{
 "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": "knurled-thumb-screws-din-464",
 "name": "Knurled thumb screws, high type (DIN 464), M2–M10: head diameter, head height, shank, thread length, slot",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the dimensions of a DIN 464 knurled thumb screw?",
 "tags": [
  "thumb screw",
  "knurled screw",
  "din 464",
  "hand screw",
  "fastener",
  "knob screw",
  "tool"
 ],
 "aliases": [
  "din 464 dimensions",
  "m5 knurled thumb screw dimensions",
  "m6 thumb screw head diameter",
  "din 464 m4",
  "knurled thumb screw size chart",
  "m8 thumb screw head height",
  "thumb screw head diameter metric",
  "din 464 slot width"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/knurled-thumb-screws-din-464/",
 "sheet_txt": "https://xemstudio.com/objects/knurled-thumb-screws-din-464/sheet.txt",
 "sheet": {
  "basis": "fasten.it DIN 464 table, with one maker listing (Würth M5 x 20) checked against it; numbers only",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "DIN 464 covers knurled thumb screws, high type, M1 to M10 (2007-01 edition on the fasten.it page); rows here are M2 to M10 as read, in mm. Columns are the page's letters: P pitch, b, dk, ds, h, k, n and t (min / max). The page does not define them. A Würth listing for the DIN 464 M5 x 20 screw (A2K, property class 5.8) prints pitch 0.8, shank diameter 10, thread length 15, head diameter 20 and head height 4, which match fasten.it's M5 values for P, ds, b, dk and k respectively; that is the only cross-check made, so b is read as the thread length, dk as the head diameter, ds as the diameter Würth lists as the shank diameter and k as the head height Würth quotes; h (11.5 for M5) is a separate column and is not defined by either source.",
   "The table also carries n and t (min / max); neither source defines them in words and the Würth screw has no slot, so they are shown as the table's columns only. M1 to M1.6 sizes exist in the standard but were not read.",
   "Not published as numbers in the sources read: the knurl pattern and depth, the head's profile between dk, ds, h and k, edge radii. No file is drawn for that reason.",
   "DIN 464 is the high type. McMaster-Carr's thumb-screw categories carry per-part STEP; its knurled-head page lists inch sizes 0-80 to 1/4-28 and the metric page is linked, not copied."
  ],
  "table": {
   "columns": [
    "size",
    "P (mm)",
    "b",
    "dk",
    "ds",
    "h",
    "k",
    "n",
    "t (min – max)"
   ],
   "rows": [
    [
     "M2",
     "0.4",
     "6",
     "9",
     "4.5",
     "5.3",
     "2",
     "0.5",
     "1.1 – 1.4"
    ],
    [
     "M2.5",
     "0.45",
     "8",
     "11",
     "5",
     "6.5",
     "2.5",
     "0.6",
     "1.5 – 1.8"
    ],
    [
     "M3",
     "0.5",
     "9",
     "12",
     "6",
     "7.5",
     "2.5",
     "0.8",
     "1.8 – 2.2"
    ],
    [
     "M4",
     "0.7",
     "12",
     "16",
     "8",
     "9.5",
     "3.5",
     "1",
     "2.2 – 2.7"
    ],
    [
     "M5",
     "0.8",
     "15",
     "20",
     "10",
     "11.5",
     "4",
     "1.2",
     "2.8 – 3.4"
    ],
    [
     "M6",
     "1",
     "18",
     "24",
     "12",
     "15",
     "5",
     "1.6",
     "3.5 – 4.3"
    ],
    [
     "M8",
     "1.25",
     "24",
     "30",
     "16",
     "18",
     "6",
     "2",
     "4.5 – 5.5"
    ],
    [
     "M10",
     "1.5",
     "30",
     "36",
     "20",
     "23",
     "8",
     "2.5",
     "6 – 7"
    ]
   ]
  }
 },
 "sheet_text": "Knurled thumb screws, high type (DIN 464), M2–M10: head diameter, head height, shank, thread length, slot — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/knurled-thumb-screws-din-464/  (sheet CC BY 4.0)\nBasis: fasten.it DIN 464 table, with one maker listing (Würth M5 x 20) checked against it; numbers only\nCatalog version: 2026-10-20\n\nSizes: see table below\n- DIN 464 covers knurled thumb screws, high type, M1 to M10 (2007-01 edition on the fasten.it page); rows here are M2 to M10 as read, in mm. Columns are the page's letters: P pitch, b, dk, ds, h, k, n and t (min / max). The page does not define them. A Würth listing for the DIN 464 M5 x 20 screw (A2K, property class 5.8) prints pitch 0.8, shank diameter 10, thread length 15, head diameter 20 and head height 4, which match fasten.it's M5 values for P, ds, b, dk and k respectively; that is the only cross-check made, so b is read as the thread length, dk as the head diameter, ds as the diameter Würth lists as the shank diameter and k as the head height Würth quotes; h (11.5 for M5) is a separate column and is not defined by either source.\n- The table also carries n and t (min / max); neither source defines them in words and the Würth screw has no slot, so they are shown as the table's columns only. M1 to M1.6 sizes exist in the standard but were not read.\n- Not published as numbers in the sources read: the knurl pattern and depth, the head's profile between dk, ds, h and k, edge radii. No file is drawn for that reason.\n- DIN 464 is the high type. McMaster-Carr's thumb-screw categories carry per-part STEP; its knurled-head page lists inch sizes 0-80 to 1/4-28 and the metric page is linked, not copied.\n\nsize  P (mm)  b  dk  ds  h  k  n  t (min – max)\nM2  0.4  6  9  4.5  5.3  2  0.5  1.1 – 1.4\nM2.5  0.45  8  11  5  6.5  2.5  0.6  1.5 – 1.8\nM3  0.5  9  12  6  7.5  2.5  0.8  1.8 – 2.2\nM4  0.7  12  16  8  9.5  3.5  1  2.2 – 2.7\nM5  0.8  15  20  10  11.5  4  1.2  2.8 – 3.4\nM6  1  18  24  12  15  5  1.6  3.5 – 4.3\nM8  1.25  24  30  16  18  6  2  4.5 – 5.5\nM10  1.5  30  36  20  23  8  2.5  6 – 7\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- fasten.it: DIN 464 Standard Dimensions for knurled thumb screws, high type (M1 to M10, 2007-01): P, b, dk, ds, h, k, n, t min / max — web — Reference page; numbers only. The page does not define the column letters — https://www.fasten.it/en/norms/norm/din_464\n- Würth: Knurled thumb screw, high profile, DIN 464 5.8 A2K M5 x 20: pitch 0.8, shank diameter 10, thread length 15, head diameter 20, head height 4, property class 5.8 — web — Publisher's page; dimensions are facts — https://eshop.wurth.fi/Knurled-thumb-screw-high-profile-SCR-KNRL-DIN464-58-A2K-M5X20/022415%2020.sku/en/US/EUR\n- McMaster-Carr: Knurled-head thumb screws (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/knurled-head-thumb-screws\n- McMaster-Carr: Metric steel thumb screws (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/metric-steel-thumb-screws\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=knurled-thumb-screws-din-464\n",
 "sources": [
  {
   "publisher": "fasten.it",
   "title": "DIN 464 Standard Dimensions for knurled thumb screws, high type (M1 to M10, 2007-01): P, b, dk, ds, h, k, n, t min / max",
   "url": "https://www.fasten.it/en/norms/norm/din_464",
   "formats": [
    "web"
   ],
   "license": "Reference page; numbers only. The page does not define the column letters",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Würth",
   "title": "Knurled thumb screw, high profile, DIN 464 5.8 A2K M5 x 20: pitch 0.8, shank diameter 10, thread length 15, head diameter 20, head height 4, property class 5.8",
   "url": "https://eshop.wurth.fi/Knurled-thumb-screw-high-profile-SCR-KNRL-DIN464-58-A2K-M5X20/022415%2020.sku/en/US/EUR",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Knurled-head thumb screws (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/knurled-head-thumb-screws",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Metric steel thumb screws (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/metric-steel-thumb-screws",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "wing-screws-din-316",
  "wing-nuts-din-315-asme-b18-17",
  "socket-head-cap-screws-metric",
  "hex-head-screws-metric",
  "set-screws-metric",
  "star-knobs-din-6336",
  "ball-knobs-din-319"
 ],
 "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": [],
 "faq": [
  {
   "q": "What is the head diameter of an M5 DIN 464 thumb screw?",
   "a": "20 mm (dk) in the fasten.it table; a Würth M5 x 20 listing also gives 20 mm."
  },
  {
   "q": "How long is the thread on an M6 DIN 464 thumb screw?",
   "a": "The b column is 18 mm for M6; Würth's M5 listing shows b is the thread length for its 20 mm screw (15 mm)."
  },
  {
   "q": "What is the ds of an M8 DIN 464 thumb screw?",
   "a": "16 mm on the fasten.it page; Würth lists the M5 value (10 mm) as the shank diameter."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/knurled-thumb-screws-din-464/index.md"
}