{
 "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": "blind-rivets-6-4mm-1-4in-csk-flange",
 "name": "Blind rivets 6.4 mm and 1/4 in: dome, countersunk and large-flange heads, hole size, head diameter, grip range, length",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What hole size does a 6.4 mm or 1/4 in pop rivet need, and how big is its head?",
 "tags": [
  "blind rivet",
  "pop rivet",
  "6.4 mm rivet",
  "1/4 pop rivet",
  "countersunk rivet",
  "large flange rivet",
  "iso 15977",
  "iso 15978",
  "din 7337",
  "fastener",
  "tool"
 ],
 "aliases": [
  "6.4 mm pop rivet hole size",
  "1/4 pop rivet drill size",
  "1/4 inch blind rivet hole",
  "6.4 mm blind rivet grip range",
  "pop rivet 6.4 head diameter",
  "countersunk pop rivet 6.4",
  "large flange blind rivet dimensions",
  "ad84 rivet dimensions",
  "1/4 rivet drill F",
  "pop rivet size chart 1/4",
  "6.4 x 20 rivet grip",
  "blind rivet 6.4 hole 6.5"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/blind-rivets-6-4mm-1-4in-csk-flange/",
 "sheet_txt": "https://xemstudio.com/objects/blind-rivets-6-4mm-1-4in-csk-flange/sheet.txt",
 "sheet": {
  "basis": "Fortress (6.4 mm 8-series), GESIPA (dome, countersunk 120° and large flange), Westfield (large head), Black Crow and LA Fasteners' Stanley / Bulb-Tite catalogue (1/4 in); numbers only",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Millimetres for the metric rows, inches for the 1/4 in rows (the units are in the cells). Extends blind-pop-rivets-dome-head (3.2 to 4.8 mm and 1/8 to 3/16 in). 6.4 mm: Fortress's 8-series gives hole 6.5 – 6.6 mm, head diameter 12.07 – 13.34 mm, head thickness 2.03 mm, grip and length per code; its sheet covers domed and countersunk rivets in one table and does not say which row is which. GESIPA's 6.4 mm dome has a setting head dk max of 13.0 mm and hole 6.5 mm (shear 3400 N, tensile 4600 N), and its 6.4 x 12 to 6.4 x 30 countersunk 120° list hole 6.5 mm and the grip ranges shown; GESIPA's countersunk and large-flange strength table has no 6.4 mm line.",
   "1/4 in: Black Crow's reference guide gives drill F and hole .257 – .261 in for every size (6.53 – 6.63 mm, which agrees with Fortress's 6.5 – 6.6) with trade sizes 84 to 816 (grip and rivet length range per size; no head diameter printed). LA Fasteners' Stanley / POP catalogue gives, for AD84 to AD816, grip, length under head, head diameter .500 in (12.70 mm, inside Fortress's 12.07 – 13.34) and head height .073 in; the extraction did not label its columns, so they are read by pattern (grip, length, head diameter, head height) and should be checked against the printed catalogue. It lists no 1/4 in countersunk or large-flange POP rivet; Olympic Bulb-Tite 1/4 in blind rivets (a different type, with a bulb-forming sleeve) list countersunk (head .452 in, height .147 in) and dome (head .535 – .565 in, height .116 – .118 in) forms, which are shown as printed.",
   "Large flange: GESIPA sizes are 3.2 (K 9.5), 4 (K 12), 4.8 (K 16) and 5 mm (K 11 or K 14); Westfield (design based on DIN 7337, 'non-standard head shape') prints flange diameters 9.5, 12 and 14 mm for 3.2, 4 and 4.8 mm. The 4.8 mm values disagree (16 mm GESIPA, 14 mm Westfield); both are shown. No 6.4 mm or 1/4 in large-flange rivet was found in any table read, so none is claimed.",
   "No files: the head profile (dome radius, countersink angle detail) and mandrel are not published as numbers for the sizes here. ISO 15977 (dome), 15978 (countersunk) and the large-flange standards were not read directly; the page reports maker tables only. McMaster-Carr sells pop rivets with per-part STEP; linked, not copied."
  ],
  "table": {
   "columns": [
    "source / type",
    "diameter",
    "code",
    "hole",
    "head diameter / height",
    "grip range",
    "length",
    "strength / note"
   ],
   "rows": [
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-2",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "0.8 – 3.2",
     9.2,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-4",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "3.2 – 6.4",
     12.4,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-6",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "6.4 – 9.5",
     15.5,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-8",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "9.5 – 12.7",
     18.7,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-10",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "12.7 – 15.9",
     21.9,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-12",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "15.9 – 19.1",
     25.1,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-14",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "19.1 – 22.2",
     28.2,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "Fortress (dome or countersunk; the sheet does not say which row is which)",
     "6.4 mm",
     "8-16",
     "6.5 – 6.6",
     "12.07 – 13.34 / 2.03",
     "22.2 – 25.4",
     31.4,
     "shear 2050 N, tensile 2500 N (min)"
    ],
    [
     "GESIPA countersunk 120°, Alu / steel",
     "6.4 mm",
     "6.4 x 12",
     "6.5",
     "13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)",
     "2.0 – 6.0",
     "12",
     "shear 3400 N, tensile 4600 N (dome); dm 3.65 max"
    ],
    [
     "GESIPA countersunk 120°, Alu / steel",
     "6.4 mm",
     "6.4 x 16",
     "6.5",
     "13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)",
     "6.0 – 10.0",
     "16",
     "shear 3400 N, tensile 4600 N (dome); dm 3.65 max"
    ],
    [
     "GESIPA countersunk 120°, Alu / steel",
     "6.4 mm",
     "6.4 x 20",
     "6.5",
     "13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)",
     "10.0 – 14.0",
     "20",
     "shear 3400 N, tensile 4600 N (dome); dm 3.65 max"
    ],
    [
     "GESIPA countersunk 120°, Alu / steel",
     "6.4 mm",
     "6.4 x 25",
     "6.5",
     "13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)",
     "14.0 – 18.0",
     "25",
     "shear 3400 N, tensile 4600 N (dome); dm 3.65 max"
    ],
    [
     "GESIPA countersunk 120°, Alu / steel",
     "6.4 mm",
     "6.4 x 30",
     "6.5",
     "13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)",
     "18.0 – 23.0",
     "30",
     "shear 3400 N, tensile 4600 N (dome); dm 3.65 max"
    ],
    [
     "GESIPA large flange (K = flange dk), Alu / steel",
     "3.2 mm",
     "K 9.5",
     "3.3",
     "9.5 dk max",
     "see source (grip per length)",
     "—",
     "no 6.4 mm large flange in the sheet"
    ],
    [
     "GESIPA large flange (K = flange dk), Alu / steel",
     "4 mm",
     "K 12",
     "4.1",
     "12 dk max",
     "see source (grip per length)",
     "—",
     "no 6.4 mm large flange in the sheet"
    ],
    [
     "GESIPA large flange (K = flange dk), Alu / steel",
     "4.8 mm",
     "K 16",
     "4.9",
     "16 dk max",
     "see source (grip per length)",
     "—",
     "no 6.4 mm large flange in the sheet"
    ],
    [
     "GESIPA large flange (K = flange dk), Alu / steel",
     "5 mm",
     "K 11",
     "5.1",
     "11 dk max",
     "see source (grip per length)",
     "—",
     "no 6.4 mm large flange in the sheet"
    ],
    [
     "GESIPA large flange (K = flange dk), Alu / steel",
     "5 mm",
     "K 14",
     "5.1",
     "14 dk max",
     "see source (grip per length)",
     "—",
     "no 6.4 mm large flange in the sheet"
    ],
    [
     "Westfield large head (DIN 7337 based)",
     "3.2 mm",
     "—",
     "3.3",
     "9.5 flange d2 / 2.0 thick e",
     "1.0 – 14",
     "6 – 14",
     "shear 740 / 1180 / 1540 N, tensile 980 / 1600 / 2230 N"
    ],
    [
     "Westfield large head (DIN 7337 based)",
     "4.0 mm",
     "—",
     "4.1",
     "12.0 flange d2 / 2.5 thick e",
     "0.5 – 15.5",
     "6 – 20",
     "shear 740 / 1180 / 1540 N, tensile 980 / 1600 / 2230 N"
    ],
    [
     "Westfield large head (DIN 7337 based)",
     "4.8 mm",
     "—",
     "4.9",
     "14.0 flange d2 / 2.5 thick e",
     "3.5 – 17",
     "10 – 22",
     "shear 740 / 1180 / 1540 N, tensile 980 / 1600 / 2230 N"
    ],
    [
     "Black Crow / Stanley AD8x dome (1/4 in)",
     "1/4 in",
     "84 (AD84)",
     ".257 – .261 in (drill F)",
     ".500 head dia / .073 height (Stanley, as read)",
     ".063 – .250",
     ".455 / .495 (Black Crow) / .490 under head (Stanley)",
     "—"
    ],
    [
     "Black Crow / Stanley AD8x dome (1/4 in)",
     "1/4 in",
     "86 (AD86)",
     ".257 – .261 in (drill F)",
     ".500 head dia / .073 height (Stanley, as read)",
     ".251 – .375",
     ".580 / .620 (Black Crow) / .615 under head (Stanley)",
     "—"
    ],
    [
     "Black Crow / Stanley AD8x dome (1/4 in)",
     "1/4 in",
     "88 (AD88)",
     ".257 – .261 in (drill F)",
     ".500 head dia / .073 height (Stanley, as read)",
     ".376 – .500",
     ".705 / .745 (Black Crow) / .740 under head (Stanley)",
     "—"
    ],
    [
     "Black Crow / Stanley AD8x dome (1/4 in)",
     "1/4 in",
     "810 (AD810)",
     ".257 – .261 in (drill F)",
     ".500 head dia / .073 height (Stanley, as read)",
     ".501 – .625",
     ".830 / .870 (Black Crow) / .865 under head (Stanley)",
     "—"
    ],
    [
     "Black Crow / Stanley AD8x dome (1/4 in)",
     "1/4 in",
     "812 (AD812)",
     ".257 – .261 in (drill F)",
     ".500 head dia / .073 height (Stanley, as read)",
     ".626 – .750",
     ".955 / .995 (Black Crow) / .990 under head (Stanley)",
     "—"
    ],
    [
     "Black Crow / Stanley AD8x dome (1/4 in)",
     "1/4 in",
     "814 (AD814)",
     ".257 – .261 in (drill F)",
     ".500 head dia / .073 height (Stanley, as read)",
     ".751 – .875",
     "1.080 / 1.120 (Black Crow) / — under head (Stanley)",
     "—"
    ],
    [
     "Black Crow / Stanley AD8x dome (1/4 in)",
     "1/4 in",
     "816 (AD816)",
     ".257 – .261 in (drill F)",
     ".500 head dia / .073 height (Stanley, as read)",
     ".876 – 1.000 (Black Crow); .751 – 1.000 (Stanley AD816)",
     "1.205 / 1.245 (Black Crow) / 1.240 under head (Stanley)",
     "—"
    ],
    [
     "Olympic Bulb-Tite 1/4 in countersunk (alu)",
     "1/4 in",
     "OLYRV660184",
     ".250 – .263 in",
     ".452 head dia / .147 height / body .246",
     ".150 – .250",
     ".815 max (blind-side protrusion F 1.005 max)",
     "—"
    ],
    [
     "Olympic Bulb-Tite 1/4 in dome, protruding crown",
     "1/4 in",
     "OLYRV660484",
     ".250 – .263 in",
     ".555 – .565 head dia / .118 height / body .246",
     ".062 – .250",
     ".815 max (F 1.005 max)",
     "—"
    ],
    [
     "Olympic Bulb-Tite 1/4 in dome, recessed crown",
     "1/4 in",
     "OLYRV660684",
     ".250 – .263 in",
     ".535 – .550 head dia / .116 height / body .246",
     ".040 – .250",
     ".815 max (F 1.005 max)",
     "—"
    ]
   ]
  }
 },
 "sheet_text": "Blind rivets 6.4 mm and 1/4 in: dome, countersunk and large-flange heads, hole size, head diameter, grip range, length — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/blind-rivets-6-4mm-1-4in-csk-flange/  (sheet CC BY 4.0)\nBasis: Fortress (6.4 mm 8-series), GESIPA (dome, countersunk 120° and large flange), Westfield (large head), Black Crow and LA Fasteners' Stanley / Bulb-Tite catalogue (1/4 in); numbers only\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Millimetres for the metric rows, inches for the 1/4 in rows (the units are in the cells). Extends blind-pop-rivets-dome-head (3.2 to 4.8 mm and 1/8 to 3/16 in). 6.4 mm: Fortress's 8-series gives hole 6.5 – 6.6 mm, head diameter 12.07 – 13.34 mm, head thickness 2.03 mm, grip and length per code; its sheet covers domed and countersunk rivets in one table and does not say which row is which. GESIPA's 6.4 mm dome has a setting head dk max of 13.0 mm and hole 6.5 mm (shear 3400 N, tensile 4600 N), and its 6.4 x 12 to 6.4 x 30 countersunk 120° list hole 6.5 mm and the grip ranges shown; GESIPA's countersunk and large-flange strength table has no 6.4 mm line.\n- 1/4 in: Black Crow's reference guide gives drill F and hole .257 – .261 in for every size (6.53 – 6.63 mm, which agrees with Fortress's 6.5 – 6.6) with trade sizes 84 to 816 (grip and rivet length range per size; no head diameter printed). LA Fasteners' Stanley / POP catalogue gives, for AD84 to AD816, grip, length under head, head diameter .500 in (12.70 mm, inside Fortress's 12.07 – 13.34) and head height .073 in; the extraction did not label its columns, so they are read by pattern (grip, length, head diameter, head height) and should be checked against the printed catalogue. It lists no 1/4 in countersunk or large-flange POP rivet; Olympic Bulb-Tite 1/4 in blind rivets (a different type, with a bulb-forming sleeve) list countersunk (head .452 in, height .147 in) and dome (head .535 – .565 in, height .116 – .118 in) forms, which are shown as printed.\n- Large flange: GESIPA sizes are 3.2 (K 9.5), 4 (K 12), 4.8 (K 16) and 5 mm (K 11 or K 14); Westfield (design based on DIN 7337, 'non-standard head shape') prints flange diameters 9.5, 12 and 14 mm for 3.2, 4 and 4.8 mm. The 4.8 mm values disagree (16 mm GESIPA, 14 mm Westfield); both are shown. No 6.4 mm or 1/4 in large-flange rivet was found in any table read, so none is claimed.\n- No files: the head profile (dome radius, countersink angle detail) and mandrel are not published as numbers for the sizes here. ISO 15977 (dome), 15978 (countersunk) and the large-flange standards were not read directly; the page reports maker tables only. McMaster-Carr sells pop rivets with per-part STEP; linked, not copied.\n\nsource / type  diameter  code  hole  head diameter / height  grip range  length  strength / note\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-2  6.5 – 6.6  12.07 – 13.34 / 2.03  0.8 – 3.2  9.2  shear 2050 N, tensile 2500 N (min)\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-4  6.5 – 6.6  12.07 – 13.34 / 2.03  3.2 – 6.4  12.4  shear 2050 N, tensile 2500 N (min)\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-6  6.5 – 6.6  12.07 – 13.34 / 2.03  6.4 – 9.5  15.5  shear 2050 N, tensile 2500 N (min)\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-8  6.5 – 6.6  12.07 – 13.34 / 2.03  9.5 – 12.7  18.7  shear 2050 N, tensile 2500 N (min)\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-10  6.5 – 6.6  12.07 – 13.34 / 2.03  12.7 – 15.9  21.9  shear 2050 N, tensile 2500 N (min)\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-12  6.5 – 6.6  12.07 – 13.34 / 2.03  15.9 – 19.1  25.1  shear 2050 N, tensile 2500 N (min)\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-14  6.5 – 6.6  12.07 – 13.34 / 2.03  19.1 – 22.2  28.2  shear 2050 N, tensile 2500 N (min)\nFortress (dome or countersunk; the sheet does not say which row is which)  6.4 mm  8-16  6.5 – 6.6  12.07 – 13.34 / 2.03  22.2 – 25.4  31.4  shear 2050 N, tensile 2500 N (min)\nGESIPA countersunk 120°, Alu / steel  6.4 mm  6.4 x 12  6.5  13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)  2.0 – 6.0  12  shear 3400 N, tensile 4600 N (dome); dm 3.65 max\nGESIPA countersunk 120°, Alu / steel  6.4 mm  6.4 x 16  6.5  13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)  6.0 – 10.0  16  shear 3400 N, tensile 4600 N (dome); dm 3.65 max\nGESIPA countersunk 120°, Alu / steel  6.4 mm  6.4 x 20  6.5  13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)  10.0 – 14.0  20  shear 3400 N, tensile 4600 N (dome); dm 3.65 max\nGESIPA countersunk 120°, Alu / steel  6.4 mm  6.4 x 25  6.5  13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)  14.0 – 18.0  25  shear 3400 N, tensile 4600 N (dome); dm 3.65 max\nGESIPA countersunk 120°, Alu / steel  6.4 mm  6.4 x 30  6.5  13.0 dk max (dome table; the sheet gives no 6.4 countersunk dk)  18.0 – 23.0  30  shear 3400 N, tensile 4600 N (dome); dm 3.65 max\nGESIPA large flange (K = flange dk), Alu / steel  3.2 mm  K 9.5  3.3  9.5 dk max  see source (grip per length)  —  no 6.4 mm large flange in the sheet\nGESIPA large flange (K = flange dk), Alu / steel  4 mm  K 12  4.1  12 dk max  see source (grip per length)  —  no 6.4 mm large flange in the sheet\nGESIPA large flange (K = flange dk), Alu / steel  4.8 mm  K 16  4.9  16 dk max  see source (grip per length)  —  no 6.4 mm large flange in the sheet\nGESIPA large flange (K = flange dk), Alu / steel  5 mm  K 11  5.1  11 dk max  see source (grip per length)  —  no 6.4 mm large flange in the sheet\nGESIPA large flange (K = flange dk), Alu / steel  5 mm  K 14  5.1  14 dk max  see source (grip per length)  —  no 6.4 mm large flange in the sheet\nWestfield large head (DIN 7337 based)  3.2 mm  —  3.3  9.5 flange d2 / 2.0 thick e  1.0 – 14  6 – 14  shear 740 / 1180 / 1540 N, tensile 980 / 1600 / 2230 N\nWestfield large head (DIN 7337 based)  4.0 mm  —  4.1  12.0 flange d2 / 2.5 thick e  0.5 – 15.5  6 – 20  shear 740 / 1180 / 1540 N, tensile 980 / 1600 / 2230 N\nWestfield large head (DIN 7337 based)  4.8 mm  —  4.9  14.0 flange d2 / 2.5 thick e  3.5 – 17  10 – 22  shear 740 / 1180 / 1540 N, tensile 980 / 1600 / 2230 N\nBlack Crow / Stanley AD8x dome (1/4 in)  1/4 in  84 (AD84)  .257 – .261 in (drill F)  .500 head dia / .073 height (Stanley, as read)  .063 – .250  .455 / .495 (Black Crow) / .490 under head (Stanley)  —\nBlack Crow / Stanley AD8x dome (1/4 in)  1/4 in  86 (AD86)  .257 – .261 in (drill F)  .500 head dia / .073 height (Stanley, as read)  .251 – .375  .580 / .620 (Black Crow) / .615 under head (Stanley)  —\nBlack Crow / Stanley AD8x dome (1/4 in)  1/4 in  88 (AD88)  .257 – .261 in (drill F)  .500 head dia / .073 height (Stanley, as read)  .376 – .500  .705 / .745 (Black Crow) / .740 under head (Stanley)  —\nBlack Crow / Stanley AD8x dome (1/4 in)  1/4 in  810 (AD810)  .257 – .261 in (drill F)  .500 head dia / .073 height (Stanley, as read)  .501 – .625  .830 / .870 (Black Crow) / .865 under head (Stanley)  —\nBlack Crow / Stanley AD8x dome (1/4 in)  1/4 in  812 (AD812)  .257 – .261 in (drill F)  .500 head dia / .073 height (Stanley, as read)  .626 – .750  .955 / .995 (Black Crow) / .990 under head (Stanley)  —\nBlack Crow / Stanley AD8x dome (1/4 in)  1/4 in  814 (AD814)  .257 – .261 in (drill F)  .500 head dia / .073 height (Stanley, as read)  .751 – .875  1.080 / 1.120 (Black Crow) / — under head (Stanley)  —\nBlack Crow / Stanley AD8x dome (1/4 in)  1/4 in  816 (AD816)  .257 – .261 in (drill F)  .500 head dia / .073 height (Stanley, as read)  .876 – 1.000 (Black Crow); .751 – 1.000 (Stanley AD816)  1.205 / 1.245 (Black Crow) / 1.240 under head (Stanley)  —\nOlympic Bulb-Tite 1/4 in countersunk (alu)  1/4 in  OLYRV660184  .250 – .263 in  .452 head dia / .147 height / body .246  .150 – .250  .815 max (blind-side protrusion F 1.005 max)  —\nOlympic Bulb-Tite 1/4 in dome, protruding crown  1/4 in  OLYRV660484  .250 – .263 in  .555 – .565 head dia / .118 height / body .246  .062 – .250  .815 max (F 1.005 max)  —\nOlympic Bulb-Tite 1/4 in dome, recessed crown  1/4 in  OLYRV660684  .250 – .263 in  .535 – .550 head dia / .116 height / body .246  .040 – .250  .815 max (F 1.005 max)  —\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Fortress (Steel & Tube NZ): Blind rivet domed and CSK head, all-aluminium spec sheet Oct 2024: 8-series 6.4 mm: hole, length, grip, head diameter and thickness, strength — web — Maker data sheet; numbers only — https://marketing.steelandtube.co.nz/hubfs/Website%20Catalogues/Fasteners/Fortress%20Blind%20Rivet%20DOMED%20&%20CSK%20HEAD%20-%20ALL%20ALUM%20Spec%20Sheet%20Oct%202024_web.pdf\n- GESIPA (via Shopify CDN): Standard blind rivets Alu / St: dome, countersunk 120° and large flange, 2.4 to 6.4 mm: hole, grip, part numbers, dm, dk — web — Maker data sheet; numbers only — https://cdn.shopify.com/s/files/1/0106/0555/9889/files/GESIPA_standard_blind_rivet_alu-st.pdf\n- Westfield Fasteners: Large head blind rivets (design based on DIN 7337): d1, length, grip, hole, flange d2 and thickness e, 3.2 to 4.8 mm — web — Publisher's page; dimensions are facts — https://www.westfieldfasteners.co.uk/Standards/BlindRivet-LargeFlgPlain.html\n- Black Crow Fasteners: Blind rivet reference guide: head types, drill number and hole size, trade sizes 84 to 816 (1/4 in) — web — Publisher's page; dimensions are facts — https://www.blackcrowfasteners.com/cs_wiki/wiki/50-blind-rivet-reference-guide\n- LA Fasteners (Stanley / POP catalogue): Pop rivets: 1/4 in dome head AD84 to AD816 (grip, length under head, head diameter and height); Bulb-Tite 1/4 in countersunk and dome (hole, body A, head height B, head D) — web — Distributor catalogue; numbers only — https://lafasteners.com/images/pdf/Rivets.pdf\n- McMaster-Carr: Blind (pop) rivets (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/pop-rivets/\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=blind-rivets-6-4mm-1-4in-csk-flange\n",
 "sources": [
  {
   "publisher": "Fortress (Steel & Tube NZ)",
   "title": "Blind rivet domed and CSK head, all-aluminium spec sheet Oct 2024: 8-series 6.4 mm: hole, length, grip, head diameter and thickness, strength",
   "url": "https://marketing.steelandtube.co.nz/hubfs/Website%20Catalogues/Fasteners/Fortress%20Blind%20Rivet%20DOMED%20&%20CSK%20HEAD%20-%20ALL%20ALUM%20Spec%20Sheet%20Oct%202024_web.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker data sheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "GESIPA (via Shopify CDN)",
   "title": "Standard blind rivets Alu / St: dome, countersunk 120° and large flange, 2.4 to 6.4 mm: hole, grip, part numbers, dm, dk",
   "url": "https://cdn.shopify.com/s/files/1/0106/0555/9889/files/GESIPA_standard_blind_rivet_alu-st.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker data sheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Westfield Fasteners",
   "title": "Large head blind rivets (design based on DIN 7337): d1, length, grip, hole, flange d2 and thickness e, 3.2 to 4.8 mm",
   "url": "https://www.westfieldfasteners.co.uk/Standards/BlindRivet-LargeFlgPlain.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Black Crow Fasteners",
   "title": "Blind rivet reference guide: head types, drill number and hole size, trade sizes 84 to 816 (1/4 in)",
   "url": "https://www.blackcrowfasteners.com/cs_wiki/wiki/50-blind-rivet-reference-guide",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "LA Fasteners (Stanley / POP catalogue)",
   "title": "Pop rivets: 1/4 in dome head AD84 to AD816 (grip, length under head, head diameter and height); Bulb-Tite 1/4 in countersunk and dome (hole, body A, head height B, head D)",
   "url": "https://lafasteners.com/images/pdf/Rivets.pdf",
   "formats": [
    "web"
   ],
   "license": "Distributor catalogue; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Blind (pop) rivets (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/pop-rivets/",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "blind-pop-rivets-dome-head",
  "rivet-nuts-flat-head",
  "solid-rivets-din-660-661-asme-b18-1-1",
  "socket-head-cap-screws-metric",
  "ribbed-plastic-expansion-anchors"
 ],
 "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": [],
 "faq": [
  {
   "q": "What size hole for a 6.4 mm pop rivet?",
   "a": "6.5 mm (GESIPA) or 6.5 – 6.6 mm (Fortress)."
  },
  {
   "q": "What drill for a 1/4 in pop rivet?",
   "a": "Drill F; hole .257 – .261 in (Black Crow), i.e. 6.53 – 6.63 mm."
  },
  {
   "q": "How big is the head of a 6.4 mm blind rivet?",
   "a": "12.07 – 13.34 mm across by 2.03 mm thick (Fortress); GESIPA gives 13.0 mm max for the setting head."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/blind-rivets-6-4mm-1-4in-csk-flange/index.md"
}