"ALUMINUM ALLOY QQ-A-367 COMP 7075COND T73,ANODIZE MIL-A-8625 TY 1,3.985 IN. MIN TO 4.000 IN. MAX LG,3.728 IN. MIN TO 3.740 IN. MAX OD,BORE 1ST END 3.375 IN. DIA 1.140 IN. DP,BORE 2ND END 3.369 IN. MIN TO 3.371 IN. MAX DIA 1.140 IN. DP,MACHINED SURFACES 32.0 63.0 AND 125.0 MICROINCH FINISH,EXTERNAL GROOVE 0.424 IN. W 0.185 IN. DP"