"ALUMINUM ALLOY,QQ-A-596,ALLOY 356-T6; 6.380 IN. LG; 1.570 IN. H; 0.740 IN. MIN AND 0.760 IN. MAX THK; 1 HOLE 0.3105 IN. MIN AND 0.3145 IN. MAX DIA ENLARGED TO 0.562 IN. DIA AT ONE END; 1 HOLE 0.437 IN. DIA; 1 HOLE 0.249 IN. MIN AND 0.251 IN. MAX DIA; 3 HOLES 0.093 IN. DIA 3 PLACES"