{
 "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-clamping-fixtures-din-6340",
 "name": "Washers for clamping fixtures, DIN 6340: M6–M30 bore, outside diameter, thickness",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What bore, outside diameter and thickness does a DIN 6340 washer for clamping fixtures have for M6 to M30?",
 "tags": [
  "din 6340",
  "fixture washer",
  "clamping washer",
  "hardened washer",
  "jig washer",
  "fixture"
 ],
 "aliases": [
  "din 6340 dimensions",
  "fixture washer m12 35 mm",
  "clamping washer m10",
  "din 6340 m16 thickness",
  "hardened jig washer m8"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 8,
 "url": "https://xemstudio.com/objects/washers-clamping-fixtures-din-6340/",
 "sheet_txt": "https://xemstudio.com/objects/washers-clamping-fixtures-din-6340/sheet.txt",
 "sheet": {
  "basis": "Halder and norelem DIN 6340 tables (d1, d2, h), cross-checked against Ganter, Würth, Kramp and AMF / Hoffmann; every row agrees in at least three sources",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Columns: thread, bore d1, outside diameter d2, thickness h (edition 1987-04). Hardened and ground in practice.",
   "Manufacturers disagree on whether the edges are broken and none gives a size, so edges are drawn sharp."
  ],
  "table": {
   "columns": [
    "thread",
    "d1",
    "d2",
    "h"
   ],
   "rows": [
    [
     "M6",
     "6.4",
     "17",
     "3"
    ],
    [
     "M8",
     "8.4",
     "23",
     "4"
    ],
    [
     "M10",
     "10.5",
     "28",
     "4"
    ],
    [
     "M12",
     "13",
     "35",
     "5"
    ],
    [
     "M16",
     "17",
     "45",
     "6"
    ],
    [
     "M20",
     "21",
     "50",
     "6"
    ],
    [
     "M24",
     "25",
     "60",
     "8"
    ],
    [
     "M30",
     "31",
     "68",
     "10"
    ]
   ]
  }
 },
 "sheet_text": "Washers for clamping fixtures, DIN 6340: M6–M30 bore, outside diameter, thickness — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/washers-clamping-fixtures-din-6340/  (sheet CC BY 4.0)\nBasis: Halder and norelem DIN 6340 tables (d1, d2, h), cross-checked against Ganter, Würth, Kramp and AMF / Hoffmann; every row agrees in at least three sources\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Columns: thread, bore d1, outside diameter d2, thickness h (edition 1987-04). Hardened and ground in practice.\n- Manufacturers disagree on whether the edges are broken and none gives a size, so edges are drawn sharp.\n\nthread  d1  d2  h\nM6  6.4  17  3\nM8  8.4  23  4\nM10  10.5  28  4\nM12  13  35  5\nM16  17  45  6\nM20  21  50  6\nM24  25  60  8\nM30  31  68  10\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Halder: Washers DIN 6340, EH 23060 — web — Publisher's page; dimensions are facts — https://halder.com/at/file-download/object_file_dsag_eh23060_1_de\n- norelem (via Marek): Washers for clamping fixtures DIN 6340 (07320) — web — Publisher's page; dimensions are facts — https://www.marek.eu/en/norelem-clamping-technology-standard-elements-operating-parts/flexible-standard-component-system/fastening-elements/fasteners-connecting-elements/24904/washers-for-clamping-fixtures-steel-or-aluminium-din-6340.html\n- Kramp: Washer M30 × 68 × 10 DIN 6340 — web — Publisher's page; dimensions are facts — https://kramp.com/shop-ro/en/p/washer-m30x68x10mm-steel-zinc-plated-din-6340-kramp--634030\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 8 parts): https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/index.json\nAPI: https://xemstudio.com/api/geometry?object=washers-clamping-fixtures-din-6340\n",
 "sources": [
  {
   "publisher": "Halder",
   "title": "Washers DIN 6340, EH 23060",
   "url": "https://halder.com/at/file-download/object_file_dsag_eh23060_1_de",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "norelem (via Marek)",
   "title": "Washers for clamping fixtures DIN 6340 (07320)",
   "url": "https://www.marek.eu/en/norelem-clamping-technology-standard-elements-operating-parts/flexible-standard-component-system/fastening-elements/fasteners-connecting-elements/24904/washers-for-clamping-fixtures-steel-or-aluminium-din-6340.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Kramp",
   "title": "Washer M30 × 68 × 10 DIN 6340",
   "url": "https://kramp.com/shop-ro/en/p/washer-m30x68x10mm-steel-zinc-plated-din-6340-kramp--634030",
   "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,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "hex-nuts-collar-din-6331",
  "t-slot-nuts-din-508",
  "spherical-washers-din-6319-c",
  "thick-washers-din-7349"
 ],
 "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 (M12 13, M20 21)",
   "mates": "stud or clamping bolt of the listed thread",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "faces",
   "exact": "Ø d2 × h (M12 35 × 5)",
   "mates": "clamp strap and collar nut (DIN 6331)",
   "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 size is an M12 DIN 6340 washer?",
   "a": "13 mm bore, 35 mm outside, 5 mm thick."
  },
  {
   "q": "Why use DIN 6340 instead of a normal washer on a fixture?",
   "a": "It is thicker and usually hardened, so it does not dish under repeated clamping with T-slot nuts and studs."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "din6340-m6",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m6.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m6.stl",
   "note": "DIN 6340 M6: 6.4 × Ø17 × 3"
  },
  {
   "file": "din6340-m8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m8.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m8.stl",
   "note": "DIN 6340 M8: 8.4 × Ø23 × 4"
  },
  {
   "file": "din6340-m10",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m10.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m10.stl",
   "note": "DIN 6340 M10: 10.5 × Ø28 × 4"
  },
  {
   "file": "din6340-m12",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m12.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m12.stl",
   "note": "DIN 6340 M12: 13 × Ø35 × 5"
  },
  {
   "file": "din6340-m16",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m16.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m16.stl",
   "note": "DIN 6340 M16: 17 × Ø45 × 6"
  },
  {
   "file": "din6340-m20",
   "formats": [
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    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m20.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m20.stl",
   "note": "DIN 6340 M20: 21 × Ø50 × 6"
  },
  {
   "file": "din6340-m24",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m24.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m24.stl",
   "note": "DIN 6340 M24: 25 × Ø60 × 8"
  },
  {
   "file": "din6340-m30",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m30.step",
   "stl": "https://xemstudio.com/files/hardware/washers-clamping-fixtures-din-6340/din6340-m30.stl",
   "note": "DIN 6340 M30: 31 × Ø68 × 10"
  }
 ],
 "markdown": "https://xemstudio.com/objects/washers-clamping-fixtures-din-6340/index.md"
}