"ALUMINUM ALLOY COMP 7075 COND T6,ANODIZE COATING,30.270 IN. O/A LG,5.375 IN. OD,BORE 4.510 IN. MIN TO 4.530 IN. MAX DIA 27.750 IN. DP,1 END5.375-12 UNS-3A THD 1.188 IN. LG,2ND END 1.750-12 UNS-2A THD 1.000 IN. LG,12 HOLES THRU WALL EQUALLY SPACED 0.750 IN. DIA,AS NOTED MACHINED SURFACES 32.0 63.0 125.0 AND 250.0 MICROINCH FINISH"