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 standard provides essential specifications and dimensions for the gages used on Unified inch screw threads (UN and UNR thread form), and covers the specifications and dimensions for the thread gages and measuring equipment listed in Tables 1 and 2. (lFI Note: Same as Tables 1 and 2 o […]

1.1 This specification covers the chemical and mechanical requirements for stainless steel metric socket head cap screws (SHCS) with nominal thread M 1.6 through M 36 and intended for use in applications requiring general corrosion resistance. 1.2 Two groups of stainless steel alloys are […]

This standard specifies requirements for external tab washers (previously known as locking tab washers), which are used in threaded fastenings. They are intended to prevent the fastening loosening off. The washer's effectiveness depends on the design conditions of the particular case and […]

This International Standard specifies the characteristics of cross recessed pan head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.

The following amendments have been made in comparison with the August 1972 edition. a) Size M1,8 has been deleted because there is no demand for it. b) The previous design m as specified in DIN 267 Part 2, April 1968 edition, has been replaced by product grade F as specified in DIN 267 Pa […]