4130 steel mil-s-18729 cond a; 2.475-2.480 in. Long; 0.150-0.157 in. Thk; 2 holes 0.323-0.327 in. Diameter 1.500 in. C to c distance; 1 hole 0.257-0.261 in. Between holes above; 1 hole csk 100 degrees by 0.625 in. Dia; cad plate qq-p-416b; hardness rc 40-45; corner radius 1.125-1.130 in. Radius
