NO SURFACE TREATMENT ON APERTURE OF COUNTERBORE; TWO THROUGH HOLES CENTERED 2.438 IN. TO LEFT OF VERT AND 1.438 IN. ABOVE AND BELOW CL 2 IN. DIA; SLOT CENTERED 30 DEG RIGHT OF CL
SFTT
SURFACE TREATMENT
CHROMATE OVERALL EXCLUDING BORE OR APERTURE
STDC
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
"MIL-C-5541,CL 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCLUDING BORE OR APERTURE"