"ALUMINUM ALLOY,QQ-A-367,ALLOY 7075,TEMPER T6,5.830 IN. LG,16.000 IN. DIA,W/32 INSERTS PART NUMBER NAS1394C3L,16 EQUALLY SPACED ON A 15.000 IN. DIA BOLT CIRCLE,8 EQUALLY SPACED ON A 10.250 IN. DIA BOLT CIRCLE AND 8 EQUALLY SPACED ON A 6.500 IN. DIA BOLT CIRCLE,2 HOLES IN LINE 1.1875 IN. MIN,1.1885 IN. MAX DIA W/BUSHINGS PART NUMBER LS3859F16-18,1 HOLE 0.374 IN. MIN,0.381 IN. MAX DIA COUNTER BORED 1.499 IN. MIN,1.512 IN. MAX DIA 0.980 IN. DEEP"