Specifies requirements for a rationalized series of hexagon bolts, screws and nuts in diameters from 1/4 in to 6 in in diameter manufactured by cold or hot forging processes. Dimensional and property details are given in inches but an appendix gives the equivalent values in metric units.
Black bolts, screws and nuts (hexagon and square with BSW threads) andpartly machined bolts, screws and nuts (hexagon and square with BSW orBSF threads)
