| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL ALLOY,QQ-S-624,TYPE 4150H,FORGED; SURFACE ROUGHNESS IS 125.000 MICROINCHES; SURFACE TREATMENT IS MANGANESE PHOSPHATE,MIL-P-16232,TYPE M,CLASS1 OR ZINC PHOSPHATE,MIL-P-16232,TYPE Z,CLASS 1; HEAT TREATMENT: MIL-H-6875 NORMALIZE,QUENCH AND TEMPER TO 30-36 ROCKWELL C; 7.755 IN. DIA.; 2.635 IN. HIGH |