| GENERAL CHARACTERISTICS ITEM DESCRIPTION | MATERIAL:STEEL ASTM A322 OR A331:4147,4150,6150;1.123 IN.DIA AND 0.577 IN.W;CENTER 0.58 IN.DIA AND 0.02 IN. DEEP;DRILL POINT IN CENTER 0.085 IN. DEEP;HEAT TREATMENT FOR MATERIAL 4147 OR 4150:HEAT AT 1500 TO 1550 DEGREES F;HEAT TREATMENT FOR MATERIAL 6150: HEAT AT 1550 TO 1600 DEGREES F;OIL QUENCH;TEMPER ONE HOUR;SURFACE TREAT- MENT:MANGANESE PHOSPHATE,MIL-P-16232,TYPE M,CLASS 1 |