"ALUMINUM ALLOY,QQ-A-250/17,ALLOY 7079,TEMPER T651,12.860 IN. LG,6.920 IN. W,5.480 IN. H,46 HOLES FOR 0.1875 IN. DIA HI-LOK,IRREGULAR SPACED,2 HOLES IN LINE 0.9405 IN. MIN,0.9435 IN. MAX DIA,W/BUSHINGS PART NUMBER LS3859FR12-16,2 HOLES 0.4375 IN. MIN 0.4380 IN. MAX DIA"