{"id":66963,"date":"2026-04-20T13:34:06","date_gmt":"2026-04-20T13:34:06","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/din-939\/"},"modified":"2026-04-20T13:42:13","modified_gmt":"2026-04-20T13:42:13","slug":"din-939","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/din-939\/","title":{"rendered":"DIN 939"},"content":{"rendered":"<h2>Technical specifications and application range of DIN 939 studs<\/h2>\n<p>DIN 939 is an international industrial standard governing the production of threaded studs with a screwing-in end (the length of the screwing-in part is 1.25d). Fasteners of this type are designed to create high-strength detachable connections in mechanical engineering, heavy industry, and metal structure assembly. EV Group China supplies studs that meet strict tolerances for thread precision and geometric stability.<\/p>\n<p>Depending on the operating conditions, DIN 939 studs are manufactured from carbon steels with subsequent protective coating (galvanized zinc) or from corrosion-resistant grades (stainless steel A2, A4). The use of special alloys, such as brass, is permissible for instrumentation needs.<\/p>\n<h3>Classification and manufacturing materials<\/h3>\n<p>EV Group China offers DIN 939 studs classified by strength class and chemical composition of the material:<\/p>\n<ul class=\"list-unstyled\">\n<li><strong>Strength classes:<\/strong> 4.8, 5.8, 8.8, 10.9 for carbon steels.<\/li>\n<li><strong>Stainless steels:<\/strong> Austenitic grades A2 (analogous to 08Kh18N10) and A4 (analogous to 10Kh17N13M2) for environments with increased chemical activity.<\/li>\n<li><strong>Protective coating:<\/strong> Standard electrolytic galvanizing to improve anti-corrosion characteristics in atmospheric conditions.<\/li>\n<li><strong>Alloys:<\/strong> Brass products for use in non-magnetic assemblies and high-humidity conditions.<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[116,122],"class_list":["post-66963","wiki","type-wiki","status-publish","hentry","wiki_category-din","wiki_category-standarty"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/66963","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\/66963\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=66963"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=66963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}