{"id":69828,"date":"2026-05-17T17:28:23","date_gmt":"2026-05-17T17:28:23","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/iso-7380\/"},"modified":"2026-05-19T15:31:32","modified_gmt":"2026-05-19T15:31:32","slug":"iso-7380","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/iso-7380\/","title":{"rendered":"ISO 7380"},"content":{"rendered":"<h2>Technical parameters and performance characteristics of ISO 7380 screws<\/h2>\n<p>The international standard ISO 7380 regulates the design features and manufacturing tolerances of button head screws with a hexagon socket. This specification is the current revision, which has replaced previous versions of the document and establishes unified requirements for the geometry of fasteners.<\/p>\n<p>EV Group China supplies high-quality fasteners that meet the requirements of the ISO 7380 standard. The products are intended for detachable connections where an aesthetic head appearance and high torque transmission through the hexagon socket are required.<\/p>\n<h3>Geometric parameters and nomenclature<\/h3>\n<p>The standard covers metric screws with nominal thread diameters from M3 to M16 inclusive. The products offered by EV Group China are manufactured with high precision (grade A), ensuring a reliable fit in mating parts.<\/p>\n<h3>Mechanical properties and strength classes<\/h3>\n<p>To ensure the reliability of fastening assemblies, the screws are supplied in various strength classes, allowing engineers to select optimal solutions for specific operational loads:<\/p>\n<ul>\n<li>Strength class 8.8: a standard solution for general industrial tasks.<\/li>\n<li>Strength class 10.9: for high-load connections.<\/li>\n<li>Strength class 12.9: for critical assemblies with extreme mechanical requirements.<\/li>\n<\/ul>\n<p>Please note that according to ISO 7380, this type of fastener has limited load-bearing capacity compared to standard socket head cap screws, which is due to the geometry of the button head.<\/p>\n<h3>Regulatory framework and related standards<\/h3>\n<p>The design and quality control of the screws are carried out in accordance with a set of international standards that define the requirements for threaded connections:<\/p>\n<ul>\n<li>ISO 261: General purpose metric screw threads.<\/li>\n<li>ISO 888: Nominal lengths for bolts, screws and studs and thread lengths for general purpose bolts.<\/li>\n<li>ISO 898-1: Mechanical properties of fasteners made of carbon steel and alloy steel.<\/li>\n<li>ISO 965-2: Tolerances for general purpose metric screw threads (medium quality).<\/li>\n<li>ISO 3506-1: Mechanical properties of corrosion-resistant stainless steel fasteners (austenitic grades).<\/li>\n<li>ISO 4759-1: Tolerances for fasteners (grades A, B and C).<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[120],"class_list":["post-69828","wiki","type-wiki","status-publish","hentry","wiki_category-iso"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69828","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\/69828\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69828"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}