BS 3401:1961

This standard BS 3401:1961 Specification for beryllium copper crinkle washers is classified in these ICS categories:

• 21.060.30 Washers, locking elements

This standard specifies dimensions and tolerances and general requirements for a range of beryllium copper crinkle washers suitable for use with screwed fasteners in sizes from 0.060 in (American No. 0) to ¾ in (1.5 mm to 19 mm) nominal diameter.

Specifies dimensions and tolerances and general requirements, including material, test and sampling procedure, for a range of beryllium copper crinkle washers suitable for use with screwed fasteners in sizes from 0.060 in (American No. 0 and 10 B.A.) to ¾ in nominal diameter.