[airmac]

Re Rivet sizes. The English rivet sizes, Spitfire etc were; 1/16", 3/32", 1/8", 5/32",3/16" and 1/4" shank diameter, there were many different shaped heads used, the head shape and size being a ratio of the shank Dia. shank dia being dependent on the thickness of the materials ie, 20 SWG sheet would normally be 1/8" rivets thicker materials needing larger dias.