{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "clevis-pins",
 "name": "Clevis pins ISO 2341 B, Ø3 to Ø8",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Motion",
 "year": null,
 "question": "What are the dimensions of an ISO 2341 clevis pin with a split-pin hole?",
 "tags": [
  "clevis pin",
  "iso 2341",
  "pin",
  "linkage",
  "pivot",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "clevis pin dimensions",
  "iso 2341 clevis pin",
  "clevis pin 5mm",
  "clevis pin step file",
  "clevis pin sizes"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 7,
 "url": "https://xemstudio.com/objects/clevis-pins/",
 "sheet_txt": "https://xemstudio.com/objects/clevis-pins/sheet.txt",
 "sheet": {
  "basis": "ISO 2341 form B clevis pin: head Ø and height, split-pin hole Ø and its axis distance from the shank end",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A plain shank with a head on one end and a cross-hole for a split pin near the other. The shank length L is measured under the head, so each file is L plus the head height overall (Ø3 × 12 is 13 long, Ø8 × 40 is 43).",
   "Head Ø × height, cross-hole Ø and hole axis from the shank end, by pin Ø: 3 → 5 × 1, 0.8, 1.6; 4 → 6 × 1, 1.0, 2.2; 5 → 8 × 1.6, 1.2, 2.9; 6 → 10 × 2, 1.6, 3.2; 8 → 14 × 3, 2.0, 3.5.",
   "The shank is drawn at the pin Ø exactly. The holes it passes through on a clevis or link are drawn at the same Ø; which joints turn on the pin and which hold it fixed is listed under Mating features.",
   "The cross-hole takes an ISO 1234 split pin of the same nominal size (0.8 hole, 0.8 split pin). The R-clips in this library have a 1.2 wire, which passes the Ø1.2, Ø1.6 and Ø2.0 cross-holes of the Ø5, Ø6 and Ø8 pins."
  ],
  "table": {
   "columns": [
    "pin Ø",
    "length L",
    "overall",
    "head Ø × height",
    "cross-hole Ø",
    "hole axis from end"
   ],
   "rows": [
    [
     3,
     12,
     13,
     "5 × 1",
     0.8,
     1.6
    ],
    [
     3,
     20,
     21,
     "5 × 1",
     0.8,
     1.6
    ],
    [
     4,
     20,
     21,
     "6 × 1",
     1,
     2.2
    ],
    [
     5,
     20,
     21.6,
     "8 × 1.6",
     1.2,
     2.9
    ],
    [
     5,
     30,
     31.6,
     "8 × 1.6",
     1.2,
     2.9
    ],
    [
     6,
     30,
     32,
     "10 × 2",
     1.6,
     3.2
    ],
    [
     8,
     40,
     43,
     "14 × 3",
     2,
     3.5
    ]
   ]
  }
 },
 "sheet_text": "Clevis pins ISO 2341 B, Ø3 to Ø8 — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/clevis-pins/  (CC BY 4.0)\nBasis: ISO 2341 form B clevis pin: head Ø and height, split-pin hole Ø and its axis distance from the shank end\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A plain shank with a head on one end and a cross-hole for a split pin near the other. The shank length L is measured under the head, so each file is L plus the head height overall (Ø3 × 12 is 13 long, Ø8 × 40 is 43).\n- Head Ø × height, cross-hole Ø and hole axis from the shank end, by pin Ø: 3 → 5 × 1, 0.8, 1.6; 4 → 6 × 1, 1.0, 2.2; 5 → 8 × 1.6, 1.2, 2.9; 6 → 10 × 2, 1.6, 3.2; 8 → 14 × 3, 2.0, 3.5.\n- The shank is drawn at the pin Ø exactly. The holes it passes through on a clevis or link are drawn at the same Ø; which joints turn on the pin and which hold it fixed is listed under Mating features.\n- The cross-hole takes an ISO 1234 split pin of the same nominal size (0.8 hole, 0.8 split pin). The R-clips in this library have a 1.2 wire, which passes the Ø1.2, Ø1.6 and Ø2.0 cross-holes of the Ø5, Ø6 and Ø8 pins.\n\npin Ø  length L  overall  head Ø × height  cross-hole Ø  hole axis from end\n3  12  13  5 × 1  0.8  1.6\n3  20  21  5 × 1  0.8  1.6\n4  20  21  6 × 1  1.0  2.2\n5  20  21.6  8 × 1.6  1.2  2.9\n5  30  31.6  8 × 1.6  1.2  2.9\n6  30  32  10 × 2  1.6  3.2\n8  40  43  14 × 3  2.0  3.5\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: Clevis fastener — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Clevis_fastener\n- Wikipedia: Universal joint — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Universal_joint\n- Wikipedia: Rod end bearing — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Rod_end_bearing\n- McMaster-Carr: Clevis pins (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/clevis-pins/\n- McMaster-Carr: Rod ends (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/ball-joint-rod-ends/\n- Long Earth Society: Engine and rig builds — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 7 parts): https://xemstudio.com/files/hardware/clevis-pins/index.json\nAPI: https://xemstudio.com/api/geometry?object=clevis-pins\n",
 "sources": [
  {
   "publisher": "Wikipedia",
   "title": "Clevis fastener",
   "url": "https://en.wikipedia.org/wiki/Clevis_fastener",
   "formats": [
    "web"
   ],
   "license": "CC BY-SA 4.0 (text)",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Wikipedia",
   "title": "Universal joint",
   "url": "https://en.wikipedia.org/wiki/Universal_joint",
   "formats": [
    "web"
   ],
   "license": "CC BY-SA 4.0 (text)",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Wikipedia",
   "title": "Rod end bearing",
   "url": "https://en.wikipedia.org/wiki/Rod_end_bearing",
   "formats": [
    "web"
   ],
   "license": "CC BY-SA 4.0 (text)",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Clevis pins (free STEP per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/clevis-pins/",
   "formats": [
    "STEP",
    "PDF"
   ],
   "license": "McMaster-Carr site terms",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Rod ends (free STEP per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/ball-joint-rod-ends/",
   "formats": [
    "STEP",
    "PDF"
   ],
   "license": "McMaster-Carr site terms",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "Long Earth Society",
   "title": "Engine and rig builds",
   "url": "https://longearthsociety.com/engineering/",
   "formats": [
    "web",
    "video"
   ],
   "license": "LES site",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "r-clips",
  "clevises",
  "dowel-pins-metric",
  "four-bar-links",
  "bell-cranks"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "clevises",
     "why": "Ø3 / Ø5 / Ø6 pin across the fork's Ø3 / Ø5 / Ø6 hole"
    }
   ]
  },
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "r-clips",
     "why": "1.2 wire through the Ø1.2–Ø2.0 cross-hole"
    },
    {
     "slug": "four-bar-links",
     "why": "pin through the link's pivot hole"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "dowel-pins-metric",
     "why": "headless pin of the same Ø"
    }
   ]
  }
 ],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. 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.",
 "mating": [
  {
   "feature": "pin shank",
   "exact": "Ø3 / 4 / 5 / 6 / 8",
   "mates": "clevis and link holes",
   "fit": "run",
   "files": "clevis-pin-"
  },
  {
   "feature": "split-pin hole",
   "exact": "Ø0.8 / 1.0 / 1.2 / 1.6 / 2.0 (ISO 2341)",
   "mates": "ISO 1234 split pin of that size",
   "fit": "designed",
   "files": "clevis-pin-"
  },
  {
   "feature": "pin hole",
   "exact": "Ø3 / Ø5 / Ø6",
   "mates": "clevis pin (turns in it)",
   "fit": "run",
   "files": "clevis-"
  },
  {
   "feature": "fork gap",
   "exact": "5 / 8 / 10 / 12",
   "mates": "link of that thickness",
   "fit": "run",
   "files": "clevis-"
  },
  {
   "feature": "shank thread hole",
   "exact": "Ø2.5",
   "mates": "M3 tap drill (pushrod)",
   "fit": "designed",
   "files": "clevis-"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. Typical FDM: hole +0.0 to +0.1 mm on diameter.",
  "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. Typical FDM: +0.2 mm.",
  "run": "turns or slides in use: pin in a link, rod through a guide. Typical FDM: +0.3 mm.",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. Typical FDM: +0.3 mm.",
  "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 5 mm clevis pin?",
   "a": "ISO 2341 B Ø5: head Ø8 × 1.6, split-pin hole Ø1.2 with its axis 2.9 mm from the end. The Ø5 × 20 file is 21.6 mm overall."
  },
  {
   "q": "What size split pin goes in a clevis pin?",
   "a": "The split-pin size equals the cross-hole Ø: 0.8 for a Ø3 pin, 1.0 for Ø4, 1.2 for Ø5, 1.6 for Ø6, 2.0 for Ø8."
  },
  {
   "q": "How long is a clevis pin measured?",
   "a": "Under the head: a Ø3 × 20 pin has a 20 mm shank and a 1 mm head, 21 mm overall."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "clevis-pin-3x12",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x12.step",
   "stl": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x12.stl",
   "note": "ISO 2341 B clevis pin Ø3 × 12: head Ø5 × 1, Ø0.8 split-pin hole 1.6 from the end"
  },
  {
   "file": "clevis-pin-3x20",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x20.step",
   "stl": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x20.stl",
   "note": "ISO 2341 B clevis pin Ø3 × 20: head Ø5 × 1, Ø0.8 split-pin hole 1.6 from the end"
  },
  {
   "file": "clevis-pin-4x20",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-4x20.step",
   "stl": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-4x20.stl",
   "note": "ISO 2341 B clevis pin Ø4 × 20: head Ø6 × 1, Ø1 split-pin hole 2.2 from the end"
  },
  {
   "file": "clevis-pin-5x20",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x20.step",
   "stl": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x20.stl",
   "note": "ISO 2341 B clevis pin Ø5 × 20: head Ø8 × 1.6, Ø1.2 split-pin hole 2.9 from the end"
  },
  {
   "file": "clevis-pin-5x30",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x30.step",
   "stl": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x30.stl",
   "note": "ISO 2341 B clevis pin Ø5 × 30: head Ø8 × 1.6, Ø1.2 split-pin hole 2.9 from the end"
  },
  {
   "file": "clevis-pin-6x30",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-6x30.step",
   "stl": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-6x30.stl",
   "note": "ISO 2341 B clevis pin Ø6 × 30: head Ø10 × 2, Ø1.6 split-pin hole 3.2 from the end"
  },
  {
   "file": "clevis-pin-8x40",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-8x40.step",
   "stl": "https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-8x40.stl",
   "note": "ISO 2341 B clevis pin Ø8 × 40: head Ø14 × 3, Ø2 split-pin hole 3.5 from the end"
  }
 ],
 "markdown": "https://xemstudio.com/objects/clevis-pins/index.md"
}