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-a-250/5, temp 3 federal specification single material response or qq-a-250/5, temp 4 federal specification single material response or qq-a-250/4, temp 3 federal specification single material response or qq-a-250/6, temp 4 federal specification single material response or ww-t-700/3, temp 6, type 1 federal specification single material response