MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel, cmpsn 1018-1022, 1117, or 1118, astm-a108; 0.870 in. Dia.; 0.437 in.High; central hole is 0.562 in. Dia.; 25 equally spaced notches; heat treatment=carburize at 1600-1650 deg. F. To case depth of 0.015-0.020 in., oil quench, temper at 350 deg. F. For 30 min. To rockwell hardness 15n 88-92; manganese phosphate, type m, or zinc phosphate, type z, per mil-p-16232, class 1
