MRC:
The element,compound,or mixture of which the item is fabricated,excluding any surface treatment,and its location.ANNQ
Material And Location:
Manganese bronze, qq-m-80, class b-canceled body and steel, qq-s-763, class 303 pin
MRC:
The plating,dip,and/or coating that cannot be wiped off.plating and/or coating is any chemical and/or metallic additive,electrochemical,or mild mechanical process which protects the surface of the item and its location.ANNR
Surface Treatment And Location:
Passivated, mil-std-171, 5.4 pin