| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,ALLOY 4140 OR 8640; HEAT TREATMENT,QUENCH AND TEMPER ROCKWELL C 32-36; FINAL PROTECTIVE FINISH,PHOSPHATE COAT,TYPE M OR Z CLASS 1,SPEC DOD-P-16232; 0.880 IN. EXTERNAL DIA. OVERALL; 0.312 IN. INTERNAL DIA; 0.500IN. H. OVERALL |