Describes plating thicknesses and designation, sampling and other inspection procedures, and methods of thickness determination for components having threads specified in the following, BS 84 Parallel screw threads of Whitworth form, BS 93 British Association screw threads with tolerances for sizes 0 B.A. to 16 B.A., BS 811 Cycle threads, BS 2779 Fastening threads of B.S.P. sizes, BS 3643 ISO metric screw threads. Including general purpose bolts, screws and nuts.