{"id":100229,"date":"2026-02-15T20:28:28","date_gmt":"2026-02-15T20:28:28","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100229"},"modified":"2026-02-15T20:28:28","modified_gmt":"2026-02-15T20:28:28","slug":"socket-head-cap-screw-iso4762","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/bn\/calculators\/socket-head-cap-screw-iso4762\/","title":{"rendered":"Socket Head Cap Screw ISO 4762 Dimensions | Free Online Tool"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Socket Head Cap Screw ISO 4762 Dimensions\",\"alternateName\":[\"Allen Bolt Dimensions\",\"SHCS Lookup\",\"DIN 912 Calculator\"],\"description\":\"Free online lookup for ISO 4762 socket head cap screw dimensions including head diameter, height, hex key size, and mass.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/socket-head-cap-screw-iso4762\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2025-01-01\",\"dateModified\":\"2026-02-15\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true,\"featureList\":[\"ISO 4762 \/ DIN 912 dimensions\",\"Head diameter and height\",\"Hex socket key size\",\"Mass estimation\",\"Auto-calculation\"],\"keywords\":\"socket head cap screw, ISO 4762, DIN 912, Allen bolt, SHCS\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is ISO 4762?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO 4762 specifies the dimensions and tolerances for metric socket head cap screws (SHCS) with hexagonal sockets. These are commonly called Allen bolts or hex socket screws. They feature a cylindrical head with a recessed hex drive.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the head diameter of an M8 SHCS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Per ISO 4762, an M8 socket head cap screw has a head diameter (dk) of 13.0 mm, head height of 8.0 mm, and uses a 6 mm hex key (Allen wrench).\"}},\n{\"@type\":\"Question\",\"name\":\"What is the difference between ISO 4762 and DIN 912?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO 4762 replaced DIN 912. They are functionally identical for most sizes, but ISO 4762 is the current international standard. Some minor tolerance differences exist on larger sizes.\"}},\n{\"@type\":\"Question\",\"name\":\"What property class are SHCS typically?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Standard socket head cap screws per ISO 4762 are property class 12.9 (Rm = 1220 MPa, Rp = 1100 MPa). Some manufacturers also offer 8.8 and 10.9 versions.\"}},\n{\"@type\":\"Question\",\"name\":\"When should I use socket head cap screws instead of hex bolts?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Use SHCS when: (1) space is limited and a low-profile head is needed, (2) the head must be recessed\/counterbored, (3) higher strength is required (12.9 vs typical 8.8), or (4) a cleaner aesthetic is desired.\"}}\n]}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[\n{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},\n{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},\n{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Socket Head Cap Screw ISO 4762\",\"item\":\"https:\/\/vibromera.eu\/calculators\/socket-head-cap-screw-iso4762\/\"}\n]}\n<\/script>\n\n<link rel=\"preconnect\" 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print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-shcs\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool<\/p>\n    <h1 class=\"vc-header-title\">Socket Head Cap Screw \u2014 ISO 4762<\/h1>\n    <p class=\"vc-header-subtitle\">Look up dimensions of metric socket head cap screws (Allen bolts) per ISO 4762 \/ DIN 912. Select size to see head dia, height, hex key, and mass.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">ISO 4762<\/span><span class=\"vc-badge\">DIN 912<\/span><span class=\"vc-badge\">Class 12.9<\/span><\/div>\n<\/header>\n<div class=\"vc-card\">\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-size\">Screw Size<\/label>\n                <select class=\"vc-select\" id=\"vc-size\">\n                    <option value=\"3\" data-dk=\"5.5\" data-k=\"3.0\" data-hex=\"2.5\">M3<\/option>\n                    <option value=\"4\" data-dk=\"7.0\" data-k=\"4.0\" data-hex=\"3\">M4<\/option>\n                    <option value=\"5\" data-dk=\"8.5\" data-k=\"5.0\" data-hex=\"4\">M5<\/option>\n                    <option value=\"6\" data-dk=\"10.0\" data-k=\"6.0\" data-hex=\"5\">M6<\/option>\n                    <option value=\"8\" data-dk=\"13.0\" data-k=\"8.0\" data-hex=\"6\" selected>M8<\/option>\n                    <option value=\"10\" data-dk=\"16.0\" data-k=\"10.0\" data-hex=\"8\">M10<\/option>\n                    <option value=\"12\" data-dk=\"18.0\" data-k=\"12.0\" data-hex=\"10\">M12<\/option>\n                    <option value=\"14\" data-dk=\"21.0\" data-k=\"14.0\" data-hex=\"12\">M14<\/option>\n                    <option value=\"16\" data-dk=\"24.0\" data-k=\"16.0\" data-hex=\"14\">M16<\/option>\n                    <option value=\"20\" data-dk=\"30.0\" data-k=\"20.0\" data-hex=\"17\">M20<\/option>\n                    <option value=\"24\" data-dk=\"36.0\" data-k=\"24.0\" data-hex=\"19\">M24<\/option>\n                    <option value=\"30\" data-dk=\"45.0\" data-k=\"30.0\" data-hex=\"22\">M30<\/option>\n                    <option value=\"36\" data-dk=\"54.0\" data-k=\"36.0\" data-hex=\"27\">M36<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-length\">Screw Length <span class=\"vc-label-hint\">(mm)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-length\" inputmode=\"decimal\" step=\"5\" min=\"5\" value=\"30\" placeholder=\"e.g. 30\">\n            <\/div>\n        <\/div>\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-sz=\"5\" data-l=\"16\">M5 \u00d7 16<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-sz=\"6\" data-l=\"20\">M6 \u00d7 20<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-sz=\"8\" data-l=\"30\">M8 \u00d7 30<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-sz=\"10\" data-l=\"40\">M10 \u00d7 40<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-sz=\"12\" data-l=\"50\">M12 \u00d7 50<\/button>\n        <\/div>\n    <\/form>\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Results<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy<\/button><\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Estimated Mass<\/div><div class=\"vc-rcard-value\" id=\"vc-r-mass\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Head Diameter (dk)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-dk\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Head Height (k)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-k\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Hex Key Size<\/div><div class=\"vc-rcard-value\" id=\"vc-r-hex\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Counterbore Diameter (rec.)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-cb\">\u2014<\/div><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Reference<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\">\n        <h3>ISO 4762 Dimensions<\/h3>\n        <table class=\"vc-table\">\n            <thead><tr><th>Size<\/th><th>dk (mm)<\/th><th>k (mm)<\/th><th>Hex Key<\/th><\/tr><\/thead>\n            <tbody>\n                <tr><td>M3<\/td><td>5.5<\/td><td>3.0<\/td><td>2.5<\/td><\/tr>\n                <tr><td>M4<\/td><td>7.0<\/td><td>4.0<\/td><td>3<\/td><\/tr>\n                <tr><td>M5<\/td><td>8.5<\/td><td>5.0<\/td><td>4<\/td><\/tr>\n                <tr><td>M6<\/td><td>10.0<\/td><td>6.0<\/td><td>5<\/td><\/tr>\n                <tr><td>M8<\/td><td>13.0<\/td><td>8.0<\/td><td>6<\/td><\/tr>\n                <tr><td>M10<\/td><td>16.0<\/td><td>10.0<\/td><td>8<\/td><\/tr>\n                <tr><td>M12<\/td><td>18.0<\/td><td>12.0<\/td><td>10<\/td><\/tr>\n                <tr><td>M16<\/td><td>24.0<\/td><td>16.0<\/td><td>14<\/td><\/tr>\n                <tr><td>M20<\/td><td>30.0<\/td><td>20.0<\/td><td>17<\/td><\/tr>\n                <tr><td>M24<\/td><td>36.0<\/td><td>24.0<\/td><td>19<\/td><\/tr>\n            <\/tbody>\n        <\/table>\n        <p>Counterbore diameter is typically dk + 1 mm for clearance.<\/p>\n    <\/div><\/div>\n<\/div>\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\">\n        <a class=\"vc-related-link\" href=\"\/calculators\/bolt-dimensions-weight\/\">Hex Bolt Dimensions<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bolt-strength-calculator\/\">Bolt Strength<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/washer-selection\/\">Washer Selection<\/a>\n    <\/div><\/div><\/div>\n<\/div>\n<div class=\"vc-section\" id=\"vc-sec-faq\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/div><\/div>\n<\/div>\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional instruments. Used in 50+ countries.<\/div><a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a><\/div>\n<footer class=\"vc-footer\"><p>\u00a9 2024\u20132026 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p><p style=\"font-size:12px;margin-top:4px\">Based on ISO 4762. Last updated: February 2026<\/p><div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div><\/footer>\n<\/div>\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function(){\n    'use strict';\n    function $(id){return document.getElementById(id)}\n    function fmt(n,d){if(isNaN(n)||!isFinite(n))return '\u2014';var f=n.toFixed(d===undefined?2:d);return f.replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'')}\n    function calculate(){\n        var o=$('vc-size').selectedOptions[0];\n        var d=parseFloat(o.value),dk=parseFloat(o.getAttribute('data-dk')),k=parseFloat(o.getAttribute('data-k')),hex=o.getAttribute('data-hex');\n        var L=parseFloat($('vc-length').value);\n        if(!L||L<=0){$('vc-results').classList.remove('vc-visible');return}\n        var rho=7850;\n        var Vhead=Math.PI\/4*dk*dk*k;\n        var Vshank=Math.PI\/4*d*d*L;\n        var mass=(Vhead+Vshank)*rho\/1e9;\n        var massG=mass*1000;\n        var cb=dk+1;\n        $('vc-r-mass').innerHTML=(massG>=100?fmt(massG,0):fmt(massG,1))+' <span class=\"vc-rcard-unit\">g<\/span>';\n        $('vc-r-dk').innerHTML=fmt(dk,1)+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-r-k').innerHTML=fmt(k,1)+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-r-hex').innerHTML=hex+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-r-cb').innerHTML=fmt(cb,1)+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-results').classList.add('vc-visible');\n    }\n    document.querySelectorAll('.vc-preset-btn').forEach(function(b){b.addEventListener('click',function(e){e.preventDefault();$('vc-size').value=this.getAttribute('data-sz');$('vc-length').value=this.getAttribute('data-l');calculate()})});\n    $('vc-form').addEventListener('input',calculate);$('vc-form').addEventListener('change',calculate);\n    $('vc-copy-btn').addEventListener('click',function(){var text='SHCS ISO 4762\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nSize: M'+$('vc-size').value+' \u00d7 '+$('vc-length').value+'mm\\nMass: '+$('vc-r-mass').textContent+'\\nHead dk: '+$('vc-r-dk').textContent+'\\nHead k: '+$('vc-r-k').textContent+'\\nHex Key: '+$('vc-r-hex').textContent+'\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nvibromera.eu';if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('vc-copy-btn');b.classList.add('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg> Copied!';setTimeout(function(){b.classList.remove('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy'},2000)})}});\n    document.querySelectorAll('.vc-section-toggle').forEach(function(btn){btn.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});\n    var faqData=[\n        {q:'What is ISO 4762?',a:'<p>ISO 4762 specifies dimensions for metric socket head cap screws (SHCS) \u2014 commonly called Allen bolts. They have a cylindrical head with a hex socket drive.<\/p>'},\n        {q:'What is the head diameter of an M8 SHCS?',a:'<p>M8 SHCS: dk = 13.0 mm head diameter, k = 8.0 mm head height, 6 mm hex key.<\/p>'},\n        {q:'What is the difference between ISO 4762 and DIN 912?',a:'<p>ISO 4762 replaced DIN 912. Functionally identical for most sizes. Use ISO 4762 for new designs.<\/p>'},\n        {q:'What property class are SHCS typically?',a:'<p>Standard SHCS per ISO 4762 are class 12.9 (Rm = 1220 MPa). Some manufacturers also offer 8.8 and 10.9.<\/p>'},\n        {q:'When should I use SHCS instead of hex bolts?',a:'<p>Use SHCS when: (1) limited space\/low profile needed, (2) counterbore required, (3) higher strength needed (12.9), or (4) cleaner aesthetics desired.<\/p>'}\n    ];\n    var fl=$('vc-faq-list');faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>'});\n    fl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(b)b.closest('.vc-faq-item').classList.toggle('vc-open')});\n    function init(){calculate()}\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}else{init()}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Free online ISO 4762 socket head cap screw (SHCS) dimension lookup. Enter size to see head diameter, head height, hex key size, and estimated mass.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100229","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100229\/revisions"}],"predecessor-version":[{"id":100544,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100229\/revisions\/100544"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/media?parent=100229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/categories?post=100229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/tags?post=100229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}