MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General 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
