MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel, forging, 4140 or 8640, grade 1, mil-s-46172; surface roughness is 125.000 microinches; surface treatment is manganese phosphate base, mil-p-16232, tpye m, class 3; or zinc phosphate base, mil-p-16232, type z, class 3; and paint, tt-e-489, color white, except waive preproduction inspection; heat treatmentis quench and temper to hardness rc26-32; 34.020 in. Lg.; 2.974 in. Dia.
