MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel, comp 1060 or 1070, astm-a108or steel, 4140 or 4150, qq-s-624, austentic grain size 6 or finer; alternate material is steel, comp ic8640, mil-s-22141; heat treatment: heat to 1520-1560 deg. F., oil quench, temper at 750 deg. F. For 1 hr.; manganese phosphate per mil-p-16232, type m, class 1; 0.658 in. Lg.; 0.467 in. W.; 1 hole is 0.155 in. Dia., csk to 0.026 in. Deep by 60.0 deg.
