This Standard specifies the characteristics of hexalobular socket head cap screws with thread sizes from M2 up to and including M20, of product grade A. If, in special cases, specifications other than those listed in this International Standard are required, they should be selected from […]

This International Standard lays down the form and dimensions of thread undercuts for bolts, screws and similar externally threaded products, recommended for use in those cases where an undercut is needed for threaded components such as plugs, unless otherwise specified in the appropriate […]

This Japanese Industrial Standard specifies the steel slotted head screws (hereafter, referred to as “steel screws") , stainless steel slotted head screws (hereafter referred to as “stainless steel screws”) and nonferrous metal slotted head screws (hereafter referred to as “nonferrous met […]

1.1 This specification covers two types of quenched and tempered, alloy steel, heavy hex structural bolts having a tensile strength of 150 to 173 ksi. 1.2 These bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification […]

This standard specifies requirements for sizes M3 to M16 coarse and fine pitch thread hexagon weld nuts of product grade A, for use with bolts of property classes below 8.8 as specified in DIN EN ISO 898-1. Hexagon weld nuts with flange are specified in DIN 977.

This International Standard specifies ISO general purpose metric screw threads having the basic profile according to ISO 68, ISO general purpose screw threads - Basic profile.