MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel alloy astm A331-74, 4140, cold finished 0.15-0.35 per cent lead permitted surface roughness is 125.000 microinches; heat treatment: MIL-H-6875, quench and temper to 23-32 rockwell c induction harden area indicated only to 45-50 rockwell c from 0.06 to 0.25 in Deep manganese phosphate MIL-P-16232, type m class 1; 3.570 in Lg 2.770 in Dia 3 equally spaced holes 0.285 in Dia
