BS 1083 – Specification for precision hexagon bolts, screws and nuts (B.S.W. & B.S.F. threads)
Dimensions for bolts, screws, ordinary nuts, lock nuts, slotted nuts, castle nuts for ferrous and non-ferrous fasteners in nominal sizes 3/16 in to 2 in. Mechanical properties for steel fasteners in grades up to 75 tonf/in^2 minimum tensile strength. Gauges and tables of stock sizes of bolts and screws appended.