{"id":66944,"date":"2026-04-20T13:34:01","date_gmt":"2026-04-20T13:34:01","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/din-6921\/"},"modified":"2026-04-20T13:42:05","modified_gmt":"2026-04-20T13:42:05","slug":"din-6921","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/din-6921\/","title":{"rendered":"DIN 6921"},"content":{"rendered":"<p><strong>Important note:<\/strong> The DIN 6921 standard is officially considered obsolete and has been completely replaced by the international regulation DIN EN 1665:1998-11. When designing new assemblies and creating specifications, it is recommended to use the current version of the regulatory document.<\/p>\n<h2>Technical description and scope<\/h2>\n<p>This standard regulates the geometric parameters and technical requirements for hexagon flange bolts belonging to accuracy class &#8220;A&#8221;. The products are intended for critical threaded connections where reliable fixation and uniform load distribution on the contact surface are required without the use of additional washers.<\/p>\n<p>Technical specifications cover bolts with a nominal metric thread diameter (coarse and fine pitch) in the range from M5 to M20. EV Group China specialists point out: in cases where operating conditions require deviations from standard parameters (non-standard length, specific strength classes, or special materials), technical conditions are determined individually based on current engineering standards.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[116,122],"class_list":["post-66944","wiki","type-wiki","status-publish","hentry","wiki_category-din","wiki_category-standarty"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/66944","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\/66944\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=66944"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=66944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}