{
 "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": "coupling-nuts-din-6334-and-inch",
 "name": "Coupling nuts / long hex nuts: DIN 6334 M8–M36 (height 3 d) and inch rod coupling nuts 1/4 to 1 in — across flats, length + M8–M36 envelope models",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the dimensions of a DIN 6334 long hex nut, and how long is a 3/8-16 coupling nut?",
 "tags": [
  "coupling nut",
  "long nut",
  "extension nut",
  "rod coupler",
  "din 6334",
  "threaded rod coupler",
  "hex coupling nut",
  "fastener"
 ],
 "aliases": [
  "din 6334 dimensions",
  "m10 long nut dimensions",
  "m12 long hex nut 36 mm",
  "coupling nut dimensions",
  "3/8-16 coupling nut length",
  "1/2-13 coupling nut dimensions",
  "threaded rod coupling nut size",
  "m8 coupling nut 24 mm",
  "din 6334 m16",
  "long hex nut 3d",
  "rod coupling nut across flats",
  "din 6334 stl"
 ],
 "overall_mm": {
  "length": 15,
  "width": 13,
  "height": 24
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 8,
 "url": "https://xemstudio.com/objects/coupling-nuts-din-6334-and-inch/",
 "sheet_txt": "https://xemstudio.com/objects/coupling-nuts-din-6334-and-inch/sheet.txt",
 "sheet": {
  "basis": "dinmark's DIN 6334 table (checked at M12 against a Wuerth listing); two inch coupling-nut tables (American Fastener and Alma Bolt) that disagree and are shown side by side; eight DIN 6334 envelope models as files",
  "overall_mm": {
   "length": 15,
   "width": 13,
   "height": 24
  },
  "notes": [
   "DIN 6334 is the hexagon nut with a height of 3 × d (a long nut, used to join two threaded rods or studs, or as a spacer / tensioner). dinmark's table, M8 to M36, gives pitch (coarse), width across flats s and height m (m = 3 d: 24 for M8, 30 for M10, 36 for M12, 48 for M16, 60 for M20, 72 for M24, 90 for M30, 108 for M36). The page prints no width across corners. A Wuerth listing for the M12 nut (WN 6334, steel class 8) prints height 36 mm, width across corners 21.1 mm and a wrench size WS19; that is the only second source read, and it matches dinmark's s 19 and m 36. M6 and the 1.5 d version are not on this page.",
   "Inch coupling nuts: no standard is cited by either source. American Fastener's sheet (1/4 to 1 in) and Alma Bolt's rod coupling nut table (1/4-20 to 1-8) agree on the hex size for 1/4 (3/8 across flats), 5/16 (1/2) and, for the shorter 3/8 nut, but disagree elsewhere. Length of the 1/4 nut: 3/4 in (American Fastener) against 7/8 in (Alma). 3/8: American Fastener 9/16 across flats × 1-1/8 long; Alma lists 1/2 × 1-1/8 and 9/16 × 1-3/4. 1/2: 3/4 × 1-1/2 against 11/16 × 1-3/4. 5/8: 15/16 × 1-7/8 against 13/16 × 2-1/8. 3/4: 1-1/8 × 2-1/4 against 1 × 2-1/4. 1: 1-1/2 × 3 against 1-3/8 × 2-3/4. Alma also lists a second 5/16 nut (1-1/8 long, against 7/8 and American Fastener's 15/16). Both sets are shown; no inch file is drawn because the dimensions are not settled. Alma's source text lists the last size as '1/8', read as 1-8.",
   "Files are Xem-drawn envelopes of DIN 6334: a hexagon at the published width across flats and height 3 d with a plain bore at the thread major diameter (the real thread is smaller); no chamfers on the corners or faces. Hexagon corners are across-flats / cos 30°.",
   "McMaster-Carr sells coupling nuts (inch and reducing) with per-part STEP; its Grade 2 steel coupling-nut page is linked, not copied. Standard hex nuts: hex-nuts-metric, hex-nuts-inch."
  ],
  "table": {
   "columns": [
    "standard / source",
    "size",
    "pitch",
    "width across flats",
    "width across corners",
    "length / height",
    "note"
   ],
   "rows": [
    [
     "DIN 6334 (dinmark)",
     "M8",
     "1.25 mm",
     "13 mm",
     "—",
     "24 mm (= 3 d)",
     "—"
    ],
    [
     "DIN 6334 (dinmark)",
     "M10",
     "1.5 mm",
     "17 mm",
     "—",
     "30 mm (= 3 d)",
     "—"
    ],
    [
     "DIN 6334 (dinmark)",
     "M12",
     "1.75 mm",
     "19 mm",
     "—",
     "36 mm (= 3 d)",
     "—"
    ],
    [
     "DIN 6334 (dinmark)",
     "M16",
     "2 mm",
     "24 mm",
     "—",
     "48 mm (= 3 d)",
     "—"
    ],
    [
     "DIN 6334 (dinmark)",
     "M20",
     "2.5 mm",
     "30 mm",
     "—",
     "60 mm (= 3 d)",
     "—"
    ],
    [
     "DIN 6334 (dinmark)",
     "M24",
     "3 mm",
     "36 mm",
     "—",
     "72 mm (= 3 d)",
     "—"
    ],
    [
     "DIN 6334 (dinmark)",
     "M30",
     "3.5 mm",
     "46 mm",
     "—",
     "90 mm (= 3 d)",
     "—"
    ],
    [
     "DIN 6334 (dinmark)",
     "M36",
     "4 mm",
     "55 mm",
     "—",
     "108 mm (= 3 d)",
     "—"
    ],
    [
     "inch, American Fastener (no standard cited)",
     "1/4",
     "—",
     "3/8 in (0.375 / 0.365)",
     "0.433 / 0.416 in",
     "3/4 in (0.76 / 0.74)",
     "—"
    ],
    [
     "inch, American Fastener (no standard cited)",
     "5/16",
     "—",
     "1/2 in (0.500 / 0.489)",
     "0.577 / 0.557 in",
     "15/16 in (0.95 / 0.93)",
     "—"
    ],
    [
     "inch, American Fastener (no standard cited)",
     "3/8",
     "—",
     "9/16 in (0.562 / 0.551)",
     "0.650 / 0.628 in",
     "1-1/8 in (1.13 / 1.11)",
     "—"
    ],
    [
     "inch, American Fastener (no standard cited)",
     "1/2",
     "—",
     "3/4 in (0.750 / 0.736)",
     "0.866 / 0.839 in",
     "1-1/2 in (1.51 / 1.49)",
     "—"
    ],
    [
     "inch, American Fastener (no standard cited)",
     "5/8",
     "—",
     "15/16 in (0.938 / 0.922)",
     "1.083 / 1.051 in",
     "1-7/8 in (1.89 / 1.86)",
     "—"
    ],
    [
     "inch, American Fastener (no standard cited)",
     "3/4",
     "—",
     "1-1/8 in (1.125 / 1.088)",
     "1.299 / 1.240 in",
     "2-1/4 in (2.27 / 2.22)",
     "—"
    ],
    [
     "inch, American Fastener (no standard cited)",
     "1",
     "—",
     "1-1/2 in (1.500 / 1.450)",
     "1.732 / 1.653 in",
     "3 in (3.03 / 2.97)",
     "—"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "1/4-20",
     "coarse as named",
     "3/8 in (0.375 / 0.365)",
     "0.433 / 0.416 in",
     "7/8 in (0.89 / 0.86)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "5/16-18",
     "coarse as named",
     "1/2 in (0.500 / 0.489)",
     "0.577 / 0.557 in",
     "7/8 in (0.89 / 0.86)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "5/16-18",
     "coarse as named",
     "1/2 in (0.500 / 0.489)",
     "0.577 / 0.557 in",
     "1-1/8 in (1.13 / 1.11)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "3/8-16",
     "coarse as named",
     "1/2 in (0.500 / 0.489)",
     "0.577 / 0.557 in",
     "1-1/8 in (1.13 / 1.11)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "3/8-16",
     "coarse as named",
     "9/16 in (0.562 / 0.551)",
     "0.650 / 0.628 in",
     "1-3/4 in (1.76 / 1.73)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "1/2-13",
     "coarse as named",
     "11/16 in (0.688 / 0.663)",
     "0.794 / 0.756 in",
     "1-3/4 in (1.76 / 1.73)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "5/8-11",
     "coarse as named",
     "13/16 in (0.813 / 0.782)",
     "0.939 / 0.891 in",
     "2-1/8 in (2.14 / 2.10)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "3/4-10",
     "coarse as named",
     "1 in (1.000 / 0.963)",
     "1.155 / 1.097 in",
     "2-1/4 in (2.27 / 2.22)",
     "differs from American Fastener at several sizes"
    ],
    [
     "inch, Alma Bolt (no standard cited)",
     "1-8",
     "coarse as named",
     "1-3/8 in (1.375 / 1.325)",
     "1.588 / 1.511 in",
     "2-3/4 in (2.78 / 2.72)",
     "differs from American Fastener at several sizes"
    ]
   ]
  }
 },
 "sheet_text": "Coupling nuts / long hex nuts: DIN 6334 M8–M36 (height 3 d) and inch rod coupling nuts 1/4 to 1 in — across flats, length + M8–M36 envelope models — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/coupling-nuts-din-6334-and-inch/  (sheet CC BY 4.0)\nBasis: dinmark's DIN 6334 table (checked at M12 against a Wuerth listing); two inch coupling-nut tables (American Fastener and Alma Bolt) that disagree and are shown side by side; eight DIN 6334 envelope models as files\nCatalog version: 2026-10-20\n\nOverall (mm): length 15.0, width 13.0, height 24.0\n- DIN 6334 is the hexagon nut with a height of 3 × d (a long nut, used to join two threaded rods or studs, or as a spacer / tensioner). dinmark's table, M8 to M36, gives pitch (coarse), width across flats s and height m (m = 3 d: 24 for M8, 30 for M10, 36 for M12, 48 for M16, 60 for M20, 72 for M24, 90 for M30, 108 for M36). The page prints no width across corners. A Wuerth listing for the M12 nut (WN 6334, steel class 8) prints height 36 mm, width across corners 21.1 mm and a wrench size WS19; that is the only second source read, and it matches dinmark's s 19 and m 36. M6 and the 1.5 d version are not on this page.\n- Inch coupling nuts: no standard is cited by either source. American Fastener's sheet (1/4 to 1 in) and Alma Bolt's rod coupling nut table (1/4-20 to 1-8) agree on the hex size for 1/4 (3/8 across flats), 5/16 (1/2) and, for the shorter 3/8 nut, but disagree elsewhere. Length of the 1/4 nut: 3/4 in (American Fastener) against 7/8 in (Alma). 3/8: American Fastener 9/16 across flats × 1-1/8 long; Alma lists 1/2 × 1-1/8 and 9/16 × 1-3/4. 1/2: 3/4 × 1-1/2 against 11/16 × 1-3/4. 5/8: 15/16 × 1-7/8 against 13/16 × 2-1/8. 3/4: 1-1/8 × 2-1/4 against 1 × 2-1/4. 1: 1-1/2 × 3 against 1-3/8 × 2-3/4. Alma also lists a second 5/16 nut (1-1/8 long, against 7/8 and American Fastener's 15/16). Both sets are shown; no inch file is drawn because the dimensions are not settled. Alma's source text lists the last size as '1/8', read as 1-8.\n- Files are Xem-drawn envelopes of DIN 6334: a hexagon at the published width across flats and height 3 d with a plain bore at the thread major diameter (the real thread is smaller); no chamfers on the corners or faces. Hexagon corners are across-flats / cos 30°.\n- McMaster-Carr sells coupling nuts (inch and reducing) with per-part STEP; its Grade 2 steel coupling-nut page is linked, not copied. Standard hex nuts: hex-nuts-metric, hex-nuts-inch.\n\nstandard / source  size  pitch  width across flats  width across corners  length / height  note\nDIN 6334 (dinmark)  M8  1.25 mm  13 mm  —  24 mm (= 3 d)  —\nDIN 6334 (dinmark)  M10  1.5 mm  17 mm  —  30 mm (= 3 d)  —\nDIN 6334 (dinmark)  M12  1.75 mm  19 mm  —  36 mm (= 3 d)  —\nDIN 6334 (dinmark)  M16  2 mm  24 mm  —  48 mm (= 3 d)  —\nDIN 6334 (dinmark)  M20  2.5 mm  30 mm  —  60 mm (= 3 d)  —\nDIN 6334 (dinmark)  M24  3 mm  36 mm  —  72 mm (= 3 d)  —\nDIN 6334 (dinmark)  M30  3.5 mm  46 mm  —  90 mm (= 3 d)  —\nDIN 6334 (dinmark)  M36  4 mm  55 mm  —  108 mm (= 3 d)  —\ninch, American Fastener (no standard cited)  1/4  —  3/8 in (0.375 / 0.365)  0.433 / 0.416 in  3/4 in (0.76 / 0.74)  —\ninch, American Fastener (no standard cited)  5/16  —  1/2 in (0.500 / 0.489)  0.577 / 0.557 in  15/16 in (0.95 / 0.93)  —\ninch, American Fastener (no standard cited)  3/8  —  9/16 in (0.562 / 0.551)  0.650 / 0.628 in  1-1/8 in (1.13 / 1.11)  —\ninch, American Fastener (no standard cited)  1/2  —  3/4 in (0.750 / 0.736)  0.866 / 0.839 in  1-1/2 in (1.51 / 1.49)  —\ninch, American Fastener (no standard cited)  5/8  —  15/16 in (0.938 / 0.922)  1.083 / 1.051 in  1-7/8 in (1.89 / 1.86)  —\ninch, American Fastener (no standard cited)  3/4  —  1-1/8 in (1.125 / 1.088)  1.299 / 1.240 in  2-1/4 in (2.27 / 2.22)  —\ninch, American Fastener (no standard cited)  1  —  1-1/2 in (1.500 / 1.450)  1.732 / 1.653 in  3 in (3.03 / 2.97)  —\ninch, Alma Bolt (no standard cited)  1/4-20  coarse as named  3/8 in (0.375 / 0.365)  0.433 / 0.416 in  7/8 in (0.89 / 0.86)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  5/16-18  coarse as named  1/2 in (0.500 / 0.489)  0.577 / 0.557 in  7/8 in (0.89 / 0.86)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  5/16-18  coarse as named  1/2 in (0.500 / 0.489)  0.577 / 0.557 in  1-1/8 in (1.13 / 1.11)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  3/8-16  coarse as named  1/2 in (0.500 / 0.489)  0.577 / 0.557 in  1-1/8 in (1.13 / 1.11)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  3/8-16  coarse as named  9/16 in (0.562 / 0.551)  0.650 / 0.628 in  1-3/4 in (1.76 / 1.73)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  1/2-13  coarse as named  11/16 in (0.688 / 0.663)  0.794 / 0.756 in  1-3/4 in (1.76 / 1.73)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  5/8-11  coarse as named  13/16 in (0.813 / 0.782)  0.939 / 0.891 in  2-1/8 in (2.14 / 2.10)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  3/4-10  coarse as named  1 in (1.000 / 0.963)  1.155 / 1.097 in  2-1/4 in (2.27 / 2.22)  differs from American Fastener at several sizes\ninch, Alma Bolt (no standard cited)  1-8  coarse as named  1-3/8 in (1.375 / 1.325)  1.588 / 1.511 in  2-3/4 in (2.78 / 2.72)  differs from American Fastener at several sizes\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- dinmark: DIN 6334 high hexagon nut: thread, pitch, s (across flats), m (height) M8 to M36 — web — Distributor page; numbers only — https://dinmark.com.ua/en/shop/hayky/hayky-shestyhranni/din-6334-hayka-vysoka-shestyhranna/din-6334-10-hayka-vysoka-shestyhranna\n- Wuerth: Hexagonal nut 3 x d high WN 6334, M12: height 36, width across corners 21.1, wrench size WS19 — web — Maker shop page; numbers only — https://eshop.wuerth-ag.ch/Hexagonal-nut-3xd-high-WN-6334-steel-8-plain-NUT-HEX-WN6334-8-WS19-M12/5140112.sku/en/US/CHF\n- American Fastener: Hex coupling nuts: nominal size, width across flats and corners, length (basic / max / min), 1/4 to 1 (no standard cited) — web — Maker data sheet; numbers only — https://www.americanfastener.com/wp-content/uploads/2020/06/NUTS-HEX-COUPLING-AMERICAN-FASTENER.pdf\n- Alma Bolt: Rod coupling nuts (hex coupling nuts): size, major diameter, across flats / corners, length (basic / max / min), 1/4-20 to 1-8 (no standard cited) — web — Distributor catalog; numbers only — https://almabolt.com/pages/catalog/nuts/coupling.htm\n- McMaster-Carr: Grade 2 steel coupling nuts (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/grade-2-steel-coupling-nuts/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 8 parts): https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/index.json\nAPI: https://xemstudio.com/api/geometry?object=coupling-nuts-din-6334-and-inch\n",
 "sources": [
  {
   "publisher": "dinmark",
   "title": "DIN 6334 high hexagon nut: thread, pitch, s (across flats), m (height) M8 to M36",
   "url": "https://dinmark.com.ua/en/shop/hayky/hayky-shestyhranni/din-6334-hayka-vysoka-shestyhranna/din-6334-10-hayka-vysoka-shestyhranna",
   "formats": [
    "web"
   ],
   "license": "Distributor page; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Wuerth",
   "title": "Hexagonal nut 3 x d high WN 6334, M12: height 36, width across corners 21.1, wrench size WS19",
   "url": "https://eshop.wuerth-ag.ch/Hexagonal-nut-3xd-high-WN-6334-steel-8-plain-NUT-HEX-WN6334-8-WS19-M12/5140112.sku/en/US/CHF",
   "formats": [
    "web"
   ],
   "license": "Maker shop page; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "American Fastener",
   "title": "Hex coupling nuts: nominal size, width across flats and corners, length (basic / max / min), 1/4 to 1 (no standard cited)",
   "url": "https://www.americanfastener.com/wp-content/uploads/2020/06/NUTS-HEX-COUPLING-AMERICAN-FASTENER.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker data sheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Alma Bolt",
   "title": "Rod coupling nuts (hex coupling nuts): size, major diameter, across flats / corners, length (basic / max / min), 1/4-20 to 1-8 (no standard cited)",
   "url": "https://almabolt.com/pages/catalog/nuts/coupling.htm",
   "formats": [
    "web"
   ],
   "license": "Distributor catalog; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Grade 2 steel coupling nuts (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/grade-2-steel-coupling-nuts/",
   "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": [
  "hex-nuts-metric",
  "hex-nuts-metric-m10-m24",
  "hex-nuts-inch",
  "slotted-castle-nuts-din-935",
  "threaded-rod-metric-din-976",
  "threaded-rod-inch-unc-unf-sizes",
  "threaded-rods-metric",
  "eye-nuts-din-582"
 ],
 "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": "bore (thread as plain cylinder)",
   "exact": "thread major diameter M8 to M36: Ø8 … Ø36 mm",
   "mates": "threaded rod or stud of the same thread (plain cylinder at the major Ø)",
   "fit": "designed",
   "files": "din-6334-"
  },
  {
   "feature": "hex body",
   "exact": "s across flats × height 3 d: M8 13 × 24, M10 17 × 30, M12 19 × 36, M16 24 × 48, M20 30 × 60, M24 36 × 72, M30 46 × 90, M36 55 × 108 mm",
   "mates": "hex pocket capturing the nut: width = s, depth = height",
   "fit": "slide",
   "files": "din-6334-"
  }
 ],
 "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": "How long is an M10 DIN 6334 nut?",
   "a": "30 mm (3 × d) and 17 mm across flats, per dinmark's DIN 6334 table."
  },
  {
   "q": "How long is a 1/2-13 coupling nut?",
   "a": "The two inch tables read disagree: 1-1/2 in long and 3/4 in across flats (American Fastener) or 1-3/4 in long and 11/16 in across flats (Alma Bolt). Check the nut you buy."
  },
  {
   "q": "What wrench fits an M12 DIN 6334 nut?",
   "a": "19 mm across flats (dinmark and Wuerth WS19); the nut is 36 mm long."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "din-6334-m8-long-hex-nut-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m8-long-hex-nut-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m8-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M8 long hexagon nut envelope: hex 13 mm across flats × 24 mm high (3 × d), bore Ø8 (thread major diameter as a plain cylinder); no chamfers, no thread"
  },
  {
   "file": "din-6334-m10-long-hex-nut-envelope",
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   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m10-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M10 long hexagon nut envelope: hex 17 mm across flats × 30 mm high (3 × d), bore Ø10 (thread major diameter as a plain cylinder); no chamfers, no thread"
  },
  {
   "file": "din-6334-m12-long-hex-nut-envelope",
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   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m12-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M12 long hexagon nut envelope: hex 19 mm across flats × 36 mm high (3 × d), bore Ø12 (thread major diameter as a plain cylinder); no chamfers, no thread"
  },
  {
   "file": "din-6334-m16-long-hex-nut-envelope",
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   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m16-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M16 long hexagon nut envelope: hex 24 mm across flats × 48 mm high (3 × d), bore Ø16 (thread major diameter as a plain cylinder); no chamfers, no thread"
  },
  {
   "file": "din-6334-m20-long-hex-nut-envelope",
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   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m20-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M20 long hexagon nut envelope: hex 30 mm across flats × 60 mm high (3 × d), bore Ø20 (thread major diameter as a plain cylinder); no chamfers, no thread"
  },
  {
   "file": "din-6334-m24-long-hex-nut-envelope",
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   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m24-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M24 long hexagon nut envelope: hex 36 mm across flats × 72 mm high (3 × d), bore Ø24 (thread major diameter as a plain cylinder); no chamfers, no thread"
  },
  {
   "file": "din-6334-m30-long-hex-nut-envelope",
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   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m30-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M30 long hexagon nut envelope: hex 46 mm across flats × 90 mm high (3 × d), bore Ø30 (thread major diameter as a plain cylinder); no chamfers, no thread"
  },
  {
   "file": "din-6334-m36-long-hex-nut-envelope",
   "formats": [
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   "stl": "https://xemstudio.com/files/hardware/coupling-nuts-din-6334-and-inch/din-6334-m36-long-hex-nut-envelope.stl",
   "note": "DIN 6334 M36 long hexagon nut envelope: hex 55 mm across flats × 108 mm high (3 × d), bore Ø36 (thread major diameter as a plain cylinder); no chamfers, no thread"
  }
 ],
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