1steel, mil-s-7952, comp 1020 through 1025; cadmium plate, qq-p-416, type 2, class 2; 1.090 in. Lg; 0.330 min and 0.350 in. Max u; 2.56, nc-2b thread two places; 0.220 in. Min and 0.240 in. Max slot lg, 0.097 in. Min and 0.107 in. Max slot w two places