Aluminum, composition 6061, temper t6, per qq-a-250/11, black anodizeper mil-a-8625 type 2, class 2, 5.730 in. Min, 5.750 in. Max lg, 0.750 in.W, 0.063 thk sheet, two 0.496 in. Diameter holes counterbore 0.562 in. Diaby 0.038 in. Min, 0.043 in. Max deep, two 0.257 in. Diameter holes countersunk100 degrees 0.328 in. Dia, three 0.125 in. Diameter mtg holes
