{"id":100087,"date":"2026-02-15T20:17:31","date_gmt":"2026-02-15T20:17:31","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100087"},"modified":"2026-07-12T03:06:09","modified_gmt":"2026-07-12T03:06:09","slug":"eyebolt-load-iso3266","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/sr\/calculators\/eyebolt-load-iso3266\/","title":{"rendered":"Eyebolt Static Demand Check | ISO 3266 Scope"},"content":{"rendered":"\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Eyebolt Static Demand Check \\u2014 ISO 3266 Scope\",\"description\":\"Resolve ideal static force per eyebolt and compare it with the configuration-specific WLL from the exact product certificate; no ISO capacity table is reproduced.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/eyebolt-load-iso3266\/\",\"applicationCategory\":\"Engineering 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p:last-child{margin-bottom:0}.vc-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.vc-related-link{display:inline-block;padding:8px 16px;font-family:var(--vc-font);font-size:13px;font-weight:600;background:var(--vc-surface-alt);color:var(--vc-ink-secondary);border:1px solid var(--vc-border);border-radius:var(--vc-radius);text-decoration:none;transition:all .15s}.vc-related-link:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}.vc-promo{margin-top:24px;padding:20px;background:linear-gradient(135deg,var(--vc-accent-light),var(--vc-surface));border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);display:flex;align-items:center;gap:16px}.vc-promo-text{flex:1;font-size:14px;color:var(--vc-ink-secondary)}.vc-promo-text strong{color:var(--vc-ink)}.vc-promo-link{padding:8px 20px;font-size:13px;font-weight:700;color:#fff;background:var(--vc-accent);border-radius:var(--vc-radius);text-decoration:none;white-space:nowrap;transition:background .15s}.vc-promo-link:hover{background:var(--vc-accent-hover)}.vc-footer{text-align:center;padding:32px 16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}@media 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}}<\/style>\r\n<div class=\"vc-calculator\" id=\"vc-eyebolt-check\">\r\n<header class=\"vc-header\"><p class=\"vc-header-eyebrow\">Static demand, not a guessed rating table<\/p><h1 class=\"vc-header-title\">Eyebolt Static Demand Check \u2014 ISO 3266 Scope<\/h1><p class=\"vc-header-subtitle\">Resolve ideal static force for one axial eyebolt or a symmetric pair, then compare it with the WLL certified for the exact product and configuration. This page does not derive an ISO 3266 capacity.<\/p><div class=\"vc-badges\"><span class=\"vc-badge\">ISO 3266:2010 + Amd 1:2015<\/span><span class=\"vc-badge\">Certificate WLL required<\/span><span class=\"vc-badge\">Ideal statics only<\/span><\/div><\/header>\r\n<div class=\"vc-card\"><form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\"><div class=\"vc-form-grid\">\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-load\">Total applied vertical load <span class=\"vc-label-hint\">(kN; include all applicable factors before entry)<\/span><\/label><input class=\"vc-input\" id=\"vc-load\" inputmode=\"decimal\" type=\"text\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-config\">Idealized configuration<\/label><select class=\"vc-select\" id=\"vc-config\"><option value=\"\">Select\u2026<\/option><option value=\"single\">One eyebolt, load exactly axial<\/option><option value=\"pair\">Two identical legs, symmetric about vertical<\/option><\/select><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-angle\">Each leg angle from vertical <span class=\"vc-label-hint\">(degrees; enter 0 for axial)<\/span><\/label><input class=\"vc-input\" id=\"vc-angle\" inputmode=\"decimal\" type=\"text\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-wll\">Certified WLL per eyebolt for this exact direction\/configuration <span class=\"vc-label-hint\">(kN)<\/span><\/label><input class=\"vc-input\" id=\"vc-wll\" inputmode=\"decimal\" type=\"text\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-product\">Exact product \/ certificate \/ manufacturer rating source<\/label><input class=\"vc-input\" id=\"vc-product\" type=\"text\" maxlength=\"500\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-standard\">Standard, edition and amendment stated by controlled evidence<\/label><input class=\"vc-input\" id=\"vc-standard\" type=\"text\" maxlength=\"300\"><\/div>\r\n<div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-temp\">Service temperature <span class=\"vc-label-hint\">(\u00b0C)<\/span><\/label><input class=\"vc-input\" id=\"vc-temp\" inputmode=\"decimal\" type=\"text\"><\/div>\r\n<\/div><p id=\"vc-error\" role=\"alert\" style=\"margin:.75rem 0 0;color:#b42318\"><\/p><div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>Model boundary:<\/strong> only a static, coplanar, symmetric force balance is calculated. The entered WLL must already apply to the exact eyebolt, loading direction, temperature and installation. This check does not cover dynamics, shock, unequal sharing, side pull, bending, thread engagement, seating, shims, base strength, fatigue, corrosion or inspection.<\/p><\/div><\/form>\r\n<div class=\"vc-results\" id=\"vc-results\"><div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Static check<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">Copy<\/button><\/div><div class=\"vc-result-grid\"><div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Required line force per eyebolt<\/div><div class=\"vc-rcard-value\" id=\"vc-r-force\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Utilization of supplied WLL<\/div><div class=\"vc-rcard-value\" id=\"vc-r-util\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Static margin<\/div><div class=\"vc-rcard-value\" id=\"vc-r-margin\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Scope\/status<\/div><div class=\"vc-rcard-value\" id=\"vc-r-status\">\u2014<\/div><\/div><\/div><p id=\"vc-r-note\" style=\"margin:0;color:var(--vc-ink-secondary)\"><\/p><\/div><\/div>\r\n<div class=\"vc-section vc-open\"><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\">Evidence, equations and limits<\/span><\/span><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\"><h3>Publicly verifiable ISO scope<\/h3><p>The official <a href=\"https:\/\/www.iso.org\/standard\/36657.html\" target=\"_blank\" rel=\"noopener\">ISO catalogue record<\/a> lists ISO 3266:2010, edition 2, as Published and identifies Amendment 1:2015. Its public abstract covers one-piece forged steel eyebolts grade 4 for general lifting, axial and inclined loading, and a service-temperature range from \u221220 \u00b0C to 200 \u00b0C. It excludes non-one-piece-forged eyebolts and grade 4 eyebolts manufactured before publication.<\/p><h3>Static force model<\/h3><p>For one exactly axial eyebolt, line force is <strong>T = F<\/strong>. For two identical symmetric legs at angle \u03b8 from vertical, vertical equilibrium gives <strong>2T cos \u03b8 = F<\/strong>, so <strong>T = F \/ (2 cos \u03b8)<\/strong>. NASA&#8217;s official <a href=\"https:\/\/www.grc.nasa.gov\/www\/BGH\/vectpart.html\" target=\"_blank\" rel=\"noopener\">vector-components reference<\/a> documents the cosine resolution of a force vector.<\/p><div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>NEEDS_LICENSED_SOURCE:<\/strong> the former page attributed a 1.4 pair multiplier, a 45\u00b0 permission boundary, MBL = 4 \u00d7 WLL, marking requirements and nominal-size presets to ISO 3266. The open ISO record does not expose the clauses\/tables needed to verify those exact normative values, including the effect of Amd 1:2015. They have therefore been removed, not reconstructed from memory.<\/p><\/div><p>A result at or below 100% means only that the ideal static line force does not exceed the WLL supplied by the user for that exact configuration. A competent lifting-equipment person must verify the controlled standard, amendment, product certificate, manufacturer instructions, installation and lift plan.<\/p><\/div><\/div><\/div>\r\n<footer class=\"vc-footer\"><p>\u00a9 2024\u20132026 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a><\/p><p>Static force-resolution aid only; not a lift plan, product rating, inspection or approval. Scientific review: July 2026.<\/p><\/footer><\/div>\r\n<script>(function(){'use strict';function $(i){return document.getElementById(i)}var numeric=['vc-load','vc-angle','vc-wll','vc-temp'];function parseStrict(s){s=s.trim().replace(',','.');return \/^[+-]?(?:\\d+(?:\\.\\d*)?|\\.\\d+)$\/.test(s)?Number(s):NaN}function fmt(n,d){return n.toFixed(d)}function clear(){['vc-r-force','vc-r-util','vc-r-margin','vc-r-status'].forEach(function(id){$(id).textContent='\u2014'});$('vc-r-note').textContent='';$('vc-results').classList.remove('vc-visible')}function calc(){var load=parseStrict($('vc-load').value),angle=parseStrict($('vc-angle').value),wll=parseStrict($('vc-wll').value),temp=parseStrict($('vc-temp').value),config=$('vc-config').value,product=$('vc-product').value.trim(),standard=$('vc-standard').value.trim();var raw=numeric.map(function(id){return $(id).value.trim()});var any=raw.some(Boolean)||config||product||standard;if(!raw.every(Boolean)||!config||!product||!standard){clear();$('vc-error').textContent=any?'Complete all seven fields; zero is a valid explicit angle.':'';return}if(!Number.isFinite(load)||load<=0||!Number.isFinite(wll)||wll<=0||!Number.isFinite(angle)||!Number.isFinite(temp)){clear();$('vc-error').textContent='Use strict finite numbers; load and certified WLL must be greater than zero.';return}if(config==='single'&&angle!==0){clear();$('vc-error').textContent='The one-eyebolt model is axial only: enter exactly 0\u00b0.';return}if(config==='pair'&&(angle<0||angle>=90)){clear();$('vc-error').textContent='For the symmetric-pair statics model, angle from vertical must be at least 0\u00b0 and less than 90\u00b0.';return}var force=config==='single'?load:load\/(2*Math.cos(angle*Math.PI\/180)),util=force\/wll,margin=wll-force,scope=temp>=-20&&temp<=200;$('vc-error').textContent='';$('vc-r-force').textContent=fmt(force,6)+' kN';$('vc-r-util').textContent=fmt(util*100,3)+' %';$('vc-r-margin').textContent=(margin>=0?'+':'')+fmt(margin,6)+' kN';$('vc-r-status').textContent=!scope?'Outside published ISO temperature scope':(util<=1?'Within supplied rating by ideal statics only':'Exceeds supplied configuration rating');$('vc-r-note').textContent='Rating source: '+product+' | Controlled reference: '+standard+(scope?' | Temperature is within the public \u221220\u2026200 \u00b0C ISO scope.':' | No ISO-scope conclusion at this temperature.');$('vc-results').classList.add('vc-visible');var u=new URL(location),vals=[load,config,angle,wll,product,standard,temp],keys=['load_kn','configuration','angle_from_vertical_deg','certified_wll_kn','rating_source','controlled_reference','temperature_c'];keys.forEach(function(k,i){u.searchParams.set(k,String(vals[i]))});history.replaceState(null,'',u.toString())}$('vc-form').addEventListener('input',calc);$('vc-form').addEventListener('change',calc);$('vc-copy-btn').addEventListener('click',function(){if(navigator.clipboard)navigator.clipboard.writeText($('vc-results').innerText)});document.querySelectorAll('.vc-section-toggle').forEach(function(b){b.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});var p=new URLSearchParams(location.search),keys=['load_kn','configuration','angle_from_vertical_deg','certified_wll_kn','rating_source','controlled_reference','temperature_c'],ids=['vc-load','vc-config','vc-angle','vc-wll','vc-product','vc-standard','vc-temp'];keys.forEach(function(k,i){if(p.has(k))$(ids[i]).value=p.get(k)});calc()})();<\/script>\r\n","protected":false},"excerpt":{"rendered":"<p>Resolve ideal static force per eyebolt and compare it with the certified WLL for the exact product and loading configuration.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100087","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator\/100087","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":3,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator\/100087\/revisions"}],"predecessor-version":[{"id":102388,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator\/100087\/revisions\/102388"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/media?parent=100087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/categories?post=100087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/tags?post=100087"}],"curies":[{"name":"\u0412\u041f","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}