"ALUMINUM ALLOY QQ-A-225/4 COMP 2014 COND T6,ANODIZE MIL-A-6825 TY 1,3.580 IN. O/A LG,0.547 IN. MIN TO 0.548 IN. OD,BORE ONE END 0.213 IN. MIN TO 0.218 IN. MAX DIA 2.500 IN. DP,0.250-28 UNF-3B THDS 0.340 IN. LG BOREEND,1 HOLE THRU BOTH WALLS 0.093 IN. DIA,2 EXTERNAL GROOVES 0.094 IN. W 0.055 IN. DP,MACHINED SURFACES 32.0 AND 125.0 MICROINCH FINISH"