BS 2827:1957

Gives general dimensions and screw thread limits for square and hexagon machine screw nuts of the pressed type with B.A. threads, B.S.W., B.S.F. or other Whitworth form threads. The size ranges covered are from 6 B.A. to 0 B.A. inclusive, and from ^3/$d3$d2 in-48 Whitworth to 3/8 in B.S.W. and B.S.F.Cross References:BS 57BS 84BS 93BS 919BS 1083BS 1981