This British Standard specifies cadmium and zinc plating thicknesses, sampling and other inspection procedures, and methods of thickness determination for components having threads of basic major diameters from 0-060 in to 3/4 in, inclusive, specified in the following standards:
B.S. 84. Parallel screw threads of Whitworth form.
B.S. 93. British Association (B.A.) screw threads (sizes 0 B.A. to 16 B.A.)
B.S. 811. Cycle threads.
B.S. 1580. Unified screw threads.
B.S. 1095. Metric screw threads, systeme intermational.
B.S. 2779. Fastening threads of BSP sizes.
This standard does not specify plating thickness, sampling and other inspection procedures and methods of thickness determination for components such as self-tapping screws and wood screws(e.g.B.S.1210).
The standard refers in particular to the threaded components specified in the following standards. It does not apply to components for aircraft.
a. Bolts and screws--general purpose.
B.S. 57, B.S. 450, B.S. 1083,B.S. 1768,B.S. 1981,B.S. 3155.
b. Nuts--general purpose.
B.S. 57, B.S. 450, B.S. 1083,B.S. 1768,B.S. 1981,B.S. 3155.