"ALUMINUM ALLOY,ALLOY 2024,QQ-A-250/4,T62; 28 0.097 IN. MIN,0.102 IN. MAX DIA HOLES; 2 0.249 IN. MIN,0.255 IN. MAX DIA HOLES; ONE 1.200 IN. DIA HOLE; ONE 1.350 IN. DIA HOLE; ONE 1.500 IN. DIA HOLE; ONE 1.600 IN. DIA HOLE; OPPOSITE OF PART NUMBER A51B92104-22,CAGEC 26512; EPOXY POLYAMIDE PRIMER,MIL-P-23377"