length": 32.5,
  "width": 25.1,
  "height": 32.5
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 54,
 "url": "https://xemstudio.com/objects/machine-screws-inch-asme-b18-6-3/",
 "sheet_txt": "https://xemstudio.com/objects/machine-screws-inch-asme-b18-6-3/sheet.txt",
 "sheet": {
  "basis": "ASME B18.6.3 tables as printed by GlobalFastener (pan T17, 82° flat T1), Engineers Edge (pan, recess), a maker sheet (round, ASME B18.6.3-2002), a maker sheet (truss, 2010) and Westfield / AFT (fillister); thread series from ASME B1.1 as printed by Engineering ToolBox; 54 envelope models as files",
  "overall_mm": {
   "length": 32.5,
   "width": 25.1,
   "height": 32.5
  },
  "notes": [
   "Inch dimensions as printed on the ASME B18.6.3 tables: A = head diameter, H or k = head height, J or n = slot width, T or t = slot depth, max / min. Columns after the size are TPI for the coarse (UNC) and fine (UNF) series (#0 exists only as 0-80 UNF), the head dimensions, and 'other' (pan head radius R and Phillips recess diameter and width; round and truss recess diameter M, recess depth G and driver number; flat head angle). The last column is the max head diameter and height converted to mm (computed, x 25.4).",
   "Cross-checks: GlobalFastener's ASME B18.6.3-2013 slotted pan table and Engineers Edge's ANSI B18.6.3 pan table agree on head diameter A, head height H, head radius R, slot width J and slot depth T for every size #0 to 3/4 (Engineers Edge does not label max or min, its values equal the max column); AFT's pan table agrees on the head diameter and height maxima (for example #6: 0.270 and 0.082). AFT's 82° flat table (dk .262 / .238 and k .083 for #6) agrees with GlobalFastener's ASME B18.6.3-2013 Table 1. The round table is Tanner Bolt's ASME B18.6.3-2002 sheet and the truss table a single maker sheet (2010 edition); neither was cross-checked against a second source. Older and newer editions differ slightly in places, so check the edition your drawing calls out.",
   "Fillister heads: Westfield's UNC table and AFT's fillister table print identical numbers but both have misaligned column headers. The first pair is the head diameter A (max / min, for example #6 0.226 / 0.208) and is shown; the other pairs are shown by print position only ('printed pair 2, 3'), not named, because neither source labels them in a way that can be checked. For that reason no fillister models are drawn. The inch fillister numbers also appear in McMaster-Carr's fillister catalogue page, linked below.",
   "The 82° flat head (ASME B18.6.3 Table 1) has a head angle of 82° max and 80° min on every size, and a published head height 'k ref'. Screws at or below a stated length (1/8 in for #0 to #3, 3/16 in for #4 to #6, and so on up to 3/4 in for 1/2) have undercut heads (GlobalFastener note). The model uses the 82° cone from A max to the nominal body diameter; its height is computed from those two numbers and is shorter than the published k ref, which is not used for the geometry.",
   "Files are Xem-drawn envelopes at true nominal size: pan = cylinder A max x H max with the published head radius R max on the top edge; round and truss = a spherical cap through A max and H max (the real head has a short cylindrical side that no source gave as a number); flat = the 82° cone. All have the slot J max wide and T min deep, and a plain shank at the nominal diameter. No thread, no Phillips cross (only its diameter and width are published) and no point. Example lengths (0.25 in for #0 to #3, 0.5 in for #4 to #12, 0.75 in for 1/4 to 3/8, 1 in for 7/16 and 1/2) are Xem's choice. Pan: #0 to 1/2 (15), flat: #0 to 1/2 (15), round: #2 to 1/2 (12), truss: #2 to 1/2 (12).",
   "Overlap: the older page imperial-machine-screws lists #4-40, #6-32, #8-32 and 1/4-20 (clearance and tap drills, socket head files). Socket head cap screws, inch: socket-head-cap-screws-inch-full. Thread, tap drill and clearance values: thread-reference-tap-drills-clearance."
  ],
  "table": {
   "columns": [
    "head style",
    "size",
    "TPI UNC / UNF",
    "head dia A max / min (in)",
    "head height H max / min (in)",
    "slot width J max / min (in)",
    "slot depth T max / min (in)",
    "other published values (in)",
    "head dia x height, max (mm, computed)"
   ],
   "rows": [
    [
     "pan (slotted / Phillips)",
     "#0",
     "— / 80",
     "0.116 / 0.104",
     "0.039 / 0.031",
     "0.023 / 0.016",
     "0.022 / 0.014",
     "head radius R max 0.020; Phillips recess dia 0.067, width 0.013 (Engineers Edge)",
     "2.95 x 0.99"
    ],
    [
     "pan (slotted / Phillips)",
     "#1",
     "64 / 72",
     "0.142 / 0.130",
     "0.046 / 0.038",
     "0.026 / 0.019",
     "0.027 / 0.018",
     "head radius R max 0.025; Phillips recess dia 0.074, width 0.014 (Engineers Edge)",
     "3.61 x 1.17"
    ],
    [
     "pan (slotted / Phillips)",
     "#2",
     "56 / 64",
     "0.167 / 0.155",
     "0.053 / 0.045",
     "0.031 / 0.023",
     "0.031 / 0.022",
     "head radius R max 0.035; Phillips recess dia 0.104, width 0.017 (Engineers Edge)",
     "4.24 x 1.35"
    ],
    [
     "pan (slotted / Phillips)",
     "#3",
     "48 / 56",
     "0.193 / 0.180",
     "0.060 / 0.051",
     "0.035 / 0.027",
     "0.036 / 0.026",
     "head radius R max 0.037; Phillips recess dia 0.112, width 0.019 (Engineers Edge)",
     "4.90 x 1.52"
    ],
    [
     "pan (slotted / Phillips)",
     "#4",
     "40 / 48",
     "0.219 / 0.205",
     "0.068 / 0.058",
     "0.039 / 0.031",
     "0.040 / 0.030",
     "head radius R max 0.042; Phillips recess dia 0.122, width 0.019 (Engineers Edge)",
     "5.56 x 1.73"
    ],
    [
     "pan (slotted / Phillips)",
     "#5",
     "40 / 44",
     "0.245 / 0.231",
     "0.075 / 0.065",
     "0.043 / 0.035",
     "0.045 / 0.034",
     "head radius R max 0.044; Phillips recess dia 0.158, width 0.028 (Engineers Edge)",
     "6.22 x 1.90"
    ],
    [
     "pan (slotted / Phillips)",
     "#6",
     "32 / 40",
     "0.270 / 0.256",
     "0.082 / 0.072",
     "0.048 / 0.039",
     "0.050 / 0.037",
     "head radius R max 0.046; Phillips recess dia 0.166, width 0.028 (Engineers Edge)",
     "6.86 x 2.08"
    ],
    [
     "pan (slotted / Phillips)",
     "#8",
     "32 / 36",
     "0.322 / 0.306",
     "0.096 / 0.085",
     "0.054 / 0.045",
     "0.058 / 0.045",
     "head radius R max 0.052; Phillips recess dia 0.182, width 0.030 (Engineers Edge)",
     "8.18 x 2.44"
    ],
    [
     "pan (slotted / Phillips)",
     "#10",
     "24 / 32",
     "0.373 / 0.357",
     "0.110 / 0.099",
     "0.060 / 0.050",
     "0.068 / 0.053",
     "head radius R max 0.061; Phillips recess dia 0.199, width 0.031 (Engineers Edge)",
     "9.47 x 2.79"
    ],
    [
     "pan (slotted / Phillips)",
     "#12",
     "24 / 28",
     "0.425 / 0.407",
     "0.125 / 0.112",
     "0.067 / 0.056",
     "0.077 / 0.061",
     "head radius R max 0.078; Phillips recess dia 0.259, width 0.034 (Engineers Edge)",
     "10.79 x 3.17"
    ],
    [
     "pan (slotted / Phillips)",
     "1/4",
     "20 / 28",
     "0.492 / 0.473",
     "0.144 / 0.130",
     "0.075 / 0.064",
     "0.087 / 0.070",
     "head radius R max 0.087; Phillips recess dia 0.281, width 0.036 (Engineers Edge)",
     "12.50 x 3.66"
    ],
    [
     "pan (slotted / Phillips)",
     "5/16",
     "18 / 24",
     "0.615 / 0.594",
     "0.178 / 0.162",
     "0.084 / 0.072",
     "0.106 / 0.085",
     "head radius R max 0.099; Phillips recess dia 0.350, width 0.059 (Engineers Edge)",
     "15.62 x 4.52"
    ],
    [
     "pan (slotted / Phillips)",
     "3/8",
     "16 / 24",
     "0.740 / 0.716",
     "0.212 / 0.195",
     "0.094 / 0.081",
     "0.124 / 0.100",
     "head radius R max 0.143; Phillips recess dia 0.389, width 0.065 (Engineers Edge)",
     "18.80 x 5.38"
    ],
    [
     "pan (slotted / Phillips)",
     "7/16",
     "14 / 20",
     "0.863 / 0.837",
     "0.247 / 0.228",
     "0.094 / 0.081",
     "0.142 / 0.116",
     "head radius R max 0.153; Phillips recess dia 0.413, width 0.068 (Engineers Edge)",
     "21.92 x 6.27"
    ],
    [
     "pan (slotted / Phillips)",
     "1/2",
     "13 / 20",
     "0.987 / 0.958",
     "0.281 / 0.260",
     "0.106 / 0.091",
     "0.161 / 0.131",
     "head radius R max 0.175; Phillips recess dia 0.435, width 0.071 (Engineers Edge)",
     "25.07 x 7.14"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#0",
     "— / 80",
     "0.112 / 0.096",
     "k ref 0.035",
     "0.023 / 0.016",
     "0.015 / 0.010",
     "head angle 82° max / 80° min",
     "2.84 x (cone 0.76, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#1",
     "64 / 72",
     "0.137 / 0.120",
     "k ref 0.043",
     "0.026 / 0.019",
     "0.019 / 0.012",
     "head angle 82° max / 80° min",
     "3.48 x (cone 0.94, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#2",
     "56 / 64",
     "0.162 / 0.144",
     "k ref 0.051",
     "0.031 / 0.023",
     "0.023 / 0.015",
     "head angle 82° max / 80° min",
     "4.11 x (cone 1.11, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#3",
     "48 / 56",
     "0.187 / 0.167",
     "k ref 0.059",
     "0.035 / 0.027",
     "0.027 / 0.017",
     "head angle 82° max / 80° min",
     "4.75 x (cone 1.29, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#4",
     "40 / 48",
     "0.212 / 0.191",
     "k ref 0.067",
     "0.039 / 0.031",
     "0.030 / 0.020",
     "head angle 82° max / 80° min",
     "5.38 x (cone 1.46, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#5",
     "40 / 44",
     "0.237 / 0.215",
     "k ref 0.075",
     "0.043 / 0.035",
     "0.034 / 0.022",
     "head angle 82° max / 80° min",
     "6.02 x (cone 1.64, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#6",
     "32 / 40",
     "0.262 / 0.238",
     "k ref 0.083",
     "0.048 / 0.039",
     "0.038 / 0.024",
     "head angle 82° max / 80° min",
     "6.65 x (cone 1.81, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#8",
     "32 / 36",
     "0.312 / 0.285",
     "k ref 0.100",
     "0.054 / 0.045",
     "0.045 / 0.029",
     "head angle 82° max / 80° min",
     "7.92 x (cone 2.16, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#10",
     "24 / 32",
     "0.362 / 0.333",
     "k ref 0.116",
     "0.060 / 0.050",
     "0.053 / 0.034",
     "head angle 82° max / 80° min",
     "9.19 x (cone 2.51, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "#12",
     "24 / 28",
     "0.412 / 0.380",
     "k ref 0.132",
     "0.067 / 0.056",
     "0.060 / 0.039",
     "head angle 82° max / 80° min",
     "10.46 x (cone 2.86, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "1/4",
     "20 / 28",
     "0.477 / 0.442",
     "k ref 0.153",
     "0.075 / 0.064",
     "0.070 / 0.046",
     "head angle 82° max / 80° min",
     "12.12 x (cone 3.32, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "5/16",
     "18 / 24",
     "0.597 / 0.556",
     "k ref 0.191",
     "0.084 / 0.072",
     "0.088 / 0.058",
     "head angle 82° max / 80° min",
     "15.16 x (cone 4.16, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "3/8",
     "16 / 24",
     "0.717 / 0.670",
     "k ref 0.230",
     "0.094 / 0.081",
     "0.106 / 0.070",
     "head angle 82° max / 80° min",
     "18.21 x (cone 5.00, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "7/16",
     "14 / 20",
     "0.760 / 0.715",
     "k ref 0.223",
     "0.094 / 0.081",
     "0.103 / 0.066",
     "head angle 82° max / 80° min",
     "19.30 x (cone 4.71, computed)"
    ],
    [
     "flat countersunk 82° (slotted)",
     "1/2",
     "13 / 20",
     "0.815 / 0.765",
     "k ref 0.223",
     "0.106 / 0.091",
     "0.103 / 0.065",
     "head angle 82° max / 80° min",
     "20.70 x (cone 4.60, computed)"
    ],
    [
     "round (slotted / Phillips)",
     "#2",
     "56 / 64",
     "0.162 / 0.146",
     "0.069 / 0.059",
     "0.031 / 0.023",
     "0.048 / 0.037",
     "Phillips recess dia M 0.100 / 0.087, depth G 0.053 / 0.017, driver No. 1",
     "4.11 x 1.75"
    ],
    [
     "round (slotted / Phillips)",
     "#3",
     "48 / 56",
     "0.187 / 0.169",
     "0.078 / 0.067",
     "0.035 / 0.027",
     "0.053 / 0.040",
     "Phillips recess dia M 0.109 / 0.096, depth G 0.062 / 0.018, driver No. 1",
     "4.75 x 1.98"
    ],
    [
     "round (slotted / Phillips)",
     "#4",
     "40 / 48",
     "0.211 / 0.193",
     "0.086 / 0.075",
     "0.039 / 0.031",
     "0.058 / 0.044",
     "Phillips recess dia M 0.118 / 0.105, depth G 0.072 / 0.019, driver No. 1",
     "5.36 x 2.18"
    ],
    [
     "round (slotted / Phillips)",
     "#5",
     "40 / 44",
     "0.236 / 0.217",
     "0.095 / 0.083",
     "0.043 / 0.035",
     "0.063 / 0.047",
     "Phillips recess dia M 0.154 / 0.141, depth G 0.074 / 0.027, driver No. 2",
     "5.99 x 2.41"
    ],
    [
     "round (slotted / Phillips)",
     "#6",
     "32 / 40",
     "0.260 / 0.240",
     "0.103 / 0.091",
     "0.048 / 0.039",
     "0.068 / 0.051",
     "Phillips recess dia M 0.162 / 0.149, depth G 0.084 / 0.027, driver No. 2",
     "6.60 x 2.62"
    ],
    [
     "round (slotted / Phillips)",
     "#8",
     "32 / 36",
     "0.309 / 0.287",
     "0.120 / 0.107",
     "0.054 / 0.045",
     "0.077 / 0.058",
     "Phillips recess dia M 0.178 / 0.165, depth G 0.101 / 0.030, driver No. 2",
     "7.85 x 3.05"
    ],
    [
     "round (slotted / Phillips)",
     "#10",
     "24 / 32",
     "0.359 / 0.334",
     "0.137 / 0.123",
     "0.060 / 0.050",
     "0.087 / 0.065",
     "Phillips recess dia M 0.195 / 0.182, depth G 0.119 / 0.031, driver No. 2",
     "9.12 x 3.48"
    ],
    [
     "round (slotted / Phillips)",
     "#12",
     "24 / 28",
     "0.408 / 0.382",
     "0.153 / 0.139",
     "0.067 / 0.056",
     "0.096 / 0.073",
     "Phillips recess dia M 0.249 / 0.236, depth G 0.125 / 0.032, driver No. 3",
     "10.36 x 3.89"
    ],
    [
     "round (slotted / Phillips)",
     "1/4",
     "20 / 28",
     "0.472 / 0.443",
     "0.175 / 0.160",
     "0.075 / 0.064",
     "0.109 / 0.082",
     "Phillips recess dia M 0.268 / 0.255, depth G 0.147 / 0.034, driver No. 3",
     "11.99 x 4.44"
    ],
    [
     "round (slotted / Phillips)",
     "5/16",
     "18 / 24",
     "0.590 / 0.557",
     "0.216 / 0.198",
     "0.084 / 0.072",
     "0.132 / 0.099",
     "Phillips recess dia M 0.308 / 0.295, depth G 0.187 / 0.040, driver No. 3",
     "14.99 x 5.49"
    ],
    [
     "round (slotted / Phillips)",
     "3/8",
     "16 / 24",
     "0.708 / 0.670",
     "0.256 / 0.237",
     "0.094 / 0.081",
     "0.155 / 0.117",
     "Phillips recess dia M 0.387 / 0.374, depth G 0.228 / 0.064, driver No. 4",
     "17.98 x 6.50"
    ],
    [
     "round (slotted / Phillips)",
     "1/2",
     "13 / 20",
     "0.813 / 0.766",
     "0.355 / 0.332",
     "0.106 / 0.091",
     "0.211 / 0.159",
     "Phillips recess dia M 0.416 / 0.403, depth G 0.256 / 0.068, driver No. 4",
     "20.65 x 9.02"
    ],
    [
     "truss (slotted / Phillips)",
     "#2",
     "56 / 64",
     "0.194 / 0.180",
     "0.053 / 0.044",
     "0.031 / 0.023",
     "0.031 / 0.022",
     "Phillips recess dia M ref 0.097, penetration G 0.052 / 0.034, driver No. 1",
     "4.93 x 1.35"
    ],
    [
     "truss (slotted / Phillips)",
     "#3",
     "48 / 56",
     "0.226 / 0.211",
     "0.061 / 0.051",
     "0.035 / 0.027",
     "0.036 / 0.026",
     "Phillips recess dia M ref 0.103, penetration G 0.059 / 0.042, driver No. 1",
     "5.74 x 1.55"
    ],
    [
     "truss (slotted / Phillips)",
     "#4",
     "40 / 48",
     "0.257 / 0.241",
     "0.069 / 0.059",
     "0.039 / 0.031",
     "0.040 / 0.030",
     "Phillips recess dia M ref 0.105, penetration G 0.062 / 0.044, driver No. 1",
     "6.53 x 1.75"
    ],
    [
     "truss (slotted / Phillips)",
     "#5",
     "40 / 44",
     "0.289 / 0.272",
     "0.078 / 0.066",
     "0.043 / 0.035",
     "0.045 / 0.034",
     "Phillips recess dia M ref 0.121, penetration G 0.078 / 0.060, driver No. 1",
     "7.34 x 1.98"
    ],
    [
     "truss (slotted / Phillips)",
     "#6",
     "32 / 40",
     "0.321 / 0.303",
     "0.086 / 0.074",
     "0.048 / 0.039",
     "0.050 / 0.037",
     "Phillips recess dia M ref 0.151, penetration G 0.073 / 0.048, driver No. 2",
     "8.15 x 2.18"
    ],
    [
     "truss (slotted / Phillips)",
     "#8",
     "32 / 36",
     "0.384 / 0.364",
     "0.102 / 0.088",
     "0.054 / 0.045",
     "0.058 / 0.045",
     "Phillips recess dia M ref 0.166, penetration G 0.088 / 0.063, driver No. 2",
     "9.75 x 2.59"
    ],
    [
     "truss (slotted / Phillips)",
     "#10",
     "24 / 32",
     "0.448 / 0.425",
     "0.118 / 0.103",
     "0.060 / 0.050",
     "0.068 / 0.053",
     "Phillips recess dia M ref 0.181, penetration G 0.104 / 0.079, driver No. 2",
     "11.38 x 3.00"
    ],
    [
     "truss (slotted / Phillips)",
     "#12",
     "24 / 28",
     "0.511 / 0.487",
     "0.134 / 0.118",
     "0.067 / 0.056",
     "0.077 / 0.061",
     "Phillips recess dia M ref 0.241, penetration G 0.111 / 0.086, driver No. 3",
     "12.98 x 3.40"
    ],
    [
     "truss (slotted / Phillips)",
     "1/4",
     "20 / 28",
     "0.573 / 0.546",
     "0.150 / 0.133",
     "0.075 / 0.064",
     "0.087 / 0.070",
     "Phillips recess dia M ref 0.256, penetration G 0.126 / 0.101, driver No. 3",
     "14.55 x 3.81"
    ],
    [
     "truss (slotted / Phillips)",
     "5/16",
     "18 / 24",
     "0.698 / 0.666",
     "0.183 / 0.162",
     "0.084 / 0.072",
     "0.106 / 0.085",
     "Phillips recess dia M ref 0.345, penetration G 0.173 / 0.148, driver No. 4",
     "17.73 x 4.65"
    ],
    [
     "truss (slotted / Phillips)",
     "3/8",
     "16 / 24",
     "0.823 / 0.787",
     "0.215 / 0.191",
     "0.094 / 0.081",
     "0.124 / 0.100",
     "Phillips recess dia M ref 0.376, penetration G 0.206 / 0.182, driver No. 4",
     "20.90 x 5.46"
    ],
    [
     "truss (slotted / Phillips)",
     "1/2",
     "13 / 20",
     "1.073 / 1.028",
     "0.280 / 0.250",
     "0.106 / 0.091",
     "0.161 / 0.131",
     "Phillips recess dia M ref 0.437, penetration G 0.268 / 0.243, driver No. 4",
     "27.25 x 7.11"
    ],
    [
     "fillister (slotted) — numbers only",
     "#1",
     "64 / 72",
     "0.118 / 0.104",
     "printed pair 2: 0.053 / 0.045",
     "printed pair 3: 0.066 / 0.058",
     "printed cols 4 and 5: 0.026 / 0.019 ; 0.031 / 0.020",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#2",
     "56 / 64",
     "0.140 / 0.124",
     "printed pair 2: 0.062 / 0.053",
     "printed pair 3: 0.083 / 0.066",
     "printed cols 4 and 5: 0.031 / 0.023 ; 0.037 / 0.025",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#3",
     "48 / 56",
     "0.161 / 0.145",
     "printed pair 2: 0.070 / 0.061",
     "printed pair 3: 0.095 / 0.077",
     "printed cols 4 and 5: 0.035 / 0.027 ; 0.043 / 0.030",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#4",
     "40 / 48",
     "0.183 / 0.166",
     "printed pair 2: 0.079 / 0.069",
     "printed pair 3: 0.107 / 0.088",
     "printed cols 4 and 5: 0.039 / 0.031 ; 0.048 / 0.035",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#5",
     "40 / 44",
     "0.205 / 0.187",
     "printed pair 2: 0.088 / 0.078",
     "printed pair 3: 0.120 / 0.100",
     "printed cols 4 and 5: 0.043 / 0.035 ; 0.054 / 0.040",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#6",
     "32 / 40",
     "0.226 / 0.208",
     "printed pair 2: 0.096 / 0.086",
     "printed pair 3: 0.132 / 0.111",
     "printed cols 4 and 5: 0.048 / 0.039 ; 0.060 / 0.045",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#8",
     "32 / 36",
     "0.270 / 0.250",
     "printed pair 2: 0.113 / 0.102",
     "printed pair 3: 0.156 / 0.133",
     "printed cols 4 and 5: 0.054 / 0.045 ; 0.071 / 0.054",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#10",
     "24 / 32",
     "0.313 / 0.292",
     "printed pair 2: 0.130 / 0.118",
     "printed pair 3: 0.180 / 0.156",
     "printed cols 4 and 5: 0.060 / 0.050 ; 0.083 / 0.064",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "#12",
     "24 / 28",
     "0.357 / 0.334",
     "printed pair 2: 0.148 / 0.134",
     "printed pair 3: 0.205 / 0.178",
     "printed cols 4 and 5: 0.067 / 0.056 ; 0.094 / 0.074",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "1/4",
     "20 / 28",
     "0.414 / 0.389",
     "printed pair 2: 0.170 / 0.155",
     "printed pair 3: 0.237 / 0.207",
     "printed cols 4 and 5: 0.075 / 0.064 ; 0.109 / 0.087",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "5/16",
     "18 / 24",
     "0.518 / 0.490",
     "printed pair 2: 0.211 / 0.194",
     "printed pair 3: 0.295 / 0.262",
     "printed cols 4 and 5: 0.084 / 0.072 ; 0.137 / 0.110",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "3/8",
     "16 / 24",
     "0.622 / 0.590",
     "printed pair 2: 0.253 / 0.233",
     "printed pair 3: 0.355 / 0.315",
     "printed cols 4 and 5: 0.094 / 0.081 ; 0.164 / 0.133",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "7/16",
     "14 / 20",
     "0.625 / 0.589",
     "printed pair 2: 0.265 / 0.242",
     "printed pair 3: 0.368 / 0.321",
     "printed cols 4 and 5: 0.094 / 0.081 ; 0.170 / 0.135",
     "column labels misaligned in both sources (see notes)",
     "—"
    ],
    [
     "fillister (slotted) — numbers only",
     "1/2",
     "13 / 20",
     "0.750 / 0.710",
     "printed pair 2: 0.297 / 0.273",
     "printed pair 3: 0.412 / 0.362",
     "printed cols 4 and 5: 0.106 / 0.091 ; 0.190 / 0.151",
     "column labels misaligned in both sources (see notes)",
     "—"
    ]
   ]
  }
 },
 "sheet_text": "Machine screws, inch (ASME B18.6.3): pan, 82° flat, round, truss, fillister heads #0 to 1/2 — head, slot and recess sizes + envelope models — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/machine-screws-inch-asme-b18-6-3/  (sheet CC BY 4.0)\nBasis: ASME B18.6.3 tables as printed by GlobalFastener (pan T17, 82° flat T1), Engineers Edge (pan, recess), a maker sheet (round, ASME B18.6.3-2002), a maker sheet (truss, 2010) and Westfield / AFT (fillister); thread series from ASME B1.1 as printed by Engineering ToolBox; 54 envelope models as files\nCatalog version: 2026-10-20\n\nOverall (mm): length 32.5, width 25.1, height 32.5\n- Inch dimensions as printed on the ASME B18.6.3 tables: A = head diameter, H or k = head height, J or n = slot width, T or t = slot depth, max / min. Columns after the size are TPI for the coarse (UNC) and fine (UNF) series (#0 exists only as 0-80 UNF), the head dimensions, and 'other' (pan head radius R and Phillips recess diameter and width; round and truss recess diameter M, recess depth G and driver number; flat head angle). The last column is the max head diameter and height converted to mm (computed, x 25.4).\n- Cross-checks: GlobalFastener's ASME B18.6.3-2013 slotted pan table and Engineers Edge's ANSI B18.6.3 pan table agree on head diameter A, head height H, head radius R, slot width J and slot depth T for every size #0 to 3/4 (Engineers Edge does not label max or min, its values equal the max column); AFT's pan table agrees on the head diameter and height maxima (for example #6: 0.270 and 0.082). AFT's 82° flat table (dk .262 / .238 and k .083 for #6) agrees with GlobalFastener's ASME B18.6.3-2013 Table 1. The round table is Tanner Bolt's ASME B18.6.3-2002 sheet and the truss table a single maker sheet (2010 edition); neither was cross-checked against a second source. Older and newer editions differ slightly in places, so check the edition your drawing calls out.\n- Fillister heads: Westfield's UNC table and AFT's fillister table print identical numbers but both have misaligned column headers. The first pair is the head diameter A (max / min, for example #6 0.226 / 0.208) and is shown; the other pairs are shown by print position only ('printed pair 2, 3'), not named, because neither source labels them in a way that can be checked. For that reason no fillister models are drawn. The inch fillister numbers also appear in McMaster-Carr's fillister catalogue page, linked below.\n- The 82° flat head (ASME B18.6.3 Table 1) has a head angle of 82° max and 80° min on every size, and a published head height 'k ref'. Screws at or below a stated length (1/8 in for #0 to #3, 3/16 in for #4 to #6, and so on up to 3/4 in for 1/2) have undercut heads (GlobalFastener note). The model uses the 82° cone from A max to the nominal body diameter; its height is computed from those two numbers and is shorter than the published k ref, which is not used for the geometry.\n- Files are Xem-drawn envelopes at true nominal size: pan = cylinder A max x H max with the published head radius R max on the top edge; round and truss = a spherical cap through A max and H max (the real head has a short cylindrical side that no source gave as a number); flat = the 82° cone. All have the slot J max wide and T min deep, and a plain shank at the nominal diameter. No thread, no Phillips cross (only its diameter and width are published) and no point. Example lengths (0.25 in for #0 to #3, 0.5 in for #4 to #12, 0.75 in for 1/4 to 3/8, 1 in for 7/16 and 1/2) are Xem's choice. Pan: #0 to 1/2 (15), flat: #0 to 1/2 (15), round: #2 to 1/2 (12), truss: #2 to 1/2 (12).\n- Overlap: the older page imperial-machine-screws lists #4-40, #6-32, #8-32 and 1/4-20 (clearance and tap drills, socket head files). Socket head cap screws, inch: socket-head-cap-screws-inch-full. Thread, tap drill and clearance values: thread-reference-tap-drills-clearance.\n\nhead style  size  TPI UNC / UNF  head dia A max / min (in)  head height H max / min (in)  slot width J max / min (in)  slot depth T max / min (in)  other published values (in)  head dia x height, max (mm, computed)\npan (slotted / Phillips)  #0  — / 80  0.116 / 0.104  0.039 / 0.031  0.023 / 0.016  0.022 / 0.014  head radius R max 0.020; Phillips recess dia 0.067, width 0.013 (Engineers Edge)  2.95 x 0.99\npan (slotted / Phillips)  #1  64 / 72  0.142 / 0.130  0.046 / 0.038  0.026 / 0.019  0.027 / 0.018  head radius R max 0.025; Phillips recess dia 0.074, width 0.014 (Engineers Edge)  3.61 x 1.17\npan (slotted / Phillips)  #2  56 / 64  0.167 / 0.155  0.053 / 0.045  0.031 / 0.023  0.031 / 0.022  head radius R max 0.035; Phillips recess dia 0.104, width 0.017 (Engineers Edge)  4.24 x 1.35\npan (slotted / Phillips)  #3  48 / 56  0.193 / 0.180  0.060 / 0.051  0.035 / 0.027  0.036 / 0.026  head radius R max 0.037; Phillips recess dia 0.112, width 0.019 (Engineers Edge)  4.90 x 1.52\npan (slotted / Phillips)  #4  40 / 48  0.219 / 0.205  0.068 / 0.058  0.039 / 0.031  0.040 / 0.030  head radius R max 0.042; Phillips recess dia 0.122, width 0.019 (Engineers Edge)  5.56 x 1.73\npan (slotted / Phillips)  #5  40 / 44  0.245 / 0.231  0.075 / 0.065  0.043 / 0.035  0.045 / 0.034  head radius R max 0.044; Phillips recess dia 0.158, width 0.028 (Engineers Edge)  6.22 x 1.90\npan (slotted / Phillips)  #6  32 / 40  0.270 / 0.256  0.082 / 0.072  0.048 / 0.039  0.050 / 0.037  head radius R max 0.046; Phillips recess dia 0.166, width 0.028 (Engineers Edge)  6.86 x 2.08\npan (slotted / Phillips)  #8  32 / 36  0.322 / 0.306  0.096 / 0.085  0.054 / 0.045  0.058 / 0.045  head radius R max 0.052; Phillips recess dia 0.182, width 0.030 (Engineers Edge)  8.18 x 2.44\npan (slotted / Phillips)  #10  24 / 32  0.373 / 0.357  0.110 / 0.099  0.060 / 0.050  0.068 / 0.053  head radius R max 0.061; Phillips recess dia 0.199, width 0.031 (Engineers Edge)  9.47 x 2.79\npan (slotted / Phillips)  #12  24 / 28  0.425 / 0.407  0.125 / 0.112  0.067 / 0.056  0.077 / 0.061  head radius R max 0.078; Phillips recess dia 0.259, width 0.034 (Engineers Edge)  10.79 x 3.17\npan (slotted / Phillips)  1/4  20 / 28  0.492 / 0.473  0.144 / 0.130  0.075 / 0.064  0.087 / 0.070  head radius R max 0.087; Phillips recess dia 0.281, width 0.036 (Engineers Edge)  12.50 x 3.66\npan (slotted / Phillips)  5/16  18 / 24  0.615 / 0.594  0.178 / 0.162  0.084 / 0.072  0.106 / 0.085  head radius R max 0.099; Phillips recess dia 0.350, width 0.059 (Engineers Edge)  15.62 x 4.52\npan (slotted / Phillips)  3/8  16 / 24  0.740 / 0.716  0.212 / 0.195  0.094 / 0.081  0.124 / 0.100  head radius R max 0.143; Phillips recess dia 0.389, width 0.065 (Engineers Edge)  18.80 x 5.38\npan (slotted / Phillips)  7/16  14 / 20  0.863 / 0.837  0.247 / 0.228  0.094 / 0.081  0.142 / 0.116  head radius R max 0.153; Phillips recess dia 0.413, width 0.068 (Engineers Edge)  21.92 x 6.27\npan (slotted / Phillips)  1/2  13 / 20  0.987 / 0.958  0.281 / 0.260  0.106 / 0.091  0.161 / 0.131  head radius R max 0.175; Phillips recess dia 0.435, width 0.071 (Engineers Edge)  25.07 x 7.14\nflat countersunk 82° (slotted)  #0  — / 80  0.112 / 0.096  k ref 0.035  0.023 / 0.016  0.015 / 0.010  head angle 82° max / 80° min  2.84 x (cone 0.76, computed)\nflat countersunk 82° (slotted)  #1  64 / 72  0.137 / 0.120  k ref 0.043  0.026 / 0.019  0.019 / 0.012  head angle 82° max / 80° min  3.48 x (cone 0.94, computed)\nflat countersunk 82° (slotted)  #2  56 / 64  0.162 / 0.144  k ref 0.051  0.031 / 0.023  0.023 / 0.015  head angle 82° max / 80° min  4.11 x (cone 1.11, computed)\nflat countersunk 82° (slotted)  #3  48 / 56  0.187 / 0.167  k ref 0.059  0.035 / 0.027  0.027 / 0.017  head angle 82° max / 80° min  4.75 x (cone 1.29, computed)\nflat countersunk 82° (slotted)  #4  40 / 48  0.212 / 0.191  k ref 0.067  0.039 / 0.031  0.030 / 0.020  head angle 82° max / 80° min  5.38 x (cone 1.46, computed)\nflat countersunk 82° (slotted)  #5  40 / 44  0.237 / 0.215  k ref 0.075  0.043 / 0.035  0.034 / 0.022  head angle 82° max / 80° min  6.02 x (cone 1.64, computed)\nflat countersunk 82° (slotted)  #6  32 / 40  0.262 / 0.238  k ref 0.083  0.048 / 0.039  0.038 / 0.024  head angle 82° max / 80° min  6.65 x (cone 1.81, computed)\nflat countersunk 82° (slotted)  #8  32 / 36  0.312 / 0.285  k ref 0.100  0.054 / 0.045  0.045 / 0.029  head angle 82° max / 80° min  7.92 x (cone 2.16, computed)\nflat countersunk 82° (slotted)  #10  24 / 32  0.362 / 0.333  k ref 0.116  0.060 / 0.050  0.053 / 0.034  head angle 82° max / 80° min  9.19 x (cone 2.51, computed)\nflat countersunk 82° (slotted)  #12  24 / 28  0.412 / 0.380  k ref 0.132  0.067 / 0.056  0.060 / 0.039  head angle 82° max / 80° min  10.46 x (cone 2.86, computed)\nflat countersunk 82° (slotted)  1/4  20 / 28  0.477 / 0.442  k ref 0.153  0.075 / 0.064  0.070 / 0.046  head angle 82° max / 80° min  12.12 x (cone 3.32, computed)\nflat countersunk 82° (slotted)  5/16  18 / 24  0.597 / 0.556  k ref 0.191  0.084 / 0.072  0.088 / 0.058  head angle 82° max / 80° min  15.16 x (cone 4.16, computed)\nflat countersunk 82° (slotted)  3/8  16 / 24  0.717 / 0.670  k ref 0.230  0.094 / 0.081  0.106 / 0.070  head angle 82° max / 80° min  18.21 x (cone 5.00, computed)\nflat countersunk 82° (slotted)  7/16  14 / 20  0.760 / 0.715  k ref 0.223  0.094 / 0.081  0.103 / 0.066  head angle 82° max / 80° min  19.30 x (cone 4.71, computed)\nflat countersunk 82° (slotted)  1/2  13 / 20  0.815 / 0.765  k ref 0.223  0.106 / 0.091  0.103 / 0.065  head angle 82° max / 80° min  20.70 x (cone 4.60, computed)\nround (slotted / Phillips)  #2  56 / 64  0.162 / 0.146  0.069 / 0.059  0.031 / 0.023  0.048 / 0.037  Phillips recess dia M 0.100 / 0.087, depth G 0.053 / 0.017, driver No. 1  4.11 x 1.75\nround (slotted / Phillips)  #3  48 / 56  0.187 / 0.169  0.078 / 0.067  0.035 / 0.027  0.053 / 0.040  Phillips recess dia M 0.109 / 0.096, depth G 0.062 / 0.018, driver No. 1  4.75 x 1.98\nround (slotted / Phillips)  #4  40 / 48  0.211 / 0.193  0.086 / 0.075  0.039 / 0.031  0.058 / 0.044  Phillips recess dia M 0.118 / 0.105, depth G 0.072 / 0.019, driver No. 1  5.36 x 2.18\nround (slotted / Phillips)  #5  40 / 44  0.236 / 0.217  0.095 / 0.083  0.043 / 0.035  0.063 / 0.047  Phillips recess dia M 0.154 / 0.141, depth G 0.074 / 0.027, driver No. 2  5.99 x 2.41\nround (slotted / Phillips)  #6  32 / 40  0.260 / 0.240  0.103 / 0.091  0.048 / 0.039  0.068 / 0.051  Phillips recess dia M 0.162 / 0.149, depth G 0.084 / 0.027, driver No. 2  6.60 x 2.62\nround (slotted / Phillips)  #8  32 / 36  0.309 / 0.287  0.120 / 0.107  0.054 / 0.045  0.077 / 0.058  Phillips recess dia M 0.178 / 0.165, depth G 0.101 / 0.030, driver No. 2  7.85 x 3.05\nround (slotted / Phillips)  #10  24 / 32  0.359 / 0.334  0.137 / 0.123  0.060 / 0.050  0.087 / 0.065  Phillips recess dia M 0.195 / 0.182, depth G 0.119 / 0.031, driver No. 2  9.12 x 3.48\nround (slotted / Phillips)  #12  24 / 28  0.408 / 0.382  0.153 / 0.139  0.067 / 0.056  0.096 / 0.073  Phillips recess dia M 0.249 / 0.236, depth G 0.125 / 0.032, driver No. 3  10.36 x 3.89\nround (slotted / Phillips)  1/4  20 / 28  0.472 / 0.443  0.175 / 0.160  0.075 / 0.064  0.109 / 0.082  Phillips recess dia M 0.268 / 0.255, depth G 0.147 / 0.034, driver No. 3  11.99 x 4.44\nround (slotted / Phillips)  5/16  18 / 24  0.590 / 0.557  0.216 / 0.198  0.084 / 0.072  0.132 / 0.099  Phillips recess dia M 0.308 / 0.295, depth G 0.187 / 0.040, driver No. 3  14.99 x 5.49\nround (slotted / Phillips)  3/8  16 / 24  0.708 / 0.670  0.256 / 0.237  0.094 / 0.081  0.155 / 0.117  Phillips recess dia M 0.387 / 0.374, depth G 0.228 / 0.064, driver No. 4  17.98 x 6.50\nround (slotted / Phillips)  1/2  13 / 20  0.813 / 0.766  0.355 / 0.332  0.106 / 0.091  0.211 / 0.159  Phillips recess dia M 0.416 / 0.403, depth G 0.256 / 0.068, driver No. 4  20.65 x 9.02\ntruss (slotted / Phillips)  #2  56 / 64  0.194 / 0.180  0.053 / 0.044  0.031 / 0.023  0.031 / 0.022  Phillips recess dia M ref 0.097, penetration G 0.052 / 0.034, driver No. 1  4.93 x 1.35\ntruss (slotted / Phillips)  #3  48 / 56  0.226 / 0.211  0.061 / 0.051  0.035 / 0.027  0.036 / 0.026  Phillips recess dia M ref 0.103, penetration G 0.059 / 0.042, driver No. 1  5.74 x 1.55\ntruss (slotted / Phillips)  #4  40 / 48  0.257 / 0.241  0.069 / 0.059  0.039 / 0.031  0.040 / 0.030  Phillips recess dia M ref 0.105, penetration G 0.062 / 0.044, driver No. 1  6.53 x 1.75\ntruss (slotted / Phillips)  #5  40 / 44  0.289 / 0.272  0.078 / 0.066  0.043 / 0.035  0.045 / 0.034  Phillips recess dia M ref 0.121, penetration G 0.078 / 0.060, driver No. 1  7.34 x 1.98\ntruss (slotted / Phillips)  #6  32 / 40  0.321 / 0.303  0.086 / 0.074  0.048 / 0.039  0.050 / 0.037  Phillips recess dia M ref 0.151, penetration G 0.073 / 0.048, driver No. 2  8.15 x 2.18\ntruss (slotted / Phillips)  #8  32 / 36  0.384 / 0.364  0.102 / 0.088  0.054 / 0.045  0.058 / 0.045  Phillips recess dia M ref 0.166, penetration G 0.088 / 0.063, driver No. 2  9.75 x 2.59\ntruss (slotted / Phillips)  #10  24 / 32  0.448 / 0.425  0.118 / 0.103  0.060 / 0.050  0.068 / 0.053  Phillips recess dia M ref 0.181, penetration G 0.104 / 0.079, driver No. 2  11.38 x 3.00\ntruss (slotted / Phillips)  #12  24 / 28  0.511 / 0.487  0.134 / 0.118  0.067 / 0.056  0.077 / 0.061  Phillips recess dia M ref 0.241, penetration G 0.111 / 0.086, driver No. 3  12.98 x 3.40\ntruss (slotted / Phillips)  1/4  20 / 28  0.573 / 0.546  0.150 / 0.133  0.075 / 0.064  0.087 / 0.070  Phillips recess dia M ref 0.256, penetration G 0.126 / 0.101, driver No. 3  14.55 x 3.81\ntruss (slotted / Phillips)  5/16  18 / 24  0.698 / 0.666  0.183 / 0.162  0.084 / 0.072  0.106 / 0.085  Phillips recess dia M ref 0.345, penetration G 0.173 / 0.148, driver No. 4  17.73 x 4.65\ntruss (slotted / Phillips)  3/8  16 / 24  0.823 / 0.787  0.215 / 0.191  0.094 / 0.081  0.124 / 0.100  Phillips recess dia M ref 0.376, penetration G 0.206 / 0.182, driver No. 4  20.90 x 5.46\ntruss (slotted / Phillips)  1/2  13 / 20  1.073 / 1.028  0.280 / 0.250  0.106 / 0.091  0.161 / 0.131  Phillips recess dia M ref 0.437, penetration G 0.268 / 0.243, driver No. 4  27.25 x 7.11\nfillister (slotted) — numbers only  #1  64 / 72  0.118 / 0.104  printed pair 2: 0.053 / 0.045  printed pair 3: 0.066 / 0.058  printed cols 4 and 5: 0.026 / 0.019 ; 0.031 / 0.020  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #2  56 / 64  0.140 / 0.124  printed pair 2: 0.062 / 0.053  printed pair 3: 0.083 / 0.066  printed cols 4 and 5: 0.031 / 0.023 ; 0.037 / 0.025  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #3  48 / 56  0.161 / 0.145  printed pair 2: 0.070 / 0.061  printed pair 3: 0.095 / 0.077  printed cols 4 and 5: 0.035 / 0.027 ; 0.043 / 0.030  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #4  40 / 48  0.183 / 0.166  printed pair 2: 0.079 / 0.069  printed pair 3: 0.107 / 0.088  printed cols 4 and 5: 0.039 / 0.031 ; 0.048 / 0.035  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #5  40 / 44  0.205 / 0.187  printed pair 2: 0.088 / 0.078  printed pair 3: 0.120 / 0.100  printed cols 4 and 5: 0.043 / 0.035 ; 0.054 / 0.040  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #6  32 / 40  0.226 / 0.208  printed pair 2: 0.096 / 0.086  printed pair 3: 0.132 / 0.111  printed cols 4 and 5: 0.048 / 0.039 ; 0.060 / 0.045  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #8  32 / 36  0.270 / 0.250  printed pair 2: 0.113 / 0.102  printed pair 3: 0.156 / 0.133  printed cols 4 and 5: 0.054 / 0.045 ; 0.071 / 0.054  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #10  24 / 32  0.313 / 0.292  printed pair 2: 0.130 / 0.118  printed pair 3: 0.180 / 0.156  printed cols 4 and 5: 0.060 / 0.050 ; 0.083 / 0.064  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  #12  24 / 28  0.357 / 0.334  printed pair 2: 0.148 / 0.134  printed pair 3: 0.205 / 0.178  printed cols 4 and 5: 0.067 / 0.056 ; 0.094 / 0.074  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  1/4  20 / 28  0.414 / 0.389  printed pair 2: 0.170 / 0.155  printed pair 3: 0.237 / 0.207  printed cols 4 and 5: 0.075 / 0.064 ; 0.109 / 0.087  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  5/16  18 / 24  0.518 / 0.490  printed pair 2: 0.211 / 0.194  printed pair 3: 0.295 / 0.262  printed cols 4 and 5: 0.084 / 0.072 ; 0.137 / 0.110  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  3/8  16 / 24  0.622 / 0.590  printed pair 2: 0.253 / 0.233  printed pair 3: 0.355 / 0.315  printed cols 4 and 5: 0.094 / 0.081 ; 0.164 / 0.133  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  7/16  14 / 20  0.625 / 0.589  printed pair 2: 0.265 / 0.242  printed pair 3: 0.368 / 0.321  printed cols 4 and 5: 0.094 / 0.081 ; 0.170 / 0.135  column labels misaligned in both sources (see notes)  —\nfillister (slotted) — numbers only  1/2  13 / 20  0.750 / 0.710  printed pair 2: 0.297 / 0.273  printed pair 3: 0.412 / 0.362  printed cols 4 and 5: 0.106 / 0.091 ; 0.190 / 0.151  column labels misaligned in both sources (see notes)  —\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- GlobalFastener (standards database): ASME B 18.6.3 (T17) - 2013 slotted pan head screws, Table 17: d, P, dk max / min, k max / min, n, t, R max — web — Publisher's page; dimensions are facts — https://www.globalfastener.com/standards/detail_4988.html\n- Engineers Edge: ANSI B18.6.3 slotted pan head machine screws: head diameter A, head height H, head radius R, slot width J, slot depth T, #0000 to 3/4 — web — Publisher's page; dimensions are facts — https://ns1.engineersedge.com/pan_head1.htm\n- Engineers Edge: Cross-recessed head data page (titled fillister; its head diameter, height and radius equal the pan head table): recess diameter and recess width, #0 to 3/4 — web — Publisher's page; dimensions are facts — https://ns2.engineersedge.com/phillips_pan_head.htm\n- AFT Fasteners: Pan head machine screws, slotted and Phillips: head diameter and height by size (cross-check; the page's column headers are not labelled) — web — Publisher's page; dimensions are facts — https://www.aftfasteners.com/pan-head-machine-screws-dimensions-specifications/\n- GlobalFastener (standards database): ASME B 18.6.3 (T1) - 2013 82-degree slotted flat countersunk head machine screws, Table 1: d, P, dk max / min, k ref, n, t, head angle 82 / 80 degrees — web — Publisher's page; dimensions are facts — https://www.globalfastener.com/standards/detail_4972.html\n- AFT Fasteners: 82 degree flat head machine screws dimensions (cross-check of dk max / min, k ref, n, t; headers not labelled) — web — Publisher's page; dimensions are facts — https://www.aftfasteners.com/82-degree-flat-head-machine-screws-dimensions-specifications/\n- Tanner Bolt (maker sheet): Round heads for machine screws (ASME B18.6.3-2002): A, H, J, T, M, G by size 2 to 1/2 — web — Publisher's page; dimensions are facts — https://www.tannerbolt.com/media/akeneo_connector/Machineroundmpbhds.pdf\n- Cold-forged fastener maker sheet (hosted on a Shopify CDN, maker not named in the text read): Truss heads for machine screws (ASME B18.6.3-2010): A, H, J, T, M, G by size 2 to 1/2 — web — Publisher's page; dimensions are facts — https://cdn2.shopify.com/s/files/1/0056/7856/3437/files/Machinebindtrusshds.pdf\n- Westfield Fasteners: ASME B18.6.3 UNC slotted fillister head machine screws, 1-64 to 3/4-10 (column headers misaligned on the page; values read by position) — web — Publisher's page; dimensions are facts — https://www.westfieldfasteners.co.uk/Standards/ScrewBolt-SlotFillister-UNCoarse.html\n- AFT Fasteners: Fillister head machine screws, slotted and Phillips (ASME B18.6.3-2013): same figures as Westfield, headers garbled — web — Publisher's page; dimensions are facts — https://www.aftfasteners.com/fillister-head-machine-screws-specifications-dimensions/\n- Engineering ToolBox: ANSI/ASME B1.1 Unified National threads, UNC and UNF: TPI, major diameter in / mm, tap drill mm, pitch mm, #0 to 4 in — web — Publisher's page; dimensions are facts — https://www.engineeringtoolbox.com/unified-screw-threads-unc-unf-d_1809.html\n- McMaster-Carr: Machine screws (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/screws/machine-screws/\n- McMaster-Carr: Fillister head machine screws (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/fillister-head-machine-screws\n- McMaster-Carr: Binding head machine screws (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/binding-head-machine-screws\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 54 parts): https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/index.json\nAPI: https://xemstudio.com/api/geometry?object=machine-screws-inch-asme-b18-6-3\n",
 "sources": [
  {
   "publisher": "GlobalFastener (standards database)",
   "title": "ASME B 18.6.3 (T17) - 2013 slotted pan head screws, Table 17: d, P, dk max / min, k max / min, n, t, R max",
   "url": "https://www.globalfastener.com/standards/detail_4988.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Engineers Edge",
   "title": "ANSI B18.6.3 slotted pan head machine screws: head diameter A, head height H, head radius R, slot width J, slot depth T, #0000 to 3/4",
   "url": "https://ns1.engineersedge.com/pan_head1.htm",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Engineers Edge",
   "title": "Cross-recessed head data page (titled fillister; its head diameter, height and radius equal the pan head table): recess diameter and recess width, #0 to 3/4",
   "url": "https://ns2.engineersedge.com/phillips_pan_head.htm",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "AFT Fasteners",
   "title": "Pan head machine screws, slotted and Phillips: head diameter and height by size (cross-check; the page's column headers are not labelled)",
   "url": "https://www.aftfasteners.com/pan-head-machine-screws-dimensions-specifications/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "GlobalFastener (standards database)",
   "title": "ASME B 18.6.3 (T1) - 2013 82-degree slotted flat countersunk head machine screws, Table 1: d, P, dk max / min, k ref, n, t, head angle 82 / 80 degrees",
   "url": "https://www.globalfastener.com/standards/detail_4972.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "AFT Fasteners",
   "title": "82 degree flat head machine screws dimensions (cross-check of dk max / min, k ref, n, t; headers not labelled)",
   "url": "https://www.aftfasteners.com/82-degree-flat-head-machine-screws-dimensions-specifications/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Tanner Bolt (maker sheet)",
   "title": "Round heads for machine screws (ASME B18.6.3-2002): A, H, J, T, M, G by size 2 to 1/2",
   "url": "https://www.tannerbolt.com/media/akeneo_connector/Machineroundmpbhds.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Cold-forged fastener maker sheet (hosted on a Shopify CDN, maker not named in the text read)",
   "title": "Truss heads for machine screws (ASME B18.6.3-2010): A, H, J, T, M, G by size 2 to 1/2",
   "url": "https://cdn2.shopify.com/s/files/1/0056/7856/3437/files/Machinebindtrusshds.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Westfield Fasteners",
   "title": "ASME B18.6.3 UNC slotted fillister head machine screws, 1-64 to 3/4-10 (column headers misaligned on the page; values read by position)",
   "url": "https://www.westfieldfasteners.co.uk/Standards/ScrewBolt-SlotFillister-UNCoarse.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "AFT Fasteners",
   "title": "Fillister head machine screws, slotted and Phillips (ASME B18.6.3-2013): same figures as Westfield, headers garbled",
   "url": "https://www.aftfasteners.com/fillister-head-machine-screws-specifications-dimensions/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Engineering ToolBox",
   "title": "ANSI/ASME B1.1 Unified National threads, UNC and UNF: TPI, major diameter in / mm, tap drill mm, pitch mm, #0 to 4 in",
   "url": "https://www.engineeringtoolbox.com/unified-screw-threads-unc-unf-d_1809.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Machine screws (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/screws/machine-screws/",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Fillister head machine screws (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/fillister-head-machine-screws",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Binding head machine screws (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/binding-head-machine-screws",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "imperial-machine-screws",
  "socket-head-cap-screws-inch-full",
  "flat-head-socket-cap-screws-inch",
  "thread-reference-tap-drills-clearance",
  "machine-screws-metric-pan-cheese-csk",
  "wood-screws-flat-head-inch",
  "hex-nuts-inch",
  "flat-washers-inch"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no tolerance added)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/",
 "mating": [
  {
   "feature": "shank (thread as plain cylinder)",
   "exact": "major diameter per size: #0 Ø1.524 ... #6 Ø3.505 ... 1/4 Ø6.350 ... 1/2 Ø12.700 mm (nominal)",
   "mates": "tapped hole at the tap drill, or clearance hole (close / normal / loose), see thread-reference-tap-drills-clearance",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "pan head",
   "exact": "head Ø A max × height H max per size: #6 0.270 × 0.082 in (6.86 × 2.08 mm), #10 0.373 × 0.110, 1/4 0.492 × 0.144 in",
   "mates": "round counterbore that seats the head: Ø = A max + your process clearance, depth = H max",
   "fit": "slide",
   "files": "pan-"
  },
  {
   "feature": "flat head (82° cone)",
   "exact": "A max per size: #6 0.262 in (6.65 mm), #10 0.362 in, 1/4 0.477 in; 82° included angle",
   "mates": "82° countersink, Ø at the surface = A max + your process clearance",
   "fit": "slide",
   "files": "flat82-"
  },
  {
   "feature": "round / truss head",
   "exact": "A max × H max per size: #6 round 0.260 × 0.103 in, #6 truss 0.321 × 0.086 in",
   "mates": "round counterbore: Ø = A max + your process clearance, depth = H max",
   "fit": "slide",
   "files": "round-"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. ISO 286 equivalent: H7/p6 (locational interference) or tighter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. ISO 286 equivalent: H7/g6 or H7/h6.",
  "run": "turns or slides in use: pin in a link, rod through a guide. ISO 286 equivalent: H8/f7 (close running).",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. ISO 286 equivalent: H9/d9 (free running) or looser.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "What is the head diameter of a #6-32 pan head machine screw?",
   "a": "0.270 in max and 0.256 in min (6.86 mm max), head height 0.082 in max / 0.072 in min, slot 0.048 in wide (max) and 0.037 in deep (min); GlobalFastener's ASME B18.6.3-2013 table and Engineers Edge agree."
  },
  {
   "q": "What is the head of a #10-24 82° flat head machine screw?",
   "a": "Head diameter 0.362 in max / 0.333 in min (9.19 mm), head angle 82° (80° min), slot 0.060 in wide max and 0.034 in deep min (ASME B18.6.3 Table 1 as printed by GlobalFastener)."
  },
  {
   "q": "What is the difference between a pan head and a round head machine screw?",
   "a": "In ASME B18.6.3 the pan head is the lower, flatter head with a head radius R (a #6 is 0.270 in across and 0.082 in high), the round head is the domed one (a #6 is 0.260 in across and 0.103 in high max)."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "pan-no0-80x6.35mm",
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   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no0-80x6.35mm.stl",
   "note": "#0 pan head machine screw envelope: head Ø2.95 (A max 0.116 in) x 0.99 mm (H max 0.039 in), top edge radius R max 0.020 in, slot 0.023 in wide (J max) x 0.014 in deep (T min), plain Ø1.524 mm shank, example length under the head 0.25 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
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   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no1-64x6.35mm.stl",
   "note": "#1 pan head machine screw envelope: head Ø3.61 (A max 0.142 in) x 1.17 mm (H max 0.046 in), top edge radius R max 0.025 in, slot 0.026 in wide (J max) x 0.018 in deep (T min), plain Ø1.854 mm shank, example length under the head 0.25 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-no2-56x6.35mm",
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   "note": "#2 pan head machine screw envelope: head Ø4.24 (A max 0.167 in) x 1.35 mm (H max 0.053 in), top edge radius R max 0.035 in, slot 0.031 in wide (J max) x 0.022 in deep (T min), plain Ø2.184 mm shank, example length under the head 0.25 in (Xem's choice); no thread, Phillips cross or point"
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  {
   "file": "pan-no3-48x6.35mm",
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   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no3-48x6.35mm.stl",
   "note": "#3 pan head machine screw envelope: head Ø4.90 (A max 0.193 in) x 1.52 mm (H max 0.060 in), top edge radius R max 0.037 in, slot 0.035 in wide (J max) x 0.026 in deep (T min), plain Ø2.515 mm shank, example length under the head 0.25 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-no4-40x12.7mm",
   "formats": [
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   ],
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no4-40x12.7mm.stl",
   "note": "#4 pan head machine screw envelope: head Ø5.56 (A max 0.219 in) x 1.73 mm (H max 0.068 in), top edge radius R max 0.042 in, slot 0.039 in wide (J max) x 0.030 in deep (T min), plain Ø2.845 mm shank, example length under the head 0.5 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-no5-40x12.7mm",
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no5-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no5-40x12.7mm.stl",
   "note": "#5 pan head machine screw envelope: head Ø6.22 (A max 0.245 in) x 1.90 mm (H max 0.075 in), top edge radius R max 0.044 in, slot 0.043 in wide (J max) x 0.034 in deep (T min), plain Ø3.175 mm shank, example length under the head 0.5 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-no6-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no6-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no6-32x12.7mm.stl",
   "note": "#6 pan head machine screw envelope: head Ø6.86 (A max 0.270 in) x 2.08 mm (H max 0.082 in), top edge radius R max 0.046 in, slot 0.048 in wide (J max) x 0.037 in deep (T min), plain Ø3.505 mm shank, example length under the head 0.5 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-no8-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no8-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no8-32x12.7mm.stl",
   "note": "#8 pan head machine screw envelope: head Ø8.18 (A max 0.322 in) x 2.44 mm (H max 0.096 in), top edge radius R max 0.052 in, slot 0.054 in wide (J max) x 0.045 in deep (T min), plain Ø4.166 mm shank, example length under the head 0.5 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-no10-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no10-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no10-24x12.7mm.stl",
   "note": "#10 pan head machine screw envelope: head Ø9.47 (A max 0.373 in) x 2.79 mm (H max 0.110 in), top edge radius R max 0.061 in, slot 0.060 in wide (J max) x 0.053 in deep (T min), plain Ø4.826 mm shank, example length under the head 0.5 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-no12-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no12-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-no12-24x12.7mm.stl",
   "note": "#12 pan head machine screw envelope: head Ø10.79 (A max 0.425 in) x 3.17 mm (H max 0.125 in), top edge radius R max 0.078 in, slot 0.067 in wide (J max) x 0.061 in deep (T min), plain Ø5.486 mm shank, example length under the head 0.5 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-1-4-20x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-1-4-20x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-1-4-20x19.05mm.stl",
   "note": "1/4 pan head machine screw envelope: head Ø12.50 (A max 0.492 in) x 3.66 mm (H max 0.144 in), top edge radius R max 0.087 in, slot 0.075 in wide (J max) x 0.070 in deep (T min), plain Ø6.350 mm shank, example length under the head 0.75 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-5-16-18x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-5-16-18x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-5-16-18x19.05mm.stl",
   "note": "5/16 pan head machine screw envelope: head Ø15.62 (A max 0.615 in) x 4.52 mm (H max 0.178 in), top edge radius R max 0.099 in, slot 0.084 in wide (J max) x 0.085 in deep (T min), plain Ø7.938 mm shank, example length under the head 0.75 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-3-8-16x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-3-8-16x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-3-8-16x19.05mm.stl",
   "note": "3/8 pan head machine screw envelope: head Ø18.80 (A max 0.740 in) x 5.38 mm (H max 0.212 in), top edge radius R max 0.143 in, slot 0.094 in wide (J max) x 0.100 in deep (T min), plain Ø9.525 mm shank, example length under the head 0.75 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-7-16-14x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-7-16-14x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-7-16-14x25.4mm.stl",
   "note": "7/16 pan head machine screw envelope: head Ø21.92 (A max 0.863 in) x 6.27 mm (H max 0.247 in), top edge radius R max 0.153 in, slot 0.094 in wide (J max) x 0.116 in deep (T min), plain Ø11.112 mm shank, example length under the head 1.0 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "pan-1-2-13x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-1-2-13x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/pan-1-2-13x25.4mm.stl",
   "note": "1/2 pan head machine screw envelope: head Ø25.07 (A max 0.987 in) x 7.14 mm (H max 0.281 in), top edge radius R max 0.175 in, slot 0.106 in wide (J max) x 0.131 in deep (T min), plain Ø12.700 mm shank, example length under the head 1.0 in (Xem's choice); no thread, Phillips cross or point"
  },
  {
   "file": "flat82-no0-80x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no0-80x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no0-80x6.35mm.stl",
   "note": "#0 82° flat head machine screw envelope: cone from Ø2.84 mm (A max 0.112 in) at the 82° included angle down to the Ø1.524 mm nominal body (cone height 0.76 mm, computed), slot 0.023 in x 0.010 in deep, overall length head top to tip 0.25 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no1-64x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no1-64x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no1-64x6.35mm.stl",
   "note": "#1 82° flat head machine screw envelope: cone from Ø3.48 mm (A max 0.137 in) at the 82° included angle down to the Ø1.854 mm nominal body (cone height 0.94 mm, computed), slot 0.026 in x 0.012 in deep, overall length head top to tip 0.25 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no2-56x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no2-56x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no2-56x6.35mm.stl",
   "note": "#2 82° flat head machine screw envelope: cone from Ø4.11 mm (A max 0.162 in) at the 82° included angle down to the Ø2.184 mm nominal body (cone height 1.11 mm, computed), slot 0.031 in x 0.015 in deep, overall length head top to tip 0.25 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no3-48x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no3-48x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no3-48x6.35mm.stl",
   "note": "#3 82° flat head machine screw envelope: cone from Ø4.75 mm (A max 0.187 in) at the 82° included angle down to the Ø2.515 mm nominal body (cone height 1.29 mm, computed), slot 0.035 in x 0.017 in deep, overall length head top to tip 0.25 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no4-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no4-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no4-40x12.7mm.stl",
   "note": "#4 82° flat head machine screw envelope: cone from Ø5.38 mm (A max 0.212 in) at the 82° included angle down to the Ø2.845 mm nominal body (cone height 1.46 mm, computed), slot 0.039 in x 0.020 in deep, overall length head top to tip 0.5 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no5-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no5-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no5-40x12.7mm.stl",
   "note": "#5 82° flat head machine screw envelope: cone from Ø6.02 mm (A max 0.237 in) at the 82° included angle down to the Ø3.175 mm nominal body (cone height 1.64 mm, computed), slot 0.043 in x 0.022 in deep, overall length head top to tip 0.5 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no6-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no6-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no6-32x12.7mm.stl",
   "note": "#6 82° flat head machine screw envelope: cone from Ø6.65 mm (A max 0.262 in) at the 82° included angle down to the Ø3.505 mm nominal body (cone height 1.81 mm, computed), slot 0.048 in x 0.024 in deep, overall length head top to tip 0.5 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no8-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no8-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no8-32x12.7mm.stl",
   "note": "#8 82° flat head machine screw envelope: cone from Ø7.92 mm (A max 0.312 in) at the 82° included angle down to the Ø4.166 mm nominal body (cone height 2.16 mm, computed), slot 0.054 in x 0.029 in deep, overall length head top to tip 0.5 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no10-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no10-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no10-24x12.7mm.stl",
   "note": "#10 82° flat head machine screw envelope: cone from Ø9.19 mm (A max 0.362 in) at the 82° included angle down to the Ø4.826 mm nominal body (cone height 2.51 mm, computed), slot 0.060 in x 0.034 in deep, overall length head top to tip 0.5 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-no12-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no12-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-no12-24x12.7mm.stl",
   "note": "#12 82° flat head machine screw envelope: cone from Ø10.46 mm (A max 0.412 in) at the 82° included angle down to the Ø5.486 mm nominal body (cone height 2.86 mm, computed), slot 0.067 in x 0.039 in deep, overall length head top to tip 0.5 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-1-4-20x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-1-4-20x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-1-4-20x19.05mm.stl",
   "note": "1/4 82° flat head machine screw envelope: cone from Ø12.12 mm (A max 0.477 in) at the 82° included angle down to the Ø6.350 mm nominal body (cone height 3.32 mm, computed), slot 0.075 in x 0.046 in deep, overall length head top to tip 0.75 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-5-16-18x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-5-16-18x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-5-16-18x19.05mm.stl",
   "note": "5/16 82° flat head machine screw envelope: cone from Ø15.16 mm (A max 0.597 in) at the 82° included angle down to the Ø7.938 mm nominal body (cone height 4.16 mm, computed), slot 0.084 in x 0.058 in deep, overall length head top to tip 0.75 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-3-8-16x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-3-8-16x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-3-8-16x19.05mm.stl",
   "note": "3/8 82° flat head machine screw envelope: cone from Ø18.21 mm (A max 0.717 in) at the 82° included angle down to the Ø9.525 mm nominal body (cone height 5.00 mm, computed), slot 0.094 in x 0.070 in deep, overall length head top to tip 0.75 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-7-16-14x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-7-16-14x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-7-16-14x25.4mm.stl",
   "note": "7/16 82° flat head machine screw envelope: cone from Ø19.30 mm (A max 0.760 in) at the 82° included angle down to the Ø11.112 mm nominal body (cone height 4.71 mm, computed), slot 0.094 in x 0.066 in deep, overall length head top to tip 1.0 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "flat82-1-2-13x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-1-2-13x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/flat82-1-2-13x25.4mm.stl",
   "note": "1/2 82° flat head machine screw envelope: cone from Ø20.70 mm (A max 0.815 in) at the 82° included angle down to the Ø12.700 mm nominal body (cone height 4.60 mm, computed), slot 0.106 in x 0.065 in deep, overall length head top to tip 1.0 in (Xem's choice); no thread, recess cross or point"
  },
  {
   "file": "round-no2-56x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no2-56x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no2-56x6.35mm.stl",
   "note": "#2 round head machine screw envelope: spherical cap through Ø4.11 mm (A max 0.162 in) and 1.75 mm high (H max 0.069 in), slot 0.031 in x 0.037 in deep, plain Ø2.184 mm shank, example length 0.25 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-no3-48x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no3-48x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no3-48x6.35mm.stl",
   "note": "#3 round head machine screw envelope: spherical cap through Ø4.75 mm (A max 0.187 in) and 1.98 mm high (H max 0.078 in), slot 0.035 in x 0.040 in deep, plain Ø2.515 mm shank, example length 0.25 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-no4-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no4-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no4-40x12.7mm.stl",
   "note": "#4 round head machine screw envelope: spherical cap through Ø5.36 mm (A max 0.211 in) and 2.18 mm high (H max 0.086 in), slot 0.039 in x 0.044 in deep, plain Ø2.845 mm shank, example length 0.5 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-no5-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no5-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no5-40x12.7mm.stl",
   "note": "#5 round head machine screw envelope: spherical cap through Ø5.99 mm (A max 0.236 in) and 2.41 mm high (H max 0.095 in), slot 0.043 in x 0.047 in deep, plain Ø3.175 mm shank, example length 0.5 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-no6-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no6-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no6-32x12.7mm.stl",
   "note": "#6 round head machine screw envelope: spherical cap through Ø6.60 mm (A max 0.260 in) and 2.62 mm high (H max 0.103 in), slot 0.048 in x 0.051 in deep, plain Ø3.505 mm shank, example length 0.5 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-no8-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no8-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no8-32x12.7mm.stl",
   "note": "#8 round head machine screw envelope: spherical cap through Ø7.85 mm (A max 0.309 in) and 3.05 mm high (H max 0.120 in), slot 0.054 in x 0.058 in deep, plain Ø4.166 mm shank, example length 0.5 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-no10-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no10-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no10-24x12.7mm.stl",
   "note": "#10 round head machine screw envelope: spherical cap through Ø9.12 mm (A max 0.359 in) and 3.48 mm high (H max 0.137 in), slot 0.060 in x 0.065 in deep, plain Ø4.826 mm shank, example length 0.5 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-no12-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no12-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-no12-24x12.7mm.stl",
   "note": "#12 round head machine screw envelope: spherical cap through Ø10.36 mm (A max 0.408 in) and 3.89 mm high (H max 0.153 in), slot 0.067 in x 0.073 in deep, plain Ø5.486 mm shank, example length 0.5 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-1-4-20x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-1-4-20x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-1-4-20x19.05mm.stl",
   "note": "1/4 round head machine screw envelope: spherical cap through Ø11.99 mm (A max 0.472 in) and 4.44 mm high (H max 0.175 in), slot 0.075 in x 0.082 in deep, plain Ø6.350 mm shank, example length 0.75 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-5-16-18x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-5-16-18x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-5-16-18x19.05mm.stl",
   "note": "5/16 round head machine screw envelope: spherical cap through Ø14.99 mm (A max 0.590 in) and 5.49 mm high (H max 0.216 in), slot 0.084 in x 0.099 in deep, plain Ø7.938 mm shank, example length 0.75 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-3-8-16x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-3-8-16x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-3-8-16x19.05mm.stl",
   "note": "3/8 round head machine screw envelope: spherical cap through Ø17.98 mm (A max 0.708 in) and 6.50 mm high (H max 0.256 in), slot 0.094 in x 0.117 in deep, plain Ø9.525 mm shank, example length 0.75 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "round-1-2-13x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-1-2-13x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/round-1-2-13x25.4mm.stl",
   "note": "1/2 round head machine screw envelope: spherical cap through Ø20.65 mm (A max 0.813 in) and 9.02 mm high (H max 0.355 in), slot 0.106 in x 0.159 in deep, plain Ø12.700 mm shank, example length 1.0 in (Xem's choice); the real head has a short side wall, not drawn"
  },
  {
   "file": "truss-no2-56x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no2-56x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no2-56x6.35mm.stl",
   "note": "#2 truss head machine screw envelope: shallow spherical cap through Ø4.93 mm (A max 0.194 in) and 1.35 mm high (H max 0.053 in), slot 0.031 in x 0.022 in deep, plain Ø2.184 mm shank, example length 0.25 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-no3-48x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no3-48x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no3-48x6.35mm.stl",
   "note": "#3 truss head machine screw envelope: shallow spherical cap through Ø5.74 mm (A max 0.226 in) and 1.55 mm high (H max 0.061 in), slot 0.035 in x 0.026 in deep, plain Ø2.515 mm shank, example length 0.25 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-no4-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no4-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no4-40x12.7mm.stl",
   "note": "#4 truss head machine screw envelope: shallow spherical cap through Ø6.53 mm (A max 0.257 in) and 1.75 mm high (H max 0.069 in), slot 0.039 in x 0.030 in deep, plain Ø2.845 mm shank, example length 0.5 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-no5-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no5-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no5-40x12.7mm.stl",
   "note": "#5 truss head machine screw envelope: shallow spherical cap through Ø7.34 mm (A max 0.289 in) and 1.98 mm high (H max 0.078 in), slot 0.043 in x 0.034 in deep, plain Ø3.175 mm shank, example length 0.5 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-no6-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no6-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no6-32x12.7mm.stl",
   "note": "#6 truss head machine screw envelope: shallow spherical cap through Ø8.15 mm (A max 0.321 in) and 2.18 mm high (H max 0.086 in), slot 0.048 in x 0.037 in deep, plain Ø3.505 mm shank, example length 0.5 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-no8-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no8-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no8-32x12.7mm.stl",
   "note": "#8 truss head machine screw envelope: shallow spherical cap through Ø9.75 mm (A max 0.384 in) and 2.59 mm high (H max 0.102 in), slot 0.054 in x 0.045 in deep, plain Ø4.166 mm shank, example length 0.5 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-no10-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no10-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no10-24x12.7mm.stl",
   "note": "#10 truss head machine screw envelope: shallow spherical cap through Ø11.38 mm (A max 0.448 in) and 3.00 mm high (H max 0.118 in), slot 0.060 in x 0.053 in deep, plain Ø4.826 mm shank, example length 0.5 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-no12-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no12-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-no12-24x12.7mm.stl",
   "note": "#12 truss head machine screw envelope: shallow spherical cap through Ø12.98 mm (A max 0.511 in) and 3.40 mm high (H max 0.134 in), slot 0.067 in x 0.061 in deep, plain Ø5.486 mm shank, example length 0.5 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-1-4-20x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-1-4-20x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-1-4-20x19.05mm.stl",
   "note": "1/4 truss head machine screw envelope: shallow spherical cap through Ø14.55 mm (A max 0.573 in) and 3.81 mm high (H max 0.150 in), slot 0.075 in x 0.070 in deep, plain Ø6.350 mm shank, example length 0.75 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-5-16-18x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-5-16-18x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-5-16-18x19.05mm.stl",
   "note": "5/16 truss head machine screw envelope: shallow spherical cap through Ø17.73 mm (A max 0.698 in) and 4.65 mm high (H max 0.183 in), slot 0.084 in x 0.085 in deep, plain Ø7.938 mm shank, example length 0.75 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-3-8-16x19.05mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-3-8-16x19.05mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-3-8-16x19.05mm.stl",
   "note": "3/8 truss head machine screw envelope: shallow spherical cap through Ø20.90 mm (A max 0.823 in) and 5.46 mm high (H max 0.215 in), slot 0.094 in x 0.100 in deep, plain Ø9.525 mm shank, example length 0.75 in (Xem's choice); no thread or Phillips cross"
  },
  {
   "file": "truss-1-2-13x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-1-2-13x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/machine-screws-inch-asme-b18-6-3/truss-1-2-13x25.4mm.stl",
   "note": "1/2 truss head machine screw envelope: shallow spherical cap through Ø27.25 mm (A max 1.073 in) and 7.11 mm high (H max 0.280 in), slot 0.106 in x 0.131 in deep, plain Ø12.700 mm shank, example length 1.0 in (Xem's choice); no thread or Phillips cross"
  }
 ],
 "markdown": "https://xemstudio.com/objects/machine-screws-inch-asme-b18-6-3/index.md"
}