BS 1210:1963

Materials, dimensions, tolerances, designation criteria for screws of steel, stainless steel, brass, aluminium, silicon bronze, nickel copper alloy. Suitable finishes. Preferred and supplementary sizes for countersunk head, round head and raised countersunk head screws, for both slotted and recessed head types. Recess penetration gauging appended.Cross References:BS 18BS 350BS 729:Part 2BS 1224 BS 1448BS 1473BS 1554BS 1615BS 1706BS 1872BS 2873BS 3075BS 3189