{
 "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": "t-slot-nuts-din-508",
 "name": "T-slot nuts, DIN 508: M4–M22 for 5–24 mm T-slots, neck width, base, height",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the DIN 508 T-slot nut dimensions for a 10, 12, 14 or 18 mm T-slot?",
 "tags": [
  "din 508",
  "t-slot nut",
  "t nut",
  "machine table nut",
  "din 650",
  "fixture",
  "fastener"
 ],
 "aliases": [
  "din 508 t-slot nut dimensions",
  "t-slot nut for 14 mm slot",
  "m12 t-slot nut 22 mm",
  "t nut 10 mm slot m8",
  "din 508 m10 height",
  "milling table t nut"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 11,
 "url": "https://xemstudio.com/objects/t-slot-nuts-din-508/",
 "sheet_txt": "https://xemstudio.com/objects/t-slot-nuts-din-508/sheet.txt",
 "sheet": {
  "basis": "OPAC's DIN 508 table (slot, a, e, h, k), cross-checked against Halder's DIN 508 catalogue (EH 23010) and fasten.it's DIN 508 table (06/2002)",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Columns: thread d, T-slot size (to DIN 650), neck width a (slot minus 0.4), base e (length and width), total height h, base height k. Halder lists the same a, e, h, k for every shared size (e.g. 14 mm slot: a 13.6, e 22, h 16, k 8).",
   "Files: square base plus a full-length neck, thread as a plain bore at the major diameter. Larger sizes (M24, M30) are in the standard but not drawn here."
  ],
  "table": {
   "columns": [
    "thread",
    "slot",
    "a",
    "e",
    "h",
    "k"
   ],
   "rows": [
    [
     "M4",
     "5",
     "4.6",
     "9",
     "6.5",
     "3"
    ],
    [
     "M5",
     "6",
     "5.6",
     "10",
     "8",
     "4"
    ],
    [
     "M6",
     "8",
     "7.6",
     "13",
     "10",
     "6"
    ],
    [
     "M8",
     "10",
     "9.6",
     "15",
     "12",
     "6"
    ],
    [
     "M10",
     "12",
     "11.6",
     "18",
     "14",
     "7"
    ],
    [
     "M12",
     "14",
     "13.6",
     "22",
     "16",
     "8"
    ],
    [
     "M14",
     "16",
     "15.6",
     "25",
     "18",
     "9"
    ],
    [
     "M16",
     "18",
     "17.6",
     "28",
     "20",
     "10"
    ],
    [
     "M18",
     "20",
     "19.6",
     "32",
     "24",
     "12"
    ],
    [
     "M20",
     "22",
     "21.6",
     "35",
     "28",
     "14"
    ],
    [
     "M22",
     "24",
     "23.6",
     "40",
     "32",
     "16"
    ]
   ]
  }
 },
 "sheet_text": "T-slot nuts, DIN 508: M4–M22 for 5–24 mm T-slots, neck width, base, height — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/t-slot-nuts-din-508/  (sheet CC BY 4.0)\nBasis: OPAC's DIN 508 table (slot, a, e, h, k), cross-checked against Halder's DIN 508 catalogue (EH 23010) and fasten.it's DIN 508 table (06/2002)\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Columns: thread d, T-slot size (to DIN 650), neck width a (slot minus 0.4), base e (length and width), total height h, base height k. Halder lists the same a, e, h, k for every shared size (e.g. 14 mm slot: a 13.6, e 22, h 16, k 8).\n- Files: square base plus a full-length neck, thread as a plain bore at the major diameter. Larger sizes (M24, M30) are in the standard but not drawn here.\n\nthread  slot  a  e  h  k\nM4  5  4.6  9  6.5  3\nM5  6  5.6  10  8  4\nM6  8  7.6  13  10  6\nM8  10  9.6  15  12  6\nM10  12  11.6  18  14  7\nM12  14  13.6  22  16  8\nM14  16  15.6  25  18  9\nM16  18  17.6  28  20  10\nM18  20  19.6  32  24  12\nM20  22  21.6  35  28  14\nM22  24  23.6  40  32  16\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- OPAC: DIN 508 nuts for T-slots: D, A, E, H, H1 — web — Publisher's page; dimensions are facts — https://www.opac.net/en/producto-4-din-508\n- Halder (via MISUMI): Nuts for T-slots DIN 508, EH 23010: d, a, e, h, k — web — Publisher's page; dimensions are facts — https://tw.c.misumi-ec.com/book/RHL1_ENG_13_02_24/pdf/0657.pdf\n- McMaster-Carr: T-slot nuts, DIN 508 metric listings — web — Publisher's page; dimensions are facts — https://www.mcmaster.com/tooling-component-t-slot-nuts\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 11 parts): https://xemstudio.com/files/hardware/t-slot-nuts-din-508/index.json\nAPI: https://xemstudio.com/api/geometry?object=t-slot-nuts-din-508\n",
 "sources": [
  {
   "publisher": "OPAC",
   "title": "DIN 508 nuts for T-slots: D, A, E, H, H1",
   "url": "https://www.opac.net/en/producto-4-din-508",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Halder (via MISUMI)",
   "title": "Nuts for T-slots DIN 508, EH 23010: d, a, e, h, k",
   "url": "https://tw.c.misumi-ec.com/book/RHL1_ENG_13_02_24/pdf/0657.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "T-slot nuts, DIN 508 metric listings",
   "url": "https://www.mcmaster.com/tooling-component-t-slot-nuts",
   "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": [
  "t-slot-covers",
  "t-slot-joining-plates",
  "hex-nuts-metric",
  "socket-head-cap-screws-metric"
 ],
 "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": "neck",
   "exact": "a = slot − 0.4: 4.6 (5 mm slot) to 23.6 (24 mm slot)",
   "mates": "T-slot width to DIN 650 (5 to 24 mm)",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "base",
   "exact": "e × e × k: 9 × 9 × 3 (M4) to 40 × 40 × 16 (M22)",
   "mates": "T-slot undercut below the slot",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "thread (plain bore at the major Ø)",
   "exact": "d: M4 to M22",
   "mates": "clamp stud or screw",
   "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 are the dimensions of a T-slot nut for a 14 mm slot?",
   "a": "DIN 508 M12 for a 14 mm slot: 13.6 mm neck, 22 × 22 mm base, 16 mm overall, 8 mm base height."
  },
  {
   "q": "Why is the neck 0.4 mm narrower than the slot?",
   "a": "DIN 508 sizes the neck a at slot − 0.4 so it slides in a DIN 650 T-slot."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "din508-5mm-m4",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-5mm-m4.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-5mm-m4.stl",
   "note": "DIN 508 for 5 mm slot, M4: neck 4.6, base 9×9, h 6.5, k 3"
  },
  {
   "file": "din508-6mm-m5",
   "formats": [
    "step",
    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-6mm-m5.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-6mm-m5.stl",
   "note": "DIN 508 for 6 mm slot, M5: neck 5.6, base 10×10, h 8, k 4"
  },
  {
   "file": "din508-8mm-m6",
   "formats": [
    "step",
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-8mm-m6.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-8mm-m6.stl",
   "note": "DIN 508 for 8 mm slot, M6: neck 7.6, base 13×13, h 10, k 6"
  },
  {
   "file": "din508-10mm-m8",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-10mm-m8.stl",
   "note": "DIN 508 for 10 mm slot, M8: neck 9.6, base 15×15, h 12, k 6"
  },
  {
   "file": "din508-12mm-m10",
   "formats": [
    "step",
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-12mm-m10.stl",
   "note": "DIN 508 for 12 mm slot, M10: neck 11.6, base 18×18, h 14, k 7"
  },
  {
   "file": "din508-14mm-m12",
   "formats": [
    "step",
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-14mm-m12.stl",
   "note": "DIN 508 for 14 mm slot, M12: neck 13.6, base 22×22, h 16, k 8"
  },
  {
   "file": "din508-16mm-m14",
   "formats": [
    "step",
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-16mm-m14.stl",
   "note": "DIN 508 for 16 mm slot, M14: neck 15.6, base 25×25, h 18, k 9"
  },
  {
   "file": "din508-18mm-m16",
   "formats": [
    "step",
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-18mm-m16.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-18mm-m16.stl",
   "note": "DIN 508 for 18 mm slot, M16: neck 17.6, base 28×28, h 20, k 10"
  },
  {
   "file": "din508-20mm-m18",
   "formats": [
    "step",
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-20mm-m18.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-20mm-m18.stl",
   "note": "DIN 508 for 20 mm slot, M18: neck 19.6, base 32×32, h 24, k 12"
  },
  {
   "file": "din508-22mm-m20",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-22mm-m20.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-22mm-m20.stl",
   "note": "DIN 508 for 22 mm slot, M20: neck 21.6, base 35×35, h 28, k 14"
  },
  {
   "file": "din508-24mm-m22",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-24mm-m22.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-nuts-din-508/din508-24mm-m22.stl",
   "note": "DIN 508 for 24 mm slot, M22: neck 23.6, base 40×40, h 32, k 16"
  }
 ],
 "markdown": "https://xemstudio.com/objects/t-slot-nuts-din-508/index.md"
}