Steel astm a108 or a575 or a576 grade 1010 through 1025 or steel mil-s-46172 alloy 1010 through 1025 or steel qq-s-681 class 65-35, o/a lg 1.470 in., 0.940 in. Dia, 0.500 in. Thk, mtg hole 0.375 in., handle lockpin hole 0.125 in. Dia, cam lg 0.531 in., cam thk 0.250 in.