"QQ-A-200/3,T851 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T8511 FED SPEC SINGLE MATERIAL RESPONSE OUTER LAYER"
SFTT
SURFACE TREATMENT
ANODIZE OR CHROMATE OUTER LAYER
STDC
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
"MIL-A-8625,TYPE 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-A-8625,TYPE 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OUTER LAYER"