"ALUMINUM ALLOY QQ-A-268 TEMPER T4,SURFACE TREATMENT CHEMICAL FILM,FW4182,DIM.,2.070 IN. MIN,2.080 IN. MAX O/A LG,0.802 IN. MIN,0.804 IN. MAXO/A FLANGE OD LEFT AND RIGHT,0.303 IN.NOM FLANGE W LEFT AND RIGHT,0.654 IN. MIN,0.656 IN. MAX FLANGE GROOVE DIA LEFT AND RIGHT,0.500 IN. NOM ID,MAX SURFACE FINISH,GROOVE DIA 63 MICROINCHES AA,ALL OTHER SURFACES 125 MICROINCHES AA"