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:
MIL-S-13048, FS1018-CANCELLED military specification single material response and MIL-S-13048, FS1020-CANCELLED federal standard single material response and MIL-S-13048, FS1022-CANCELLED military specification single material response and MIL-S-13048, FS1025-CANCELLED military specification single material response and MIL-S-13048, FS1030-CANCELLED military specification single material response