BS EN ISO 10642:2019 PDF

What is ISO 10642 - Hexagon socket countersank head screws about?

ISO 10642 is an international standard on fasteners that discusses the best procedures and specifications required for manufacturing high-quality hexagon sockets countersunk head screws. ISO 10642 specifies the characteristics of hexagon socket countersunk head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M20, and with product grade A. NOTE 1: Other dimensional options are given in ISO 888, ISO 965-1 , and ISO 4753 . NOTE 2: The reduced loadability (related to the countersunk head dimensions in combination with penetration of the hexagon socket specified in this document) implies a limitation of ultimate tensile load; see Table 5. NOTE 3: Particular attention is needed to ensure alignment of the countersunk head with the bearing surface of the countersink in the assembly.