{"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\/sw\/calculators\/socket-head-cap-screw-iso4762\/","title":{"rendered":"Vipimo vya Boliti ya Kichwa cha Soketi ISO 4762 | Zana ya Bure ya Mtandaoni"},"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>Utafutaji wa bure wa mtandaoni wa vipimo vya skrubu ya kichwa cha soketi cha ISO 4762 (SHCS). Ingiza ukubwa ili kuona kipenyo cha kichwa, urefu wa kichwa, ukubwa wa ufunguo wa hex, na uzito uliokadiriwa.<\/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\/sw\/wp-json\/wp\/v2\/calculator\/100229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100229\/revisions"}],"predecessor-version":[{"id":100544,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100229\/revisions\/100544"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/media?parent=100229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/categories?post=100229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/tags?post=100229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}