{"id":69763,"date":"2026-05-17T17:28:02","date_gmt":"2026-05-17T17:28:02","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/ansi-asme-b18-2-6\/"},"modified":"2026-05-19T15:31:02","modified_gmt":"2026-05-19T15:31:02","slug":"ansi-asme-b18-2-6","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/ansi-asme-b18-2-6\/","title":{"rendered":"ANSI \/ ASME B18.2.6"},"content":{"rendered":"<h2>Scope of the ASME B18.2.6 standard<\/h2>\n<p>This regulatory document governs the geometric characteristics and dimensional parameters for five categories of inch-series fasteners standardized by the American National Standards Institute (ANSI). The list of controlled products includes:<\/p>\n<ul>\n<li>High-strength structural bolts with hex heads: ASTM A 325 and ASTM A 490.<\/li>\n<li>High-strength hex nuts: ASTM A 563 and ASTM A 194.<\/li>\n<li>Hardened steel washers (plain circular, clipped, and beveled): ASTM F436.<\/li>\n<li>Direct tension indicators (compressible-washer-type): ASTM F 959.<\/li>\n<li>Twist-off type tension control structural bolt assemblies: ASTM F 1852 and ASTM F 2280.<\/li>\n<\/ul>\n<p>The inclusion of sizes in the standard&#8217;s specifications does not guarantee their constant availability in serial production. EV Group China specialists recommend verifying current stock levels and the availability of specific items with our consultant engineers.<\/p>\n<h3>Technical requirements for dimensions<\/h3>\n<p>All metric values in the standard are presented in inches. The specified parameters are applicable to products without protective coatings. If galvanic or other coatings are required, the dimensional tolerances of the finished fasteners are subject to individual agreement between the customer and EV Group China. Geometric tolerances and symbols comply with the ASME Y14.5 system.<\/p>\n<h3>Operational parameters<\/h3>\n<p>Tolerances and parameters not explicitly described in the standard remain at the manufacturer&#8217;s discretion, unless otherwise stipulated in the contract specification between the buyer and the supplier.<\/p>\n<h3>Terminology base<\/h3>\n<p>For the correct interpretation of definitions regarding the dimensional characteristics and design features of fastener elements, one should be guided by the provisions of ASME B18.12.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[110],"class_list":["post-69763","wiki","type-wiki","status-publish","hentry","wiki_category-asme"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69763","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69763\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69763"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}