Material aluminum alloy, qq-a-250/11; surface treatment chemical film, mil-c-5541, cl 2, zinc chromate primer, mil-p-8585, enamel, flat gray, tt-e-527; o/a lg 5.730 to 5.750 in.; o/a w 1.470 to 1.490 in.; 1 hole 0.386 in. Thru; 1 hole 0.492 to 0.502 in. Through 0.562 cbore at 0.035 to 0.040 d; 2 holes 0.218 to 0.222 in. Thru; 2 holes 0.560 to 0.570 thru; 2 holes 0.257 to 0.259 in. Csunk at 0.328 dia; 2 holes 0.154 to 0.165 through csunk at 0.285 in. Dia
