{
 "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": "square-taper-washers-din-434",
 "name": "Square taper washers for U-sections, DIN 434: M8–M27 8 % slope, size, hole, thickness",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the DIN 434 square taper washer dimensions (size, hole, thickness) for U-section flanges, M8 to M27?",
 "tags": [
  "din 434",
  "taper washer",
  "bevel washer",
  "square taper washer",
  "u channel washer",
  "8 percent",
  "structural steel"
 ],
 "aliases": [
  "din 434 dimensions",
  "taper washer for u channel m12",
  "8% bevel washer m16",
  "square bevel washer channel flange",
  "din 434 m20 thickness"
 ],
 "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/square-taper-washers-din-434/",
 "sheet_txt": "https://xemstudio.com/objects/square-taper-washers-din-434/sheet.txt",
 "sheet": {
  "basis": "fasten.it's DIN 434 table (04/2000: d, a, b, h, e, t, r), cross-checked against Westfield Fasteners' DIN 434 table; every row satisfies e = h − 0.04 b (8 % over the half width)",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Columns: thread, hole d, length a, width b (slope direction), thickness h at the hole axis, thickness e at the thin edge. Thick edge = 2h − e.",
   "The 1990 edition used holes of 14 (M12) and 18 (M16); the current values are 13.5 and 17.5. The two shallow marking grooves (depth t, radius r) are not drawn."
  ],
  "table": {
   "columns": [
    "thread",
    "d",
    "a",
    "b",
    "h",
    "e"
   ],
   "rows": [
    [
     "M8",
     "9",
     "22",
     "22",
     "3.8",
     "2.9"
    ],
    [
     "M10",
     "11",
     "22",
     "22",
     "3.8",
     "2.9"
    ],
    [
     "M12",
     "13.5",
     "26",
     "30",
     "4.9",
     "3.7"
    ],
    [
     "M16",
     "17.5",
     "32",
     "36",
     "5.9",
     "4.45"
    ],
    [
     "M20",
     "22",
     "40",
     "44",
     "7",
     "5.25"
    ],
    [
     "M22",
     "24",
     "44",
     "50",
     "8",
     "6"
    ],
    [
     "M24",
     "26",
     "56",
     "56",
     "8.5",
     "6.26"
    ],
    [
     "M27",
     "30",
     "56",
     "56",
     "8.5",
     "6.26"
    ]
   ]
  }
 },
 "sheet_text": "Square taper washers for U-sections, DIN 434: M8–M27 8 % slope, size, hole, thickness — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/square-taper-washers-din-434/  (sheet CC BY 4.0)\nBasis: fasten.it's DIN 434 table (04/2000: d, a, b, h, e, t, r), cross-checked against Westfield Fasteners' DIN 434 table; every row satisfies e = h − 0.04 b (8 % over the half width)\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Columns: thread, hole d, length a, width b (slope direction), thickness h at the hole axis, thickness e at the thin edge. Thick edge = 2h − e.\n- The 1990 edition used holes of 14 (M12) and 18 (M16); the current values are 13.5 and 17.5. The two shallow marking grooves (depth t, radius r) are not drawn.\n\nthread  d  a  b  h  e\nM8  9  22  22  3.8  2.9\nM10  11  22  22  3.8  2.9\nM12  13.5  26  30  4.9  3.7\nM16  17.5  32  36  5.9  4.45\nM20  22  40  44  7  5.25\nM22  24  44  50  8  6\nM24  26  56  56  8.5  6.26\nM27  30  56  56  8.5  6.26\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- fasten.it: DIN 434 square taper washers (04/2000): d, a, b, h, e, t, r — web — Publisher's page; dimensions are facts — https://fasten.it/norms/norm/din_434\n- Westfield Fasteners: DIN 434 square taper washers for U-sections — web — Publisher's page; dimensions are facts — https://www.westfieldfasteners.co.uk/Standards/Washer-SqTaperU-M.html\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 8 parts): https://xemstudio.com/files/hardware/square-taper-washers-din-434/index.json\nAPI: https://xemstudio.com/api/geometry?object=square-taper-washers-din-434\n",
 "sources": [
  {
   "publisher": "fasten.it",
   "title": "DIN 434 square taper washers (04/2000): d, a, b, h, e, t, r",
   "url": "https://fasten.it/norms/norm/din_434",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Westfield Fasteners",
   "title": "DIN 434 square taper washers for U-sections",
   "url": "https://www.westfieldfasteners.co.uk/Standards/Washer-SqTaperU-M.html",
   "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": [
  "flat-washers-metric-m10-m24",
  "hex-nuts-metric-m10-m24",
  "large-washers-din-9021-iso-7093"
 ],
 "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": "sloped face",
   "exact": "8 %: thickness e at the thin edge, h at the hole (M16 4.45 → 5.9 → 7.35)",
   "mates": "inner flange of a U-section (DIN 1026)",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "hole",
   "exact": "d: 9 (M8) to 30 (M27); M16 17.5",
   "mates": "bolt of the listed thread",
   "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": "How thick is an M16 DIN 434 taper washer?",
   "a": "5.9 mm at the hole, 4.45 mm at the thin edge, 7.35 mm at the thick edge; 32 × 36 mm, 17.5 mm hole."
  },
  {
   "q": "What slope does DIN 434 have?",
   "a": "8 %, to match the inner flange of U-channel (DIN 1026); DIN 435 is the 14 % version for I-beams."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "din434-m8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m8.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m8.stl",
   "note": "DIN 434 M8: 22×22, hole 9, thickness 2.9–4.7 (h 3.8 at the hole), 8 %"
  },
  {
   "file": "din434-m10",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m10.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m10.stl",
   "note": "DIN 434 M10: 22×22, hole 11, thickness 2.9–4.7 (h 3.8 at the hole), 8 %"
  },
  {
   "file": "din434-m12",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m12.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m12.stl",
   "note": "DIN 434 M12: 26×30, hole 13.5, thickness 3.7–6.1 (h 4.9 at the hole), 8 %"
  },
  {
   "file": "din434-m16",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m16.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m16.stl",
   "note": "DIN 434 M16: 32×36, hole 17.5, thickness 4.45–7.35 (h 5.9 at the hole), 8 %"
  },
  {
   "file": "din434-m20",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m20.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m20.stl",
   "note": "DIN 434 M20: 40×44, hole 22, thickness 5.25–8.75 (h 7 at the hole), 8 %"
  },
  {
   "file": "din434-m22",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m22.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m22.stl",
   "note": "DIN 434 M22: 44×50, hole 24, thickness 6–10 (h 8 at the hole), 8 %"
  },
  {
   "file": "din434-m24",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m24.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m24.stl",
   "note": "DIN 434 M24: 56×56, hole 26, thickness 6.26–10.74 (h 8.5 at the hole), 8 %"
  },
  {
   "file": "din434-m27",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m27.step",
   "stl": "https://xemstudio.com/files/hardware/square-taper-washers-din-434/din434-m27.stl",
   "note": "DIN 434 M27: 56×56, hole 30, thickness 6.26–10.74 (h 8.5 at the hole), 8 %"
  }
 ],
 "markdown": "https://xemstudio.com/objects/square-taper-washers-din-434/index.md"
}