Relates to such as snap, pan, mushroom, flat and various countersunk headed types. Nominal diameters and lengths are defined with permissible variations in shank diameters. These rivets are made from mild steel, copper, brass, a range of aluminium alloys and pure aluminium. Details of Reaper rivets are included. Tables of stock lengths are also given. Coopers' flat head rivets 4 in. diameter and below are included in an appendix.