{"id":6797,"date":"2023-12-21T14:00:04","date_gmt":"2023-12-21T06:00:04","guid":{"rendered":"https:\/\/xzfastener.com\/?p=6797"},"modified":"2026-06-22T14:01:25","modified_gmt":"2026-06-22T06:01:25","slug":"metric-fastener-size-chart-for-procurement-and-engineering-teams","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/vi\/metric-fastener-size-chart-for-procurement-and-engineering-teams\/","title":{"rendered":"Metric Fastener Size Chart for Procurement and Engineering Teams"},"content":{"rendered":"<p>A metric fastener size chart helps procurement and engineering teams speak the same language. It reduces wrong RFQs, wrong thread matching, and last-minute assembly problems.<\/p>\n\n\n\n<p>In metric fasteners, size is usually written as <strong>M + nominal diameter \u00d7 pitch \u00d7 length<\/strong>. For example, <strong>M12 \u00d7 1.75 \u00d7 80<\/strong> means a 12 mm nominal diameter, 1.75 mm thread pitch, and 80 mm length.<\/p>\n\n\n\n<p>For buyers, the key is not only the \u201cM size.\u201d Pitch, length, grade, coating, and matching nuts or washers must also be confirmed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Basic Metric Fastener Size Chart<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Common Metric Sizes and Coarse Pitches<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Metric Size<\/th><th>Common Coarse Pitch<\/th><th>Typical Industrial Use<\/th><\/tr><\/thead><tbody><tr><td>M4<\/td><td>0.7 mm<\/td><td>Small covers, light brackets<\/td><\/tr><tr><td>M5<\/td><td>0.8 mm<\/td><td>Electronics, light machinery<\/td><\/tr><tr><td>M6<\/td><td>1.0 mm<\/td><td>Panels, brackets, general assembly<\/td><\/tr><tr><td>M8<\/td><td>1.25 mm<\/td><td>Equipment frames, supports<\/td><\/tr><tr><td>M10<\/td><td>1.5 mm<\/td><td>Machinery, construction hardware<\/td><\/tr><tr><td>M12<\/td><td>1.75 mm<\/td><td>Steel frames, base plates<\/td><\/tr><tr><td>M16<\/td><td>2.0 mm<\/td><td>Heavy equipment, structural joints<\/td><\/tr><tr><td>M20<\/td><td>2.5 mm<\/td><td>Large machinery, anchors<\/td><\/tr><tr><td>M24<\/td><td>3.0 mm<\/td><td>Heavy-duty structures and foundations<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>This chart is a starting point. Final selection should follow the drawing, project standard, or equipment manual.<\/p>\n\n\n\n<p>For common catalog items, review <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/standard-fasteners\/\">standard fasteners<\/a> and confirm whether the product follows DIN, ISO, ASTM, or a project drawing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Procurement Teams Should Confirm<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Size Alone Is Not Enough<\/h3>\n\n\n\n<p>A purchase request that says \u201cM12 bolt\u201d is incomplete. It can still lead to the wrong product.<\/p>\n\n\n\n<p>Confirm:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Product type: bolt, screw, nut, washer, stud, or anchor<\/li>\n\n\n\n<li>Diameter and length<\/li>\n\n\n\n<li>Thread pitch: coarse or fine<\/li>\n\n\n\n<li>Thread length: full thread or partial thread<\/li>\n\n\n\n<li>Grade: 4.8, 8.8, 10.9, 12.9, A2-70, etc.<\/li>\n\n\n\n<li>Surface finish: plain, zinc, HDG, zinc flake, black, stainless<\/li>\n\n\n\n<li>Matching nuts and washers<\/li>\n<\/ul>\n\n\n\n<p>For bolt sourcing, review <a href=\"https:\/\/xzfastener.com\/vi\/fastener-type\/bolts\/\">bolt products<\/a>. For washer matching, check <a href=\"https:\/\/xzfastener.com\/vi\/fastener-type\/washers\/\">washer products<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Engineering Checks Before Approval<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Match the Size to the Application<\/h3>\n\n\n\n<p>Engineering teams should consider load, vibration, corrosion, installation space, and maintenance frequency.<\/p>\n\n\n\n<p>For load-bearing assemblies, <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/high-strength-fasteners\/\">high-strength fasteners<\/a> may be required. For outdoor, marine, or humid environments, compare <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/various-coated-fasteners\/\">various coated fasteners<\/a> or stainless options.<\/p>\n\n\n\n<p>If the part has special head shape, long thread, shoulder diameter, or non-standard length, use <a href=\"https:\/\/xzfastener.com\/vi\/products-category\/custom-non-standard-fasteners\/\">custom non-standard fasteners<\/a> and provide a drawing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Final Advice<\/h2>\n\n\n\n<p>A metric fastener size chart is useful, but it should not replace a complete specification. Good purchasing data includes size, pitch, length, standard, grade, coating, matching parts, and application condition.<\/p>\n\n\n\n<p>For broader sourcing, review the full <a href=\"https:\/\/xzfastener.com\/vi\/home\/products\/\">fastener products<\/a> range before finalizing the RFQ.<\/p>","protected":false},"excerpt":{"rendered":"<p>A metric fastener size chart helps procurement and engineering teams speak the same language. It reduces wrong RFQs, wrong thread matching, and last-minute assembly problems. In metric fasteners, size is usually written as M + nominal diameter \u00d7 pitch \u00d7 length. For example, M12 \u00d7 1.75 \u00d7 80 means a 12 mm nominal diameter, 1.75 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[479],"tags":[482],"class_list":["post-6797","post","type-post","status-publish","format-standard","hentry","category-fastener-knowledge-library","tag-fastener-sizes-specifications"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/comments?post=6797"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6797\/revisions"}],"predecessor-version":[{"id":6798,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/6797\/revisions\/6798"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=6797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/categories?post=6797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/tags?post=6797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}