Material aluminum, 2024, temper t4, qq-a-225/6; finish chem film, 580-0036-000; 1 hole drilled and tapped for, 4-40 unc-2b helical coil insert; 2 holes 4-40 unc-2b x 0.250 in. Min d; o/a dim lg 0.593 in., w 0.406 in., 0.340 ht; 1 slot 0.125 in. W and 0.125 in. D