MRC:
Markings included on an item for the purpose of offering instructions or warnings or to indicate the purpose,function,or application of the item.excludes manufacturers part numbers,symbols,or the like.MARK
Special Markings:
Marked r4244, r4242, r4256, r4241, r4270, c4215, r4224, r4225, r4223, c4219, r4232, r4245, c4220, r4253, r4255, r4252, r4268, r4271, r4269, r4275, r4273, r4263, tb4202
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.STDC
Surface Treatment Specification:
Mil-f-14072, -221 military specification single treatment response terminals