{"id":70084,"date":"2026-05-17T17:29:46","date_gmt":"2026-05-17T17:29:46","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/en-24017\/"},"modified":"2026-05-19T15:33:25","modified_gmt":"2026-05-19T15:33:25","slug":"en-24017","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/en-24017\/","title":{"rendered":"EN 24017"},"content":{"rendered":"<h2>Technical specification and scope of the EN 24017 standard<\/h2>\n<p>The international standard EN 24017 establishes strict requirements for the geometric parameters and performance characteristics of hexagon head bolts. The regulation covers products with metric threads in the diameter range from M1.6 to M64. The design is divided into accuracy classes: class A (for diameters M1.6\u2013M24 and nominal lengths \u2264 10d or 150 mm) and class B (for diameters over M24 or other dimensional parameters).<\/p>\n<p><em>Technical note:<\/em> This nomenclature of hexagon bolts is fully harmonized with the requirements of ISO 4014. A feature of the products is the presence of a partial thread cut in the upper part of the shank. The EV Group China stock program includes items with a nominal length of up to 200 mm, which complies with current industrial supply standards.<\/p>\n<p>When designing assemblies that require deviations from the base standard, EV Group China engineers recommend using specialized regulatory documents: ISO 724, ISO 888, ISO 898-1, ISO 965-1, ISO 3506-1, ISO 4753, and ISO 4759-1. These standards allow for the precise calculation of mechanical properties and tolerances for critical fastening connections.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[114],"class_list":["post-70084","wiki","type-wiki","status-publish","hentry","wiki_category-en"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/70084","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\/70084\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=70084"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=70084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}