Material: steel, carbon 1015-1025 per astm 108; heat treatment: carburize and harden per mil-h-6875 to case depth 0.035-0.045 and surface hardness rockwell c 58-62; protective finish: blackoxide per mil-c-13924 class 1; length of 4.50in; diameter of 1.740in; diameter of 0.995in; 1 end chamfered 0.06x45 degrees