{
 "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": "washers-clevis-pins-din-1440",
 "name": "Washers for clevis pins, DIN 1440: 3–32 mm pin bore, outside diameter, thickness",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What outside diameter and thickness does a DIN 1440 washer for clevis pins have, for pins 3 to 32 mm?",
 "tags": [
  "din 1440",
  "clevis pin washer",
  "pin washer",
  "bolt washer",
  "washer for bolts",
  "iso 8738"
 ],
 "aliases": [
  "din 1440 dimensions",
  "clevis pin washer 10 mm",
  "washer for 12 mm pin",
  "din 1440 20 mm",
  "pin washer outside diameter"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 17,
 "url": "https://xemstudio.com/objects/washers-clevis-pins-din-1440/",
 "sheet_txt": "https://xemstudio.com/objects/washers-clevis-pins-din-1440/sheet.txt",
 "sheet": {
  "basis": "McMaster-Carr's DIN 1440 table (d1, d2, s), cross-checked size by size against ehorst plus Keller & Kalmbach, Würth, Galaxus and Dinmark listings",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Columns: pin diameter (= bore d1), outside diameter d2, thickness s. These are the DIN 1440 sizes as sold; the replacement ISO 8738 (DIN EN 28738) uses smaller outside diameters for several sizes (e.g. 12 mm pin: 20 instead of 25), so the two are not interchangeable.",
   "Pin 7, 24 and sizes above 32 are omitted (single source or conflicting values). Edges drawn sharp."
  ],
  "table": {
   "columns": [
    "pin",
    "d1",
    "d2",
    "s"
   ],
   "rows": [
    [
     "3",
     "3",
     "6",
     "0.8"
    ],
    [
     "4",
     "4",
     "8",
     "0.8"
    ],
    [
     "5",
     "5",
     "10",
     "0.8"
    ],
    [
     "6",
     "6",
     "12",
     "1.6"
    ],
    [
     "8",
     "8",
     "16",
     "2"
    ],
    [
     "10",
     "10",
     "20",
     "2.5"
    ],
    [
     "12",
     "12",
     "25",
     "3"
    ],
    [
     "14",
     "14",
     "28",
     "3"
    ],
    [
     "16",
     "16",
     "28",
     "3"
    ],
    [
     "18",
     "18",
     "30",
     "4"
    ],
    [
     "20",
     "20",
     "32",
     "4"
    ],
    [
     "22",
     "22",
     "34",
     "4"
    ],
    [
     "25",
     "25",
     "40",
     "4"
    ],
    [
     "26",
     "26",
     "40",
     "5"
    ],
    [
     "28",
     "28",
     "42",
     "5"
    ],
    [
     "30",
     "30",
     "45",
     "5"
    ],
    [
     "32",
     "32",
     "50",
     "5"
    ]
   ]
  }
 },
 "sheet_text": "Washers for clevis pins, DIN 1440: 3–32 mm pin bore, outside diameter, thickness — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/washers-clevis-pins-din-1440/  (sheet CC BY 4.0)\nBasis: McMaster-Carr's DIN 1440 table (d1, d2, s), cross-checked size by size against ehorst plus Keller & Kalmbach, Würth, Galaxus and Dinmark listings\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Columns: pin diameter (= bore d1), outside diameter d2, thickness s. These are the DIN 1440 sizes as sold; the replacement ISO 8738 (DIN EN 28738) uses smaller outside diameters for several sizes (e.g. 12 mm pin: 20 instead of 25), so the two are not interchangeable.\n- Pin 7, 24 and sizes above 32 are omitted (single source or conflicting values). Edges drawn sharp.\n\npin  d1  d2  s\n3  3  6  0.8\n4  4  8  0.8\n5  5  10  0.8\n6  6  12  1.6\n8  8  16  2\n10  10  20  2.5\n12  12  25  3\n14  14  28  3\n16  16  28  3\n18  18  30  4\n20  20  32  4\n22  22  34  4\n25  25  40  4\n26  26  40  5\n28  28  42  5\n30  30  45  5\n32  32  50  5\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- McMaster-Carr: DIN 1440 washers for clevis pins: ID, OD, thickness — web — Publisher's page; dimensions are facts — https://www.mcmaster.com/products/washers/specifications-met~din-1440/\n- ehorst: Washer DIN 1440 for 8 mm pins — web — Publisher's page; dimensions are facts — https://www.ehorst.de/en/Washer-DIN-1440-8-mm-raw-1523968.html\n- Keller & Kalmbach: Washer DIN 1440 for 12 mm pins — web — Publisher's page; dimensions are facts — https://www.keller-kalmbach.de/p/20144012/pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 17 parts): https://xemstudio.com/files/hardware/washers-clevis-pins-din-1440/index.json\nAPI: https://xemstudio.com/api/geometry?object=washers-clevis-pins-din-1440\n",
 "sources": [
  {
   "publisher": "McMaster-Carr",
   "title": "DIN 1440 washers for clevis pins: ID, OD, thickness",
   "url": "https://www.mcmaster.com/products/washers/specifications-met~din-1440/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "ehorst",
   "title": "Washer DIN 1440 for 8 mm pins",
   "url": "https://www.ehorst.de/en/Washer-DIN-1440-8-mm-raw-1523968.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Keller & Kalmbach",
   "title": "Washer DIN 1440 for 12 mm pins",
   "url": "https://www.keller-kalmbach.de/p/20144012/pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
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  "tolerance_mm": null
 },
 "related": [
  "clevis-pins-iso-2341",
  "split-pins-iso-1234",
  "r-clips-hairpin-cotters-din-11024",
  "clevis-pins"
 ],
 "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",
   "exact": "d1 = pin diameter (3 to 32)",
   "mates": "clevis pin ISO 2341 / DIN 1444 of the same diameter",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "outer face",
   "exact": "Ø d2 (12 mm pin 25, 20 mm pin 32)",
   "mates": "split pin (ISO 1234) or R-clip behind it",
   "fit": "designed",
   "files": "all"
  }
 ],
 "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 washer goes on a 10 mm clevis pin?",
   "a": "DIN 1440 10: 10 mm bore, 20 mm outside, 2.5 mm thick."
  },
  {
   "q": "Is DIN 1440 the same as ISO 8738?",
   "a": "No. ISO 8738 replaced DIN 1440 with smaller outside diameters for several sizes (12 mm pin: 20 mm instead of 25), so check which one a drawing calls for."
  }
 ],
 "files_license": null,
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   "note": "DIN 1440 d3: 3 × Ø6 × 0.8"
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   "stl": "https://xemstudio.com/files/hardware/washers-clevis-pins-din-1440/din1440-d4.stl",
   "note": "DIN 1440 d4: 4 × Ø8 × 0.8"
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   "note": "DIN 1440 d5: 5 × Ø10 × 0.8"
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   "note": "DIN 1440 d6: 6 × Ø12 × 1.6"
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   "note": "DIN 1440 d16: 16 × Ø28 × 3"
  },
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   "note": "DIN 1440 d18: 18 × Ø30 × 4"
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  {
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   "note": "DIN 1440 d20: 20 × Ø32 × 4"
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   "stl": "https://xemstudio.com/files/hardware/washers-clevis-pins-din-1440/din1440-d22.stl",
   "note": "DIN 1440 d22: 22 × Ø34 × 4"
  },
  {
   "file": "din1440-d25",
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   "note": "DIN 1440 d25: 25 × Ø40 × 4"
  },
  {
   "file": "din1440-d26",
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   "stl": "https://xemstudio.com/files/hardware/washers-clevis-pins-din-1440/din1440-d26.stl",
   "note": "DIN 1440 d26: 26 × Ø40 × 5"
  },
  {
   "file": "din1440-d28",
   "formats": [
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/washers-clevis-pins-din-1440/din1440-d28.stl",
   "note": "DIN 1440 d28: 28 × Ø42 × 5"
  },
  {
   "file": "din1440-d30",
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   "stl": "https://xemstudio.com/files/hardware/washers-clevis-pins-din-1440/din1440-d30.stl",
   "note": "DIN 1440 d30: 30 × Ø45 × 5"
  },
  {
   "file": "din1440-d32",
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/washers-clevis-pins-din-1440/din1440-d32.stl",
   "note": "DIN 1440 d32: 32 × Ø50 × 5"
  }
 ],
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}