MRC:
The document designator of the specification or standard which established the item of supply.ZZZK
Specification Data:
81349-mil-i-45208 government specification and 96906-mil-std-105 government standard and 81349-mil-c-23200 government specification and 81349-mil-p-55110 government specification and 96906-mil-std-129 government standard and 96906-mil-std-275 government standard and 96906-mil-std-454 government standard and 81349-mil-p-23199 government specification
MRC:
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.ZZZY
Reference Number Differentiating Characteristics:
Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications
