| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,ALLOY 4140,4145,8645,OR 8740,ASTM A322 OR ASTM A331; 0.380 IN. LG.; 0.370 IN. DIA.; HEAT AT 1540-1600 DEG. F.,QUENCH IN CIRCULATING OIL,TEMPER 30 MIN. AT HEAT TO HARDNESS ROCKWELLC42-45; MANGANESE PHOSPHATE,TYPE M,OR ZINC PHOSPHATE,TYPE Z,PER MIL-P-16232,CLASS 1 |