MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Plastic, mil-p-17091, 3.240 in. Od, 3.150 in. Id, 0.500 in. Thk, special requirements for nuclear propulsion plant equipment contained in individual repair parts ordering data instrumentation control no. 01ac205a line no. 501
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:
As differentiated by the general characteristics item description