0.050 in. Thk al alloy per qq-a-250/12 temper -0; heat treat -t6; 6.80 in. Lg; 2.50 in. W; 2.25 in. H; two 0.220 in. Min, 0.226 in. Max diameter mounting holes in ea 0.81 in. Lg flat extention; six evenly spaced 0.260 in. Min, 0.267 in. Max diameter holes in top, ea with nut and rivet; two apertures in top, one with 0.749 in. Min, 0.758 in. Max dia, other with 0.874 in. Min, 0.885 in. Max dia; one 0.999 in. Min, 1.010 in. Max diameter hole centered in ea end; four 90.0 degrees bends
