{"id":6628,"date":"2023-10-19T11:38:00","date_gmt":"2023-10-19T03:38:00","guid":{"rendered":"https:\/\/xzfastener.com\/?p=6628"},"modified":"2026-06-18T11:39:21","modified_gmt":"2026-06-18T03:39:21","slug":"imperial-fastener-size-chart-for-importers-and-distributors","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/de\/imperial-fastener-size-chart-for-importers-and-distributors\/","title":{"rendered":"Imperiale Gr\u00f6\u00dfentabelle f\u00fcr Verbindungselemente f\u00fcr Importeure und H\u00e4ndler"},"content":{"rendered":"<p>Imperial fasteners are still widely used in the United States, Canada, and many maintenance markets supplied by U.S.-standard equipment. For importers and distributors, the main challenge is not only stocking inch sizes. It is identifying the correct diameter, thread series, length, grade, and matching parts before placing the order.<\/p>\n\n\n\n<p>A 1\/2 inch bolt and an M12 bolt may look close, but they are not interchangeable. The thread system must be confirmed first.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Imperial Fastener Sizes Mean<\/h2>\n\n\n\n<p>Imperial fasteners are usually specified by fractional diameter, thread count, and length. A common description looks like this:<\/p>\n\n\n\n<p><strong>1\/2\u201c-13 UNC \u00d7 2\u201c<\/strong><\/p>\n\n\n\n<p>Das bedeutet:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1\/2 inch nominal diameter<\/li>\n\n\n\n<li>13 F\u00e4den pro Zoll<\/li>\n\n\n\n<li>UNC Grobgewinde<\/li>\n\n\n\n<li>2 inch overall length<\/li>\n<\/ul>\n\n\n\n<p>For regular stock items, buyers can review <a href=\"https:\/\/xzfastener.com\/de\/products-category\/standard-fasteners\/\">Standardbefestigungen<\/a> und <a href=\"https:\/\/xzfastener.com\/de\/fastener-type\/bolts\/\">Bolzenprodukte<\/a> bevor Sie ein RFQ vorbereiten.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common Imperial Bolt Size Chart<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Nenngr\u00f6\u00dfe<\/th><th>Decimal Diameter<\/th><th>UNC Gewinde<\/th><th>UNF Gewinde<\/th><\/tr><\/thead><tbody><tr><td>#6<\/td><td>0.138 in<\/td><td>32 TPI<\/td><td>40 TPI<\/td><\/tr><tr><td>#8<\/td><td>0.164 in<\/td><td>32 TPI<\/td><td>36 TPI<\/td><\/tr><tr><td>#10<\/td><td>0.190 in<\/td><td>24 TPI<\/td><td>32 TPI<\/td><\/tr><tr><td>1\/4\u201d<\/td><td>0.250 in<\/td><td>20 TPI<\/td><td>28 TPI<\/td><\/tr><tr><td>5\/16\u201d<\/td><td>0.3125 in<\/td><td>18 TPI<\/td><td>24 TPI<\/td><\/tr><tr><td>3\/8\u201d<\/td><td>0.375 in<\/td><td>16 TPI<\/td><td>24 TPI<\/td><\/tr><tr><td>7\/16\u201d<\/td><td>0.4375 in<\/td><td>14 TPI<\/td><td>20 TPI<\/td><\/tr><tr><td>1\/2\u201d<\/td><td>0.500 in<\/td><td>13 TPI<\/td><td>20 TPI<\/td><\/tr><tr><td>5\/8\u201d<\/td><td>0.625 in<\/td><td>11 TPI<\/td><td>18 TPI<\/td><\/tr><tr><td>3\/4\u201d<\/td><td>0.750 in<\/td><td>10 TPI<\/td><td>16 TPI<\/td><\/tr><tr><td>7\/8\u201d<\/td><td>0.875 in<\/td><td>9 TPI<\/td><td>14 TPI<\/td><\/tr><tr><td>1\u201d<\/td><td>1.000 in<\/td><td>8 TPI<\/td><td>12 TPI<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>This chart is useful for first checking, but final orders should follow the required ASME, ASTM, SAE, or project standard.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">UNC vs UNF: Which One Should Buyers Stock?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">UNC Coarse Thread<\/h3>\n\n\n\n<p>UNC is common for general industrial use. It is easier to assemble, more tolerant of dirt or minor damage, and widely stocked.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UNF Fine Thread<\/h3>\n\n\n\n<p>UNF is often used where finer adjustment, stronger thread engagement, or vibration control is needed. It is common in automotive, machinery, and equipment repair markets.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Gewindetyp<\/th><th>Beste Verwendung<\/th><th>K\u00e4uferhinweis<\/th><\/tr><\/thead><tbody><tr><td>UNC<\/td><td>General assembly, maintenance, construction supply<\/td><td>Usually faster to source<\/td><\/tr><tr><td>UNF<\/td><td>Automotive, equipment repair, precision assemblies<\/td><td>Must confirm mating nut or tapped hole<\/td><\/tr><tr><td>Special inch thread<\/td><td>OEM or legacy equipment<\/td><td>Requires drawing or sample<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>For non-standard inch threads or special lengths, use <a href=\"https:\/\/xzfastener.com\/de\/products-category\/custom-non-standard-fasteners\/\">kundenspezifische, nicht standardm\u00e4\u00dfige Verbindungselemente<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">RFQ Checklist for Imperial Fasteners<\/h2>\n\n\n\n<p>Bevor Sie ein Angebot anfordern, stellen Sie Folgendes bereit:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Durchmesser und L\u00e4nge<\/li>\n\n\n\n<li>UNC, UNF, or special thread<\/li>\n\n\n\n<li>TPI value<\/li>\n\n\n\n<li>Head style and drive type<\/li>\n\n\n\n<li>Material und Qualit\u00e4t<\/li>\n\n\n\n<li>Oberfl\u00e4chenveredelung oder Beschichtung<\/li>\n\n\n\n<li>Passende Muttern und Unterlegscheiben<\/li>\n\n\n\n<li>Anforderungen an Verpackung und Kennzeichnung<\/li>\n<\/ol>\n\n\n\n<p>For complete sourcing, review the full <a href=\"https:\/\/xzfastener.com\/de\/home\/products\/\">Verbindungselemente<\/a> range. If washers are included, check <a href=\"https:\/\/xzfastener.com\/de\/fastener-type\/washers\/\">Waschmaschinenprodukte<\/a> for matching sizes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Abschlie\u00dfender Rat<\/h2>\n\n\n\n<p>Imperial fastener sourcing should never rely on visual comparison. Importers and distributors should confirm diameter, TPI, thread series, length, grade, finish, and matching parts before ordering. This prevents wrong-thread inventory and reduces customer complaints.<\/p>","protected":false},"excerpt":{"rendered":"<p>Imperial fasteners are still widely used in the United States, Canada, and many maintenance markets supplied by U.S.-standard equipment. For importers and distributors, the main challenge is not only stocking inch sizes. It is identifying the correct diameter, thread series, length, grade, and matching parts before placing the order. A 1\/2 inch bolt and an [&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-6628","post","type-post","status-publish","format-standard","hentry","category-fastener-knowledge-library","tag-fastener-sizes-specifications"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/posts\/6628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/comments?post=6628"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/posts\/6628\/revisions"}],"predecessor-version":[{"id":6629,"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/posts\/6628\/revisions\/6629"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/media?parent=6628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/categories?post=6628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/de\/wp-json\/wp\/v2\/tags?post=6628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}