MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Qq-s-763, class 302 federal specification 1st material response or qq-s-763, class 304 federal specification 2nd material response or qq-s-763, class 316 federal specification 3rd material response or qq-s-763, class 321 federal specification 4th material response or astm a582, type 302 assn standard 5th material response or astm a582, type 303se assn standard 6th material response