Specification for black bolts, screws and nuts, hexagon and square, with B.S.W. threads, and partly machined bolts, screws and nuts, hexagon and square, with B.S.W. or B.S.F. threads— 22 стр.
Specification for high strength friction grip bolts and associated nuts and washers for structural engineering, Higher grade bolts and nuts and general grade washers— 36 стр.