MRC:
Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.SUPP
Supplementary Features:
Hole through center 0.161 in. Dia., one end has a hole in ea of four corners 0.116 in. Diameter with 0.281 in. Diameter counterbore, first end 0.740 in. L by 0.716 in. W, second end has a hole in ea of 4 corners 0.070 in. Diameter with 90 degrees countersink, two holes 0.0619 in. Dia; nickel strike per f-19, method 1; silver plate per qq-s-365, type 11, grade b, thickness 0.0002 min.; gold plate per mil-g-45204, type 11, grade c, class 1
