{
 "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": "shoulder-eye-bolts-inch",
 "name": "Regular shoulder eye bolts, inch (drop forged), 1/4 to 1 in: eye, shoulder, overall and thread length (dimensions only)",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the eye diameter, shoulder diameter and thread length of a 1/2 in shoulder eye bolt?",
 "tags": [
  "eye bolt",
  "shoulder eye bolt",
  "machinery eye bolt",
  "forged eye bolt",
  "lifting",
  "fastener",
  "inch"
 ],
 "aliases": [
  "shoulder eye bolt dimensions",
  "1/2 shoulder eye bolt eye diameter",
  "3/8 eye bolt thread length",
  "5/16 shoulder eye bolt dimensions",
  "forged eye bolt size chart",
  "1/4 eye bolt inside eye diameter",
  "regular shoulder eye bolt dimensions"
 ],
 "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/shoulder-eye-bolts-inch/",
 "sheet_txt": "https://xemstudio.com/objects/shoulder-eye-bolts-inch/sheet.txt",
 "sheet": {
  "basis": "One maker's regular-shoulder drop-forged eye bolt catalogue sheet (30 size × shank rows); dimensions only, no load values",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Rows are the Chicago Hardware regular-shoulder pattern as printed: nominal thread size × shank length, outside eye C, inside eye D, overall length E, outside shoulder F, shoulder thickness G and thread length T (inches). Each size has one set of eye and shoulder dimensions, with several shank lengths; the thread length is per row. The sheet's 7/8 x 5 thread length prints as 2-12 followed by an inch mark and reads as 2-1/2 in against the neighbouring rows.",
   "Working load limits, weights and part numbers are left out on purpose: a lifting figure should come from the marking on the eye bolt, not from a dimension page. The sheet names an ASME standard for its requirements but the number is not legible in the text read, so no standard is cited for these dimensions.",
   "These are one maker's dimensions; other makers' shoulder eye bolts differ in eye size and shoulder. The sheet notes special shank and thread lengths are available.",
   "Not published as numbers: the eye cross-section, the neck blending eye to shoulder, thread form. No file is drawn. McMaster-Carr sells forged lifting eyebolts, inch and metric, with per-part STEP; its category is linked, not copied. Metric DIN 580: eye-bolts-din-580."
  ],
  "table": {
   "columns": [
    "size × shank length",
    "outside eye C",
    "inside eye D",
    "overall length E",
    "outside shoulder F",
    "shoulder thickness G",
    "thread length T"
   ],
   "rows": [
    [
     "1/4\" x 2",
     "1\"",
     "1/2\"",
     "3-1/8\"",
     "7/16\"",
     "5/64\"",
     "1-1/2\""
    ],
    [
     "1/4\" x 3",
     "1\"",
     "1/2\"",
     "4-1/8\"",
     "7/16\"",
     "5/64\"",
     "1-1/2\""
    ],
    [
     "1/4\" x 4",
     "1\"",
     "1/2\"",
     "5-1/8\"",
     "7/16\"",
     "5/64\"",
     "2\""
    ],
    [
     "5/16\" x 2-1/4",
     "1-1/4\"",
     "5/8\"",
     "3-5/8\"",
     "9/16\"",
     "3/32\"",
     "1-1/2\""
    ],
    [
     "5/16\" x 3-1/4",
     "1-1/4\"",
     "5/8\"",
     "4-5/8\"",
     "9/16\"",
     "3/32\"",
     "1-1/2\""
    ],
    [
     "5/16\" x 4-1/4",
     "1-1/4\"",
     "5/8\"",
     "5-5/8\"",
     "9/16\"",
     "3/32\"",
     "2-1/2\""
    ],
    [
     "3/8\" x 2-1/2",
     "1-1/2\"",
     "3/4\"",
     "4-1/4\"",
     "11/16\"",
     "1/8\"",
     "1-1/2\""
    ],
    [
     "3/8\" x 3",
     "1-1/2\"",
     "3/4\"",
     "4-3/4\"",
     "11/16\"",
     "1/8\"",
     "1-1/2\""
    ],
    [
     "3/8\" x 4-1/2",
     "1-1/2\"",
     "3/4\"",
     "6-1/4\"",
     "11/16\"",
     "1/8\"",
     "2\""
    ],
    [
     "3/8\" x 5",
     "1-1/2\"",
     "3/4\"",
     "6-3/4\"",
     "11/16\"",
     "1/8\"",
     "2-1/2\""
    ],
    [
     "3/8\" x 6",
     "1-1/2\"",
     "3/4\"",
     "7-3/4\"",
     "11/16\"",
     "1/8\"",
     "3\""
    ],
    [
     "3/8\" x 8",
     "1-1/2\"",
     "3/4\"",
     "9-3/4\"",
     "11/16\"",
     "1/8\"",
     "4\""
    ],
    [
     "1/2\" x 2",
     "2\"",
     "1\"",
     "4-5/16\"",
     "7/8\"",
     "5/32\"",
     "1-7/8\""
    ],
    [
     "1/2\" x 3-1/4",
     "2\"",
     "1\"",
     "5-1/2\"",
     "7/8\"",
     "5/32\"",
     "1-1/2\""
    ],
    [
     "1/2\" x 4-1/2",
     "2\"",
     "1\"",
     "6-3/4\"",
     "7/8\"",
     "5/32\"",
     "2\""
    ],
    [
     "1/2\" x 6",
     "2\"",
     "1\"",
     "8-1/4\"",
     "7/8\"",
     "5/32\"",
     "3\""
    ],
    [
     "1/2\" x 8",
     "2\"",
     "1\"",
     "10-1/4\"",
     "7/8\"",
     "5/32\"",
     "4\""
    ],
    [
     "1/2\" x 10",
     "2\"",
     "1\"",
     "12-1/4\"",
     "7/8\"",
     "5/32\"",
     "4\""
    ],
    [
     "1/2\" x 12",
     "2\"",
     "1\"",
     "14-1/4\"",
     "7/8\"",
     "5/32\"",
     "4\""
    ],
    [
     "5/8\" x 4-1/2",
     "2-5/16\"",
     "1-1/4\"",
     "7-1/4\"",
     "1-1/8\"",
     "13/64\"",
     "2\""
    ],
    [
     "5/8\" x 6",
     "2-5/16\"",
     "1-1/4\"",
     "8-9/16\"",
     "1-1/8\"",
     "13/64\"",
     "3\""
    ],
    [
     "5/8\" x 8",
     "2-5/16\"",
     "1-1/4\"",
     "10-9/16\"",
     "1-1/8\"",
     "13/64\"",
     "4\""
    ],
    [
     "5/8\" x 10",
     "2-5/16\"",
     "1-1/4\"",
     "12-9/16\"",
     "1-1/8\"",
     "13/64\"",
     "4\""
    ],
    [
     "5/8\" x 12",
     "2-5/16\"",
     "1-1/4\"",
     "14-9/16\"",
     "1-1/8\"",
     "13/64\"",
     "4\""
    ],
    [
     "3/4\" x 4-1/2",
     "2-3/4\"",
     "1-1/2\"",
     "7-3/4\"",
     "1-3/8\"",
     "1/4\"",
     "2-1/2\""
    ],
    [
     "3/4\" x 6",
     "2-3/4\"",
     "1-1/2\"",
     "9-1/8\"",
     "1-3/8\"",
     "1/4\"",
     "3\""
    ],
    [
     "7/8\" x 5",
     "3-1/2\"",
     "1-3/4\"",
     "9-1/4\"",
     "1-1/2\"",
     "9/32\"",
     "2-1/2\" (printed \"2-12\"\")"
    ],
    [
     "7/8\" x 8",
     "3-1/2\"",
     "1-3/4\"",
     "12-1/8\"",
     "1-1/2\"",
     "9/32\"",
     "4\""
    ],
    [
     "1\" x 6",
     "3-3/4\"",
     "2\"",
     "10-1/2\"",
     "1-3/4\"",
     "5/16\"",
     "3\""
    ],
    [
     "1\" x 9",
     "3-3/4\"",
     "2\"",
     "13-1/4\"",
     "1-3/4\"",
     "5/16\"",
     "4\""
    ]
   ]
  }
 },
 "sheet_text": "Regular shoulder eye bolts, inch (drop forged), 1/4 to 1 in: eye, shoulder, overall and thread length (dimensions only) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/shoulder-eye-bolts-inch/  (sheet CC BY 4.0)\nBasis: One maker's regular-shoulder drop-forged eye bolt catalogue sheet (30 size × shank rows); dimensions only, no load values\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Rows are the Chicago Hardware regular-shoulder pattern as printed: nominal thread size × shank length, outside eye C, inside eye D, overall length E, outside shoulder F, shoulder thickness G and thread length T (inches). Each size has one set of eye and shoulder dimensions, with several shank lengths; the thread length is per row. The sheet's 7/8 x 5 thread length prints as 2-12 followed by an inch mark and reads as 2-1/2 in against the neighbouring rows.\n- Working load limits, weights and part numbers are left out on purpose: a lifting figure should come from the marking on the eye bolt, not from a dimension page. The sheet names an ASME standard for its requirements but the number is not legible in the text read, so no standard is cited for these dimensions.\n- These are one maker's dimensions; other makers' shoulder eye bolts differ in eye size and shoulder. The sheet notes special shank and thread lengths are available.\n- Not published as numbers: the eye cross-section, the neck blending eye to shoulder, thread form. No file is drawn. McMaster-Carr sells forged lifting eyebolts, inch and metric, with per-part STEP; its category is linked, not copied. Metric DIN 580: eye-bolts-din-580.\n\nsize × shank length  outside eye C  inside eye D  overall length E  outside shoulder F  shoulder thickness G  thread length T\n1/4\" x 2  1\"  1/2\"  3-1/8\"  7/16\"  5/64\"  1-1/2\"\n1/4\" x 3  1\"  1/2\"  4-1/8\"  7/16\"  5/64\"  1-1/2\"\n1/4\" x 4  1\"  1/2\"  5-1/8\"  7/16\"  5/64\"  2\"\n5/16\" x 2-1/4  1-1/4\"  5/8\"  3-5/8\"  9/16\"  3/32\"  1-1/2\"\n5/16\" x 3-1/4  1-1/4\"  5/8\"  4-5/8\"  9/16\"  3/32\"  1-1/2\"\n5/16\" x 4-1/4  1-1/4\"  5/8\"  5-5/8\"  9/16\"  3/32\"  2-1/2\"\n3/8\" x 2-1/2  1-1/2\"  3/4\"  4-1/4\"  11/16\"  1/8\"  1-1/2\"\n3/8\" x 3  1-1/2\"  3/4\"  4-3/4\"  11/16\"  1/8\"  1-1/2\"\n3/8\" x 4-1/2  1-1/2\"  3/4\"  6-1/4\"  11/16\"  1/8\"  2\"\n3/8\" x 5  1-1/2\"  3/4\"  6-3/4\"  11/16\"  1/8\"  2-1/2\"\n3/8\" x 6  1-1/2\"  3/4\"  7-3/4\"  11/16\"  1/8\"  3\"\n3/8\" x 8  1-1/2\"  3/4\"  9-3/4\"  11/16\"  1/8\"  4\"\n1/2\" x 2  2\"  1\"  4-5/16\"  7/8\"  5/32\"  1-7/8\"\n1/2\" x 3-1/4  2\"  1\"  5-1/2\"  7/8\"  5/32\"  1-1/2\"\n1/2\" x 4-1/2  2\"  1\"  6-3/4\"  7/8\"  5/32\"  2\"\n1/2\" x 6  2\"  1\"  8-1/4\"  7/8\"  5/32\"  3\"\n1/2\" x 8  2\"  1\"  10-1/4\"  7/8\"  5/32\"  4\"\n1/2\" x 10  2\"  1\"  12-1/4\"  7/8\"  5/32\"  4\"\n1/2\" x 12  2\"  1\"  14-1/4\"  7/8\"  5/32\"  4\"\n5/8\" x 4-1/2  2-5/16\"  1-1/4\"  7-1/4\"  1-1/8\"  13/64\"  2\"\n5/8\" x 6  2-5/16\"  1-1/4\"  8-9/16\"  1-1/8\"  13/64\"  3\"\n5/8\" x 8  2-5/16\"  1-1/4\"  10-9/16\"  1-1/8\"  13/64\"  4\"\n5/8\" x 10  2-5/16\"  1-1/4\"  12-9/16\"  1-1/8\"  13/64\"  4\"\n5/8\" x 12  2-5/16\"  1-1/4\"  14-9/16\"  1-1/8\"  13/64\"  4\"\n3/4\" x 4-1/2  2-3/4\"  1-1/2\"  7-3/4\"  1-3/8\"  1/4\"  2-1/2\"\n3/4\" x 6  2-3/4\"  1-1/2\"  9-1/8\"  1-3/8\"  1/4\"  3\"\n7/8\" x 5  3-1/2\"  1-3/4\"  9-1/4\"  1-1/2\"  9/32\"  2-1/2\" (printed \"2-12\"\")\n7/8\" x 8  3-1/2\"  1-3/4\"  12-1/8\"  1-1/2\"  9/32\"  4\"\n1\" x 6  3-3/4\"  2\"  10-1/2\"  1-3/4\"  5/16\"  3\"\n1\" x 9  3-3/4\"  2\"  13-1/4\"  1-3/4\"  5/16\"  4\"\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Chicago Hardware (via BigCommerce): Regular shoulder drop-forged eye bolts, 1/4 to 1 in: outside eye C, inside eye D, overall length E, outside shoulder F, shoulder thickness G, thread length T — web — Maker catalogue sheet; numbers only — https://cdn11.bigcommerce.com/s-11cqjpjngs/content/files/Chicago-Regular-Shoulder-Eye-Bolts.pdf\n- McMaster-Carr: Galvanized eyebolts (for lifting) (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/galvanized-eyebolts\n- McMaster-Carr: DIN 580 eyebolts (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/din-580-eyebolts\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=shoulder-eye-bolts-inch\n",
 "sources": [
  {
   "publisher": "Chicago Hardware (via BigCommerce)",
   "title": "Regular shoulder drop-forged eye bolts, 1/4 to 1 in: outside eye C, inside eye D, overall length E, outside shoulder F, shoulder thickness G, thread length T",
   "url": "https://cdn11.bigcommerce.com/s-11cqjpjngs/content/files/Chicago-Regular-Shoulder-Eye-Bolts.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker catalogue sheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Galvanized eyebolts (for lifting) (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/galvanized-eyebolts",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "DIN 580 eyebolts (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/din-580-eyebolts",
   "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": [
  "eye-bolts-din-580",
  "hex-bolts-inch",
  "lag-screws-hex-inch",
  "shoulder-screws-asme-b18-3",
  "shackles-bow-d-crosby-g209-g210-g2130"
 ],
 "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 inside eye of a 1/2 in shoulder eye bolt?",
   "a": "1 in inside eye (D), 2 in outside eye (C), 7/8 in outside shoulder (F) in the Chicago Hardware regular-shoulder sheet."
  },
  {
   "q": "How long is the thread on a 3/8 x 3 shoulder eye bolt?",
   "a": "1-1/2 in on that sheet; overall length 4-3/4 in."
  },
  {
   "q": "What is the shoulder thickness on a 1/4 in eye bolt?",
   "a": "5/64 in on the Chicago Hardware sheet (outside shoulder 7/16 in)."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/shoulder-eye-bolts-inch/index.md"
}