{
 "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": "flat-head-socket-cap-screws-inch",
 "name": "Flat head socket cap screws, inch (ASME B18.3, 82° countersunk) #0 to 1-1/2: head, hex socket, key engagement + models #0 to 1",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the head diameter, head height, hex key and countersink angle of a 1/4-20 or #10-24 flat head socket cap screw?",
 "tags": [
  "flat head socket cap screw",
  "countersunk socket screw",
  "82 degree",
  "flat head cap screw",
  "allen flat head",
  "asme b18.3",
  "inch",
  "fastener"
 ],
 "aliases": [
  "flat head socket cap screw dimensions",
  "1/4-20 flat head socket cap screw head diameter",
  "#10-24 flat head socket cap screw countersink",
  "flat head cap screw countersink angle",
  "82 degree countersunk screw dimensions",
  "flat head socket screw hex key size",
  "5/16-18 flat head socket screw head size",
  "3/8-16 flat socket head cap screw head height",
  "asme b18.3 flat head cap screw",
  "countersunk allen screw inch dimensions"
 ],
 "overall_mm": {
  "length": 50.8,
  "width": 49.2,
  "height": 50.8
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 18,
 "url": "https://xemstudio.com/objects/flat-head-socket-cap-screws-inch/",
 "sheet_txt": "https://xemstudio.com/objects/flat-head-socket-cap-screws-inch/sheet.txt",
 "sheet": {
  "basis": "Torqbolt's ASME B18.3 flat countersunk head table with fasten.it's ASME B18.3 Table 2A (agrees on A, H, key engagement and socket sizes; states the 82° included angle); 18 envelope models as files",
  "overall_mm": {
   "length": 50.8,
   "width": 49.2,
   "height": 50.8
  },
  "notes": [
   "Inch dimensions per ASME B18.3 (flat countersunk head cap screws): body diameter D max (theoretical sharp) and absolute min, head diameter A max / min, head height H max, hexagon socket (nominal), spline socket (nominal, 3/4 and below on Torqbolt's table), key engagement min, #0 to 1-1/2. fasten.it's Table 2A prints the same A max, H max, key engagement and socket values (it also lists UNC and UNF threads per inch); both give the bearing cone as an included angle of about 82° (fasten.it) — Torqbolt does not state the angle. Column assignment of the two socket columns follows the ratios (hex sizes match the standard's hex key series, for example 5/32 for 1/4 and 3/16 for 5/16), and fasten.it's page labels them the same way.",
   "Computed column: the cone height (A max - D) / (2 tan 41°). It agrees with the published H max to within 0.001 in for every size on the page (for example 1/4: 0.1616 against 0.161), which is why the 82° cone can be drawn from A max and D alone.",
   "Files are Xem-drawn envelopes at true nominal size: the 82° cone from A max down to D max (flat top), a hexagon socket at the nominal across-flats size and the minimum key-engagement depth, and a plain shank at D max. No thread, no spline-socket option, no socket bottom cone, no point. Example lengths (0.25 / 0.5 / 1 / 1.5 / 2 in by size, head top to tip) are Xem's choice. Sizes 1-1/8 to 1-1/2 are in the table only.",
   "Metric 90° flat socket screws: countersunk-screws-metric (ISO 10642). Slotted and Phillips 82° flat machine screws: machine-screws-inch-asme-b18-6-3. Socket head cap screws: socket-head-cap-screws-inch-full."
  ],
  "table": {
   "columns": [
    "size",
    "TPI UNC / UNF",
    "body D max / abs. min (in)",
    "head A max / min (in)",
    "head height H max (in)",
    "hex socket (nominal)",
    "spline socket (nominal)",
    "key engagement min (in)",
    "cone height, computed (in)",
    "head dia x height max (mm, computed)"
   ],
   "rows": [
    [
     "#0",
     "— / 80",
     "0.0600 / 0.0568",
     "0.138 / 0.117",
     "0.044",
     ".035 in",
     ".048 in",
     "0.025",
     "0.045",
     "3.51 x 1.12"
    ],
    [
     "#1",
     "64 / 72",
     "0.0730 / 0.0695",
     "0.168 / 0.143",
     "0.054",
     ".050 in",
     ".060 in",
     "0.031",
     "0.055",
     "4.27 x 1.37"
    ],
    [
     "#2",
     "56 / 64",
     "0.0860 / 0.0822",
     "0.197 / 0.168",
     "0.064",
     ".050 in",
     ".060 in",
     "0.038",
     "0.064",
     "5.00 x 1.63"
    ],
    [
     "#3",
     "48 / 56",
     "0.0990 / 0.0949",
     "0.226 / 0.193",
     "0.073",
     "1/16 in",
     ".072 in",
     "0.044",
     "0.073",
     "5.74 x 1.85"
    ],
    [
     "#4",
     "40 / 48",
     "0.1120 / 0.1075",
     "0.255 / 0.218",
     "0.083",
     "1/16 in",
     ".072 in",
     "0.055",
     "0.082",
     "6.48 x 2.11"
    ],
    [
     "#5",
     "40 / 44",
     "0.1250 / 0.1202",
     "0.281 / 0.240",
     "0.090",
     "5/64 in",
     ".096 in",
     "0.061",
     "0.090",
     "7.14 x 2.29"
    ],
    [
     "#6",
     "32 / 40",
     "0.1380 / 0.1329",
     "0.307 / 0.263",
     "0.097",
     "5/64 in",
     ".096 in",
     "0.066",
     "0.097",
     "7.80 x 2.46"
    ],
    [
     "#8",
     "32 / 36",
     "0.1640 / 0.1585",
     "0.359 / 0.311",
     "0.112",
     "3/32 in",
     ".111 in",
     "0.076",
     "0.112",
     "9.12 x 2.84"
    ],
    [
     "#10",
     "24 / 32",
     "0.1900 / 0.1840",
     "0.411 / 0.359",
     "0.127",
     "1/8 in",
     ".145 in",
     "0.087",
     "0.127",
     "10.44 x 3.23"
    ],
    [
     "1/4",
     "20 / 28",
     "0.2500 / 0.2435",
     "0.531 / 0.480",
     "0.161",
     "5/32 in",
     ".183 in",
     "0.111",
     "0.162",
     "13.49 x 4.09"
    ],
    [
     "5/16",
     "18 / 24",
     "0.3125 / 0.3053",
     "0.656 / 0.600",
     "0.198",
     "3/16 in",
     ".216 in",
     "0.135",
     "0.198",
     "16.66 x 5.03"
    ],
    [
     "3/8",
     "16 / 24",
     "0.3750 / 0.3678",
     "0.781 / 0.720",
     "0.234",
     "7/32 in",
     ".251 in",
     "0.159",
     "0.234",
     "19.84 x 5.94"
    ],
    [
     "7/16",
     "14 / 20",
     "0.4375 / 0.4294",
     "0.844 / 0.781",
     "0.234",
     "1/4 in",
     ".291 in",
     "0.159",
     "0.234",
     "21.44 x 5.94"
    ],
    [
     "1/2",
     "13 / 20",
     "0.5000 / 0.4919",
     "0.938 / 0.872",
     "0.251",
     "5/16 in",
     ".372 in",
     "0.172",
     "0.252",
     "23.83 x 6.38"
    ],
    [
     "5/8",
     "11 / 18",
     "0.6250 / 0.6163",
     "1.188 / 1.112",
     "0.324",
     "3/8 in",
     ".454 in",
     "0.220",
     "0.324",
     "30.18 x 8.23"
    ],
    [
     "3/4",
     "10 / 16",
     "0.7500 / 0.7406",
     "1.438 / 1.355",
     "0.396",
     "1/2 in",
     ".454 in",
     "0.220",
     "0.396",
     "36.53 x 10.06"
    ],
    [
     "7/8",
     "9 / 14",
     "0.8750 / 0.8647",
     "1.688 / 1.604",
     "0.468",
     "9/16 in",
     "—",
     "0.248",
     "0.468",
     "42.88 x 11.89"
    ],
    [
     "1",
     "8 / 12",
     "1.0000 / 0.9886",
     "1.938 / 1.841",
     "0.540",
     "5/8 in",
     "—",
     "0.297",
     "0.540",
     "49.23 x 13.72"
    ],
    [
     "1-1/8",
     "7 / 12",
     "1.1250 / 1.1086",
     "2.188 / 2.079",
     "0.611",
     "3/4 in",
     "—",
     "0.325",
     "0.611",
     "55.58 x 15.52"
    ],
    [
     "1-1/4",
     "7 / 12",
     "1.2500 / 1.2336",
     "2.438 / 2.316",
     "0.683",
     "7/8 in",
     "—",
     "0.358",
     "0.683",
     "61.93 x 17.35"
    ],
    [
     "1-3/8",
     "6 / 12",
     "1.3750 / 1.3568",
     "2.688 / 2.553",
     "0.755",
     "7/8 in",
     "—",
     "0.402",
     "0.755",
     "68.28 x 19.18"
    ],
    [
     "1-1/2",
     "6 / 12",
     "1.5000 / 1.4818",
     "2.938 / 2.791",
     "0.827",
     "1 in",
     "—",
     "0.435",
     "0.827",
     "74.63 x 21.01"
    ]
   ]
  }
 },
 "sheet_text": "Flat head socket cap screws, inch (ASME B18.3, 82° countersunk) #0 to 1-1/2: head, hex socket, key engagement + models #0 to 1 — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/flat-head-socket-cap-screws-inch/  (sheet CC BY 4.0)\nBasis: Torqbolt's ASME B18.3 flat countersunk head table with fasten.it's ASME B18.3 Table 2A (agrees on A, H, key engagement and socket sizes; states the 82° included angle); 18 envelope models as files\nCatalog version: 2026-10-20\n\nOverall (mm): length 50.8, width 49.2, height 50.8\n- Inch dimensions per ASME B18.3 (flat countersunk head cap screws): body diameter D max (theoretical sharp) and absolute min, head diameter A max / min, head height H max, hexagon socket (nominal), spline socket (nominal, 3/4 and below on Torqbolt's table), key engagement min, #0 to 1-1/2. fasten.it's Table 2A prints the same A max, H max, key engagement and socket values (it also lists UNC and UNF threads per inch); both give the bearing cone as an included angle of about 82° (fasten.it) — Torqbolt does not state the angle. Column assignment of the two socket columns follows the ratios (hex sizes match the standard's hex key series, for example 5/32 for 1/4 and 3/16 for 5/16), and fasten.it's page labels them the same way.\n- Computed column: the cone height (A max - D) / (2 tan 41°). It agrees with the published H max to within 0.001 in for every size on the page (for example 1/4: 0.1616 against 0.161), which is why the 82° cone can be drawn from A max and D alone.\n- Files are Xem-drawn envelopes at true nominal size: the 82° cone from A max down to D max (flat top), a hexagon socket at the nominal across-flats size and the minimum key-engagement depth, and a plain shank at D max. No thread, no spline-socket option, no socket bottom cone, no point. Example lengths (0.25 / 0.5 / 1 / 1.5 / 2 in by size, head top to tip) are Xem's choice. Sizes 1-1/8 to 1-1/2 are in the table only.\n- Metric 90° flat socket screws: countersunk-screws-metric (ISO 10642). Slotted and Phillips 82° flat machine screws: machine-screws-inch-asme-b18-6-3. Socket head cap screws: socket-head-cap-screws-inch-full.\n\nsize  TPI UNC / UNF  body D max / abs. min (in)  head A max / min (in)  head height H max (in)  hex socket (nominal)  spline socket (nominal)  key engagement min (in)  cone height, computed (in)  head dia x height max (mm, computed)\n#0  — / 80  0.0600 / 0.0568  0.138 / 0.117  0.044  .035 in  .048 in  0.025  0.045  3.51 x 1.12\n#1  64 / 72  0.0730 / 0.0695  0.168 / 0.143  0.054  .050 in  .060 in  0.031  0.055  4.27 x 1.37\n#2  56 / 64  0.0860 / 0.0822  0.197 / 0.168  0.064  .050 in  .060 in  0.038  0.064  5.00 x 1.63\n#3  48 / 56  0.0990 / 0.0949  0.226 / 0.193  0.073  1/16 in  .072 in  0.044  0.073  5.74 x 1.85\n#4  40 / 48  0.1120 / 0.1075  0.255 / 0.218  0.083  1/16 in  .072 in  0.055  0.082  6.48 x 2.11\n#5  40 / 44  0.1250 / 0.1202  0.281 / 0.240  0.090  5/64 in  .096 in  0.061  0.090  7.14 x 2.29\n#6  32 / 40  0.1380 / 0.1329  0.307 / 0.263  0.097  5/64 in  .096 in  0.066  0.097  7.80 x 2.46\n#8  32 / 36  0.1640 / 0.1585  0.359 / 0.311  0.112  3/32 in  .111 in  0.076  0.112  9.12 x 2.84\n#10  24 / 32  0.1900 / 0.1840  0.411 / 0.359  0.127  1/8 in  .145 in  0.087  0.127  10.44 x 3.23\n1/4  20 / 28  0.2500 / 0.2435  0.531 / 0.480  0.161  5/32 in  .183 in  0.111  0.162  13.49 x 4.09\n5/16  18 / 24  0.3125 / 0.3053  0.656 / 0.600  0.198  3/16 in  .216 in  0.135  0.198  16.66 x 5.03\n3/8  16 / 24  0.3750 / 0.3678  0.781 / 0.720  0.234  7/32 in  .251 in  0.159  0.234  19.84 x 5.94\n7/16  14 / 20  0.4375 / 0.4294  0.844 / 0.781  0.234  1/4 in  .291 in  0.159  0.234  21.44 x 5.94\n1/2  13 / 20  0.5000 / 0.4919  0.938 / 0.872  0.251  5/16 in  .372 in  0.172  0.252  23.83 x 6.38\n5/8  11 / 18  0.6250 / 0.6163  1.188 / 1.112  0.324  3/8 in  .454 in  0.220  0.324  30.18 x 8.23\n3/4  10 / 16  0.7500 / 0.7406  1.438 / 1.355  0.396  1/2 in  .454 in  0.220  0.396  36.53 x 10.06\n7/8  9 / 14  0.8750 / 0.8647  1.688 / 1.604  0.468  9/16 in  —  0.248  0.468  42.88 x 11.89\n1  8 / 12  1.0000 / 0.9886  1.938 / 1.841  0.540  5/8 in  —  0.297  0.540  49.23 x 13.72\n1-1/8  7 / 12  1.1250 / 1.1086  2.188 / 2.079  0.611  3/4 in  —  0.325  0.611  55.58 x 15.52\n1-1/4  7 / 12  1.2500 / 1.2336  2.438 / 2.316  0.683  7/8 in  —  0.358  0.683  61.93 x 17.35\n1-3/8  6 / 12  1.3750 / 1.3568  2.688 / 2.553  0.755  7/8 in  —  0.402  0.755  68.28 x 19.18\n1-1/2  6 / 12  1.5000 / 1.4818  2.938 / 2.791  0.827  1 in  —  0.435  0.827  74.63 x 21.01\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Torqbolt: ASME B18.3 hexagon and spline socket flat countersunk head cap screws: D, A max / min, H max, spline and hexagon socket, key engagement, #0 to 1-1/2 — web — Publisher's page; dimensions are facts — https://torqbolt.com/asme-b18-3-hexagon-and-spline-socket-flat-countersunk-head-cap-screws-dimensions-standards-specifications\n- fasten.it: ASME B18.3 Table 2A flat countersunk head cap screws, inch series: same A, H, key engagement and socket sizes; states a conical bearing surface with an included angle of approximately 82 degrees — web — Publisher's page; dimensions are facts — https://www.fasten.it/en/norms/norm/asme_b18.3_table_2a\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: Socket head screws (cap, flat, set) (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/socket-head-screws/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 18 parts): https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/index.json\nAPI: https://xemstudio.com/api/geometry?object=flat-head-socket-cap-screws-inch\n",
 "sources": [
  {
   "publisher": "Torqbolt",
   "title": "ASME B18.3 hexagon and spline socket flat countersunk head cap screws: D, A max / min, H max, spline and hexagon socket, key engagement, #0 to 1-1/2",
   "url": "https://torqbolt.com/asme-b18-3-hexagon-and-spline-socket-flat-countersunk-head-cap-screws-dimensions-standards-specifications",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "fasten.it",
   "title": "ASME B18.3 Table 2A flat countersunk head cap screws, inch series: same A, H, key engagement and socket sizes; states a conical bearing surface with an included angle of approximately 82 degrees",
   "url": "https://www.fasten.it/en/norms/norm/asme_b18.3_table_2a",
   "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": "Socket head screws (cap, flat, set) (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/socket-head-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": [
  "socket-head-cap-screws-inch-full",
  "socket-head-cap-screws-inch",
  "machine-screws-inch-asme-b18-6-3",
  "countersunk-screws-metric",
  "button-head-socket-screws-inch",
  "thread-reference-tap-drills-clearance",
  "wood-screws-flat-head-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": "head (82° cone)",
   "exact": "A max per size: #10 0.411 in (10.44 mm), 1/4 0.531 in (13.49 mm), 5/16 0.656 in, 3/8 0.781 in, 1/2 0.938 in; 82° included angle",
   "mates": "82° countersink, Ø at the surface = A max + your process clearance, depth to D",
   "fit": "slide",
   "files": "fhcs-"
  },
  {
   "feature": "shank (thread as plain cylinder)",
   "exact": "D max per size: #10 Ø4.826, 1/4 Ø6.350, 3/8 Ø9.525, 1/2 Ø12.700 mm",
   "mates": "tapped hole at the tap drill, or clearance hole, see thread-reference-tap-drills-clearance",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "hex socket",
   "exact": "nominal across flats: #10 1/8, 1/4 5/32, 5/16 3/16, 3/8 7/32, 1/2 5/16 in",
   "mates": "hex key of the same size (inch series)",
   "fit": "slide",
   "files": "fhcs-"
  }
 ],
 "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 countersink angle of an inch flat head socket cap screw?",
   "a": "82° included angle (ASME B18.3, as stated by fasten.it); the metric ISO 10642 screw is 90°."
  },
  {
   "q": "How big is the head of a 1/4-20 flat head socket cap screw?",
   "a": "0.531 in max / 0.480 in min across the top, 0.161 in high, 5/32 in hex socket, key engagement 0.111 in min."
  },
  {
   "q": "What hex key for a #10-24 flat head socket cap screw?",
   "a": "1/8 in; head diameter 0.411 in max, height 0.127 in max."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "fhcs-no0-80x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no0-80x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no0-80x6.35mm.stl",
   "note": "#0 flat head socket cap screw envelope: 82° cone from Ø3.51 mm (A max 0.138 in) to the Ø1.524 mm body over 1.12 mm (H max 0.044 in), hex socket .035 in across flats x 0.025 in deep (key engagement min), plain shank, example overall length head top to tip 0.25 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no1-64x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no1-64x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no1-64x6.35mm.stl",
   "note": "#1 flat head socket cap screw envelope: 82° cone from Ø4.27 mm (A max 0.168 in) to the Ø1.854 mm body over 1.37 mm (H max 0.054 in), hex socket .050 in across flats x 0.031 in deep (key engagement min), plain shank, example overall length head top to tip 0.25 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no2-56x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no2-56x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no2-56x6.35mm.stl",
   "note": "#2 flat head socket cap screw envelope: 82° cone from Ø5.00 mm (A max 0.197 in) to the Ø2.184 mm body over 1.63 mm (H max 0.064 in), hex socket .050 in across flats x 0.038 in deep (key engagement min), plain shank, example overall length head top to tip 0.25 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no3-48x6.35mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no3-48x6.35mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no3-48x6.35mm.stl",
   "note": "#3 flat head socket cap screw envelope: 82° cone from Ø5.74 mm (A max 0.226 in) to the Ø2.515 mm body over 1.85 mm (H max 0.073 in), hex socket 1/16 in across flats x 0.044 in deep (key engagement min), plain shank, example overall length head top to tip 0.25 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no4-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no4-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no4-40x12.7mm.stl",
   "note": "#4 flat head socket cap screw envelope: 82° cone from Ø6.48 mm (A max 0.255 in) to the Ø2.845 mm body over 2.11 mm (H max 0.083 in), hex socket 1/16 in across flats x 0.055 in deep (key engagement min), plain shank, example overall length head top to tip 0.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no5-40x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no5-40x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no5-40x12.7mm.stl",
   "note": "#5 flat head socket cap screw envelope: 82° cone from Ø7.14 mm (A max 0.281 in) to the Ø3.175 mm body over 2.29 mm (H max 0.090 in), hex socket 5/64 in across flats x 0.061 in deep (key engagement min), plain shank, example overall length head top to tip 0.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no6-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no6-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no6-32x12.7mm.stl",
   "note": "#6 flat head socket cap screw envelope: 82° cone from Ø7.80 mm (A max 0.307 in) to the Ø3.505 mm body over 2.46 mm (H max 0.097 in), hex socket 5/64 in across flats x 0.066 in deep (key engagement min), plain shank, example overall length head top to tip 0.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no8-32x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no8-32x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no8-32x12.7mm.stl",
   "note": "#8 flat head socket cap screw envelope: 82° cone from Ø9.12 mm (A max 0.359 in) to the Ø4.166 mm body over 2.84 mm (H max 0.112 in), hex socket 3/32 in across flats x 0.076 in deep (key engagement min), plain shank, example overall length head top to tip 0.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-no10-24x12.7mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no10-24x12.7mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-no10-24x12.7mm.stl",
   "note": "#10 flat head socket cap screw envelope: 82° cone from Ø10.44 mm (A max 0.411 in) to the Ø4.826 mm body over 3.23 mm (H max 0.127 in), hex socket 1/8 in across flats x 0.087 in deep (key engagement min), plain shank, example overall length head top to tip 0.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-1-4-20x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-1-4-20x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-1-4-20x25.4mm.stl",
   "note": "1/4 flat head socket cap screw envelope: 82° cone from Ø13.49 mm (A max 0.531 in) to the Ø6.350 mm body over 4.09 mm (H max 0.161 in), hex socket 5/32 in across flats x 0.111 in deep (key engagement min), plain shank, example overall length head top to tip 1 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-5-16-18x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-5-16-18x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-5-16-18x25.4mm.stl",
   "note": "5/16 flat head socket cap screw envelope: 82° cone from Ø16.66 mm (A max 0.656 in) to the Ø7.938 mm body over 5.03 mm (H max 0.198 in), hex socket 3/16 in across flats x 0.135 in deep (key engagement min), plain shank, example overall length head top to tip 1 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-3-8-16x25.4mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-3-8-16x25.4mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-3-8-16x25.4mm.stl",
   "note": "3/8 flat head socket cap screw envelope: 82° cone from Ø19.84 mm (A max 0.781 in) to the Ø9.525 mm body over 5.94 mm (H max 0.234 in), hex socket 7/32 in across flats x 0.159 in deep (key engagement min), plain shank, example overall length head top to tip 1 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-7-16-14x38.1mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-7-16-14x38.1mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-7-16-14x38.1mm.stl",
   "note": "7/16 flat head socket cap screw envelope: 82° cone from Ø21.44 mm (A max 0.844 in) to the Ø11.112 mm body over 5.94 mm (H max 0.234 in), hex socket 1/4 in across flats x 0.159 in deep (key engagement min), plain shank, example overall length head top to tip 1.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-1-2-13x38.1mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-1-2-13x38.1mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-1-2-13x38.1mm.stl",
   "note": "1/2 flat head socket cap screw envelope: 82° cone from Ø23.83 mm (A max 0.938 in) to the Ø12.700 mm body over 6.38 mm (H max 0.251 in), hex socket 5/16 in across flats x 0.172 in deep (key engagement min), plain shank, example overall length head top to tip 1.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-5-8-11x38.1mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-5-8-11x38.1mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-5-8-11x38.1mm.stl",
   "note": "5/8 flat head socket cap screw envelope: 82° cone from Ø30.18 mm (A max 1.188 in) to the Ø15.875 mm body over 8.23 mm (H max 0.324 in), hex socket 3/8 in across flats x 0.220 in deep (key engagement min), plain shank, example overall length head top to tip 1.5 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-3-4-10x50.8mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-3-4-10x50.8mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-3-4-10x50.8mm.stl",
   "note": "3/4 flat head socket cap screw envelope: 82° cone from Ø36.53 mm (A max 1.438 in) to the Ø19.050 mm body over 10.06 mm (H max 0.396 in), hex socket 1/2 in across flats x 0.220 in deep (key engagement min), plain shank, example overall length head top to tip 2 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-7-8-9x50.8mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-7-8-9x50.8mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-7-8-9x50.8mm.stl",
   "note": "7/8 flat head socket cap screw envelope: 82° cone from Ø42.88 mm (A max 1.688 in) to the Ø22.225 mm body over 11.89 mm (H max 0.468 in), hex socket 9/16 in across flats x 0.248 in deep (key engagement min), plain shank, example overall length head top to tip 2 in (Xem's choice); no thread, spline option, socket cone or point"
  },
  {
   "file": "fhcs-1-8x50.8mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-1-8x50.8mm.step",
   "stl": "https://xemstudio.com/files/hardware/flat-head-socket-cap-screws-inch/fhcs-1-8x50.8mm.stl",
   "note": "1 flat head socket cap screw envelope: 82° cone from Ø49.23 mm (A max 1.938 in) to the Ø25.400 mm body over 13.72 mm (H max 0.540 in), hex socket 5/8 in across flats x 0.297 in deep (key engagement min), plain shank, example overall length head top to tip 2 in (Xem's choice); no thread, spline option, socket cone or point"
  }
 ],
 "markdown": "https://xemstudio.com/objects/flat-head-socket-cap-screws-inch/index.md"
}