"STEEL 4130,NORMALIZED,MIL-S-6758,1.125 IN. HEX,0.180 IN. THK HEAD,1.093 IN. DIA,0.030 IN. LG SHOULDER,0.340 IN. LG,0.748 IN. DIA SHANK CONCENTRIC TO HEAD,0.500 IN. ID CENTERBORE OFFSET 0.062 IN. FROM OD CENTER,125 MICROINCH MACHINE FINISH BEFORE PLATING"