BS 3410:1961

Specifies requirements for materials, finish and dimensions for the following types of metal washers; small and large bright washers for use with B.A. and American Number size fasteners; small and large bright washers in heavy and light gauge for use with UNC, UNF, B.S.W. and B.S.F. fasteners; medium and large bright washers for automobile purposes for use with UNC, UNF, B.S.W. and B.S.F. fasteners; ordinary and large black washers; small light gauge black washers; round black washers with square holes for woodwork and timber constructions; square black washers with round holes; square or D-shaped taper washers.Cross References:BS 15BS 265BS 309BS 310BS 1449Replaces BS 1083:1951, BS 1981:1953, BS 2466:1954 and BS 2708:1956, and the requirements for washers in BS 57:1951, BS 325:1947, BS 916:1953 and BS 1769:1951.