{"id":14598,"date":"2026-10-29T14:48:31","date_gmt":"2026-10-29T06:48:31","guid":{"rendered":"https:\/\/sunhyings.com\/?p=14598"},"modified":"2026-10-29T14:48:31","modified_gmt":"2026-10-29T06:48:31","slug":"heavy-hex-bolts-vs-standard-hex-bolts-head-dimensions-standards-and-uses","status":"publish","type":"post","link":"https:\/\/sunhyings.com\/de\/blog\/heavy-hex-bolts-vs-standard-hex-bolts-head-dimensions-standards-and-uses\/","title":{"rendered":"Schwere Sechskantschrauben vs. Standard-Sechskantschrauben: Kopfdimensionen, Normen und Anwendungen"},"content":{"rendered":"\n<style>\n.sunhy-blog-article{max-width:100%;overflow-wrap:break-word}\n.sunhy-blog-article .sunhy-table-wrap{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}\n.sunhy-blog-article .sunhy-table-wrap table{width:100%;border-collapse:collapse;min-width:600px}\n.sunhy-blog-article .sunhy-table-wrap th,.sunhy-blog-article .sunhy-table-wrap td{padding:0.7em 0.85em;border:1px solid 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img{display:block;width:100%;height:auto;aspect-ratio:3\/2;object-fit:contain;background:#eaf0f4;border-radius:10px}.sunhy-blog-article .sunhy-editorial-figure figcaption{font-size:13px;line-height:1.65;color:#617685;padding:11px 3px}.sunhy-blog-article .sunhy-related-reading{background:#f4f8fb}.sunhy-blog-article .sunhy-related-reading ul{margin:0}.sunhy-blog-article .sunhy-reference-box{border-top:1px solid #dce5eb;background:#f8fafb;padding:22px;margin:32px 0;border-radius:8px;font-size:14px}.sunhy-blog-article .sunhy-reference-box h2{font-size:22px;background:none;border:0;padding:0;margin-top:0}\n@media(max-width:767px){.sunhy-blog-article{font-size:16px;line-height:1.75}.sunhy-blog-article h2{font-size:23px;margin-top:32px;padding:10px 13px}.sunhy-blog-article h3{font-size:19px}.sunhy-blog-article .sunhy-toc ol{columns:1}.sunhy-blog-article .sunhy-summary-box,.sunhy-blog-article .sunhy-warning-box,.sunhy-blog-article .sunhy-procurement-note,.sunhy-blog-article .sunhy-related-reading,.sunhy-blog-article .sunhy-cta,.sunhy-blog-article .sunhy-toc{padding:19px}.sunhy-blog-article .sunhy-table-wrap th,.sunhy-blog-article .sunhy-table-wrap td{padding:11px 13px}}\n\n.sunhy-blog-article .sunhy-faq details{border:1px solid #d4e1eb;border-radius:8px;background:#f7fafc;padding:17px 20px;margin:12px 0}.sunhy-blog-article .sunhy-faq summary{cursor:pointer;font-weight:700;color:#183f5c;line-height:1.5}.sunhy-blog-article .sunhy-faq details p{margin:14px 0 0}.sunhy-blog-article .sunhy-faq summary:focus-visible{outline:3px solid #bc842d;outline-offset:4px}\n<\/style>\n<article class=\"sunhy-blog-article\">\n  <aside class=\"sunhy-summary-box sunhy-added\" aria-label=\"Quick answer\"><p class=\"sunhy-box-label\">Quick answer<\/p><p>Heavy hex bolts have wider heads across the flats than standard hex bolts of the same nominal diameter. This changes the wrench or socket size needed for installation and can affect the clearance available around a bolted joint. It does not, by itself, make the bolt stronger or qualify it for structural service.<\/p><\/aside><nav class=\"sunhy-toc sunhy-added\" aria-label=\"Article contents\"><p class=\"sunhy-toc-title\">In this guide<\/p><ol><li><a href=\"#how-heavy-hex-and-standard-hex-head-dimensions-differ\">How Heavy Hex and Standard Hex Head Dimensions Differ<\/a><\/li><li><a href=\"#asme-b18-2-1-vs-b18-2-6-which-standard-applies\">ASME B18.2.1 vs B18.2.6: Which Standard Applies?<\/a><\/li><li><a href=\"#does-a-heavy-hex-head-make-a-bolt-stronger\">Does a Heavy Hex Head Make a Bolt Stronger?<\/a><\/li><li><a href=\"#when-to-use-heavy-hex-or-standard-hex-bolts\">When to Use Heavy Hex or Standard Hex Bolts<\/a><\/li><li><a href=\"#what-to-verify-before-substitution-or-purchase\">What to Verify Before Substitution or Purchase<\/a><\/li><li><a href=\"#sunhy-faq-14598\">Frequently asked questions<\/a><\/li><\/ol><\/nav>\n  <p>There is another distinction that matters when ordering: a general heavy hex bolt and a heavy hex structural bolt are not necessarily dimensioned to the same standard. For U.S. inch-series fasteners, ASME B18.2.1 covers general hex and heavy hex products, while ASME B18.2.6 addresses designated structural fasteners. The applicable product grade and connection specification must also be identified.<\/p>\n  <p>A correct comparison therefore involves more than deciding which head looks larger. The buyer needs to check the actual head dimensions, the governing dimensional standard, the required product grade, and whether a different bolt will fit and perform as intended in the assembly.<\/p>\n  <h2 id=\"how-heavy-hex-and-standard-hex-head-dimensions-differ\">How Heavy Hex and Standard Hex Head Dimensions Differ<\/h2>\n  <p>The most recognizable difference is the head&#8217;s width across flats, often abbreviated as AF. This is the distance between two opposite flat faces of the hexagon and is the dimension used to identify the corresponding wrench opening.<\/p>\n  <p>For several common inch-series nominal diameters, a heavy hex head has a basic across-flats width 1\/8 inch (0.125 in) greater than a standard hex head. The nominal diameter still refers to the bolt&#8217;s threaded shank, not its head.<\/p>\n  <p>The following values illustrate the difference.<\/p>\n  <div class=\"sunhy-table-wrap\" role=\"region\" aria-label=\"Hex bolt head across-flats dimensional comparison\" tabindex=\"0\">\n    <table>\n      <caption>Representative basic width across flats, in inches<\/caption>\n      <thead><tr><th scope=\"col\">Nominal bolt diameter<\/th><th scope=\"col\">Standard hex AF (in)<\/th><th scope=\"col\">General heavy hex AF (in)<\/th><th scope=\"col\">Heavy hex structural AF (in)<\/th><\/tr><\/thead>\n      <tbody>\n        <tr><th scope=\"row\">1\/2 in<\/th><td>0.750<\/td><td>0.875<\/td><td>0.875<\/td><\/tr>\n        <tr><th scope=\"row\">3\/4 in<\/th><td>1.125<\/td><td>1.250<\/td><td>1.250<\/td><\/tr>\n        <tr><th scope=\"row\">1 in<\/th><td>1.500<\/td><td>1.625<\/td><td>1.625<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n  <p><em>Dimensional basis: published ASME B18.2.1 reference dimensions for general hex products, cross-checked against structural heavy hex reference dimensions identified with ASME B18.2.6-2019. Values are basic\/reference across-flats dimensions, not complete manufacturing tolerance limits or a receiving-inspection table. The applicable standard edition and product drawing govern acceptance.<\/em><\/p>\n  <p>For a 3\/4-inch bolt, the standard hex reference width is 1.125 inches, while the heavy hex width is 1.250 inches. That difference requires a different wrench opening, even though both bolts may have the same nominal shank diameter.<\/p>\n  <p>The distinction becomes important when the bolt is close to a housing, a structural member, a pipe support, or another fastener. A heavy hex head may fit in the available space while leaving too little room for the installation tool.<\/p>\n  <p>Three dimensions need separate attention:<\/p>\n  <p><strong>Width across flats<\/strong> determines the nominal wrench opening. A standard hex tool may not fit the wider heavy hex head, even when the bolt diameter and thread match.<\/p>\n  <p><strong>Width across corners<\/strong> is the maximum diagonal envelope of the hexagon. It matters when checking clearance near adjacent components or allowing a socket to pass into a confined space. The socket&#8217;s outside diameter may require substantially more space than the bolt head itself.<\/p>\n  <p><strong>Head height<\/strong> determines the axial space occupied by the head and influences access for a suitable tool. It should not be inferred simply from the word <em>heavy<\/em>.<\/p>\n  <h3>A heavy hex head is not always taller<\/h3>\n  <p>The larger across-flats dimension does not mean that every heavy hex head has greater height.<\/p>\n  <p>For example, published reference dimensions for 3\/4-inch standard hex and general heavy hex products both give a head-height range of 0.455\u20130.524 inches. A corresponding ASME B18.2.6-2019 heavy hex structural reference gives 0.455\u20130.483 inches.<\/p>\n  <p>These values illustrate an important distinction: general heavy hex bolts and heavy hex structural bolts can share the same basic across-flats width while having different head-height limits.<\/p>\n  <p>The ranges are reference data for the specified product categories and editions, not universal tolerances for every hex-head fastener.<\/p>\n  <p>This is why a purchasing specification should identify the exact head style and dimensional standard rather than request a \u201clarge hex head\u201d or assume that any heavy hex bolt meets structural dimensions.<\/p>\n  <aside class=\"sunhy-warning-box sunhy-added\" aria-label=\"Important specification check\"><p class=\"sunhy-box-label\">Important specification check<\/p><p>The comparison also concerns U.S. inch-series fasteners. Metric hex-head and structural fasteners require their own applicable ISO or other project-specified dimensional standards; an inch-series table cannot establish metric interchangeability.<\/p>\n<p class=\"sunhy-engineering-example sunhy-added\" data-example=\"1\">In an illustrative maintenance order, a bolt has the correct thread but its heavy-hex head cannot enter the available socket recess. Nominal diameter did not define the tool envelope. Check across-flats size, across-corners clearance and head height against the actual drawing before replacement. Use <a href=\"https:\/\/sunhyings.com\/blog\/how-to-measure-hex-bolt-dimensions\/\">bolt measurement methods<\/a> to separate thread size from wrench size.<\/p>\n<\/aside>\n  <h2 id=\"asme-b18-2-1-vs-b18-2-6-which-standard-applies\">ASME B18.2.1 vs B18.2.6: Which Standard Applies?<\/h2>\n  <p>The two standards serve different product scopes, and this distinction affects both manufacturing requirements and procurement.<\/p>\n  <h3>ASME B18.2.1: General inch-series hex products<\/h3>\n  <p><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b18-2-1-square-hex-heavy-hex-askew-head-bolts-hex-heavy-hex-hex-flange-lobed-head-lag-screws\/2012\/print-book\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ASME B18.2.1-2012 (R2021)<\/a> covers dimensions for several types of square and hex bolts and screws, including general hex and heavy hex configurations.<\/p>\n  <p>It provides a dimensional framework for identifying relevant product types and their head, body, and related dimensional requirements.<\/p>\n  <p>However, the specification must still identify the intended product form. A <a href=\"https:\/\/sunhyings.com\/blog\/hex-head-bolts-the-complete-guide\/\">hex bolt and a hex cap screw<\/a> should not automatically be treated as identical simply because both have six-sided heads.<\/p>\n  <p>A general heavy hex bolt dimensioned under B18.2.1 should not be assumed to satisfy every dimensional requirement of a heavy hex structural bolt under B18.2.6.<\/p>\n  <h3>ASME B18.2.6: Heavy hex structural bolts<\/h3>\n  <p><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b18-2-6-fasteners-use-structural-applications-supplement\/2019\/pdf\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ASME B18.2.6-2019<\/a> covers designated structural fasteners, including heavy hex structural bolts and related structural fastening components within its stated scope.<\/p>\n  <p>Its structural bolt requirements must be applied to the correct product category. Head height, bolt configuration, and thread-length provisions may differ from the corresponding general heavy hex products.<\/p>\n  <p>For an engineer reviewing replacement hardware, this matters beyond the visible head width. A replacement may accept the correct wrench but have a different threaded portion or other dimensional feature that affects the specified assembly.<\/p>\n  <p>The dimensional standard is only one part of the product identity. It does not establish the material&#8217;s tensile strength, the specified bolt grade, or the installed joint&#8217;s required pretension.<\/p>\n  <h3>ASTM F3125 and RCSC have different responsibilities<\/h3>\n  <p>For applicable high-strength structural bolts, ASTM F3125\/F3125M addresses product requirements, including the relevant grade, type, style, and mechanical or material characteristics within its scope.<\/p>\n  <p>The ASTM F3125\/F3125M-26 standard catalog identifies structural bolt product categories including Grade A325 and Grade A490. Where that edition is applicable, the precise product classification still matters. A head described as <em>heavy hex<\/em> does not independently establish its ASTM grade or type.<\/p>\n  <p>RCSC&#8217;s 2025 <em>Specification for Structural Joints Using High-Strength Bolts<\/em> addresses the design, installation, and inspection of qualifying structural bolted joints.<\/p>\n  <p>These documents should not be substituted for one another:<\/p>\n  <ul>\n    <li>The ASME dimensional standard establishes the relevant bolt geometry.<\/li>\n    <li>The ASTM product specification establishes applicable requirements for the specified fastener product.<\/li>\n    <li>The RCSC specification governs qualifying structural connections, including relevant installation and inspection provisions.<\/li>\n  <\/ul>\n  <p>A purchase order may need all three levels of identification, depending on the application. Passing a head-dimension check alone is not proof that a bolt meets the required ASTM product specification or that its installation satisfies the joint design.<\/p>\n  <p>The applicable editions should come from the governing project documents. The latest published edition is not automatically the edition incorporated into an existing contract.<\/p>\n  <figure class=\"sunhy-editorial-figure sunhy-added\"><img loading=\"lazy\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2026\/10\/a325-heavy-hex-bolt-dimensional-inspection-sunhy.webp\" alt=\"Caliper measuring a heavy hex bolt head beside a steel rule\" width=\"1536\" height=\"1024\" loading=\"lazy\" decoding=\"async\" class=\"wp-image-14632\" title=\"Heavy hex vs standard hex bolts \u2014 illustrative inspection view\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2026\/10\/a325-heavy-hex-bolt-dimensional-inspection-sunhy.webp 1536w, https:\/\/sunhyings.com\/wp-content\/uploads\/2026\/10\/a325-heavy-hex-bolt-dimensional-inspection-sunhy-800x533.webp 800w, https:\/\/sunhyings.com\/wp-content\/uploads\/2026\/10\/a325-heavy-hex-bolt-dimensional-inspection-sunhy-1024x683.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2026\/10\/a325-heavy-hex-bolt-dimensional-inspection-sunhy-768x512.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2026\/10\/a325-heavy-hex-bolt-dimensional-inspection-sunhy-18x12.webp 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><figcaption>Caliper measuring a heavy hex bolt head beside a steel rule. Illustrative arrangement; appearance does not establish grade or product conformity.<\/figcaption><\/figure><h2 id=\"does-a-heavy-hex-head-make-a-bolt-stronger\">Does a Heavy Hex Head Make a Bolt Stronger?<\/h2>\n  <p>Not necessarily. A larger hex head does not establish a higher tensile-strength grade or greater allowable bolt load.<\/p>\n  <p>Bolt tensile behavior is associated with properties such as the specified material and mechanical grade, the effective tensile-stress area, and the requirements of the applicable product specification. The width of the wrenching head is not a substitute for those properties.<\/p>\n  <p>A wider head can change the geometry of the bearing interface. Depending on the actual under-head bearing surface, washer arrangement, and mating material, this may affect how compressive contact forces are distributed.<\/p>\n  <p>But a larger head does not guarantee lower bearing stress throughout the entire joint. The effective contact area depends on the actual surfaces in contact, not simply the hexagon&#8217;s overall width.<\/p>\n  <p>The same limitation applies to bolt pretension.<\/p>\n  <p>Pretension is produced by the specified installation process and the resulting bolt elongation. It is affected by the fastener assembly, joint conditions, and installation method. Increasing the head width alone does not establish a higher pretension.<\/p>\n  <p>For a structural connection requiring pretension, the installation and verification method must follow the applicable project and RCSC requirements. A wider head or a larger wrench cannot replace those requirements.<\/p>\n  <p>Consider two bolts with matching nominal diameters but different head styles. If their product grades, material requirements, or specified assembly conditions differ, their suitability cannot be established by comparing head dimensions. Conversely, two bolts with similar mechanical-strength designations are not necessarily interchangeable if their geometric or assembly requirements differ.<\/p>\n  <p>The useful engineering distinction is that head geometry affects tool engagement and local fit, while product grade and the complete connection design determine whether the bolt is acceptable for the intended service.<\/p>\n<p class=\"sunhy-engineering-example sunhy-added\" data-example=\"2\">A hypothetical buyer selects a wider head to obtain a stronger bolt while leaving the product grade unspecified. Head geometry cannot establish material or mechanical conformity. Define the required grade separately, confirm the dimensional product standard and review the mating parts. The <a href=\"https:\/\/sunhyings.com\/blog\/understanding-bolt-grades\/\">bolt-grade guide<\/a> is background for the grade terminology, not approval of the proposed joint.<\/p>\n\n  <h2 id=\"when-to-use-heavy-hex-or-standard-hex-bolts\">When to Use Heavy Hex or Standard Hex Bolts<\/h2>\n  <p>The correct selection begins with the assembly specification, not the assumption that one head style is universally better.<\/p>\n  <p>For general mechanical equipment, a standard hex bolt or hex cap screw may be suitable when it satisfies the specified product requirements and provides the required installation access. Its smaller head envelope can be useful where fasteners are close to surrounding equipment, guards, brackets, or other components.<\/p>\n  <p>This does not mean a standard hex bolt is appropriate for every mechanical connection, or that it is inherently weaker than a heavy hex bolt. The specified grade, dimensions, and service requirements remain decisive.<\/p>\n  <p>Heavy hex bolts are relevant where the equipment specification, original design, or mating hardware calls for that geometry. Their wider heads require a corresponding wrench or socket, and the surrounding structure must provide adequate installation clearance.<\/p>\n  <p>For structural steel connections requiring heavy hex structural bolts, selection is more restrictive. The engineer and buyer must confirm the specified structural bolt product, applicable grade and style, dimensional requirements, and compatible assembly components.<\/p>\n  <p>It is not sufficient to replace a specified structural bolt with a general-purpose heavy hex bolt solely because both use the same nominal diameter and wrench size.<\/p>\n  <h3>Example: A 3\/4-inch replacement bolt in a confined assembly<\/h3>\n  <p><em>Illustrative hypothetical example \u2014 not a SUNHY customer installation or test result.<\/em><\/p>\n  <p>Suppose a machine assembly originally uses a 3\/4-inch standard hex bolt with a 1.125-inch basic across-flats head width. A replacement supplier proposes a 3\/4-inch heavy hex bolt with a 1.250-inch basic across-flats width.<\/p>\n  <p>The nominal diameter remains 3\/4 inch, but the head is 0.125 inch wider across flats.<\/p>\n  <p>That creates an immediate tooling difference. The original 1-1\/8-inch nominal wrench opening is not appropriate for the proposed 1-1\/4-inch heavy hex head.<\/p>\n  <p>If the bolt is recessed or near another component, the installer must also check the outside diameter of the larger socket and the space needed to position and operate it. The 0.125-inch difference between basic across-flats dimensions is not itself the total additional installation clearance required.<\/p>\n  <p>There is a second, less visible question: does the proposed replacement satisfy the original bolt&#8217;s product and dimensional requirements?<\/p>\n  <p>The buyer would need to compare the material or product grade, thread series and class, required threaded length, applicable dimensions, and any relevant washer or nut requirements. If the original bolt belongs to a structural connection, the governing structural design and substitution approval requirements also apply.<\/p>\n  <p>The example demonstrates why a replacement can appear dimensionally similar at the threaded shank while still being unsuitable for the original installation.<\/p>\n  <p>The same reasoning works in reverse. Replacing a specified heavy hex structural bolt with a smaller standard hex bolt should not be approved merely because it passes through the same bolt hole.<\/p>\n  <h2 id=\"what-to-verify-before-substitution-or-purchase\">What to Verify Before Substitution or Purchase<\/h2>\n  <p>An RFQ that requests only \u201c3\/4-inch hex bolts\u201d leaves the supplier to infer several important specifications.<\/p>\n  <p>The order should establish the required fastener identity before price or availability is compared.<\/p>\n  <p>For a general hex or heavy hex fastener, the essential information includes the nominal diameter, thread series and class, <a href=\"https:\/\/sunhyings.com\/blog\/how-to-measure-hex-bolt-dimensions\/\">bolt length<\/a>, head style, governing dimensional standard and edition, and applicable material or mechanical grade.<\/p>\n  <p>Where the head geometry is important to installation, the buyer should identify the required across-flats dimension or provide the applicable controlled drawing. A drawing becomes particularly useful for restricted-access assemblies or replacements involving older equipment.<\/p>\n  <p>For heavy hex structural bolts, the specification should also identify the relevant ASTM F3125 grade, type and style as applicable, together with the project-governing structural bolting requirements.<\/p>\n  <p>Nuts and washers must be considered as part of the specified assembly, not selected only because their nominal threads appear to match. Coating, thread fit, and lubrication requirements may also affect whether the supplied components form an acceptable assembly.<\/p>\n  <p>These considerations become especially important for coated structural fasteners, where the governing product and installation requirements may address compatible nuts, washers, and preparation conditions.<\/p>\n  <h3>What should the buyer request for inspection?<\/h3>\n  <p>The inspection requirements should follow the purchase specification rather than an arbitrary list of documents.<\/p>\n  <p>Relevant evidence may include dimensional inspection records, material or mechanical-test documentation, manufacturer identification, product marking verification, and records supporting the required batch or lot traceability.<\/p>\n  <p>A certificate of conformity, material test report, dimensional inspection record, and installed-joint inspection report serve different purposes. None automatically replaces the others.<\/p>\n  <p>For example, a report identifying a steel heat does not by itself establish that finished bolt heads comply with the specified dimensional tolerances. Similarly, a compliant finished product does not prove that the installed structural joint received the required pretension.<\/p>\n  <p>Before accepting a proposed substitute, the engineer or buyer should be able to answer a few concrete questions: Does the new bolt comply with the specified dimensional standard? Does its product grade meet the governing requirements? Is the head and thread configuration correct? Can the existing tools and mating components accommodate it? If the assembly is structurally controlled, has the substitution been reviewed under the applicable design and project requirements?<\/p>\n  <p>If any of these questions remain unresolved, matching nominal diameter alone is not an adequate basis for approval.<\/p>\n  <p>For buyers preparing a structural-bolt RFQ, SUNHY&#8217;s <a href=\"https:\/\/sunhyings.com\/fasteners\/bolts\/structural-bolts\/\">Structural Bolts product category<\/a> provides the relevant commercial starting point. Supply scope, required grades, actual dimensions, and supporting documentation should be confirmed against the specific inquiry rather than inferred from a general technical article.<\/p>\n  <p>When requesting a dimensional or purchasing review, provide the governing specification, required head style, bolt size and length, product grade, coating, quantity, and any available assembly drawing. This gives the supplier enough information to identify potential dimensional or specification conflicts before an order is placed.<\/p>\n<aside class=\"sunhy-related-reading sunhy-added\" aria-label=\"Related technical reading\"><p class=\"sunhy-box-label\">Related technical reading<\/p><ul><li><a href=\"https:\/\/sunhyings.com\/fasteners\/bolts\/structural-bolts\/\">Structural bolt specification and enquiry<\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/blog\/hex-nut-grades-explained\/\">Hex nut grades and selection checks<\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/blog\/hex-nut-dimensions-guide\/\">Nut dimensions and head-clearance checks<\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/blog\/traceability-for-automotive-fasteners\/\">Fastener lot control and inspection-record principles<\/a><\/li><\/ul><\/aside>\n<section class=\"sunhy-faq sunhy-added\" aria-labelledby=\"sunhy-faq-14598\"><h2 id=\"sunhy-faq-14598\">Frequently asked questions<\/h2><details><summary>Does a heavy hex head mean higher strength?<\/summary><p>No. Head size is dimensional. The material and mechanical grade, applicable product specification and supporting records establish separate requirements.<\/p><\/details><details><summary>Is a heavy hex head always taller?<\/summary><p>Do not assume it. Compare the applicable dimensional limits for the exact product, size and standard; width and height do not change identically.<\/p><\/details><details><summary>Can standard and heavy hex bolts share the same socket?<\/summary><p>Check the actual across-flats dimensions. Equal nominal thread diameter does not guarantee equal wrench size or available installation clearance.<\/p><\/details><\/section>\n<\/article>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"@id\": \"https:\/\/sunhyings.com\/blog\/heavy-hex-bolts-vs-standard-hex-bolts-head-dimensions-standards-and-uses\/#faq\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does a heavy hex head mean higher strength?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. Head size is dimensional. The material and mechanical grade, applicable product specification and supporting records establish separate requirements.\"}}, {\"@type\": \"Question\", \"name\": \"Is a heavy hex head always taller?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not assume it. Compare the applicable dimensional limits for the exact product, size and standard; width and height do not change identically.\"}}, {\"@type\": \"Question\", \"name\": \"Can standard and heavy hex bolts share the same socket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check the actual across-flats dimensions. Equal nominal thread diameter does not guarantee equal wrench size or available installation clearance.\"}}]}<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Abmessungen von Schwerlast-Sechskantschraubenk\u00f6pfen und Standard-Sechskantschraubenk\u00f6pfen vergleichen, ASME B18.2.1 vs. B18.2.6, und was vor einem Austausch oder Kauf von Konstruktionsschrauben zu pr\u00fcfen ist.<\/p>","protected":false},"author":1,"featured_media":14629,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-14598","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-selection-comparison"],"_links":{"self":[{"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/posts\/14598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/comments?post=14598"}],"version-history":[{"count":3,"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/posts\/14598\/revisions"}],"predecessor-version":[{"id":14696,"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/posts\/14598\/revisions\/14696"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/media\/14629"}],"wp:attachment":[{"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/media?parent=14598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/categories?post=14598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sunhyings.com\/de\/wp-json\/wp\/v2\/tags?post=14598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}