Al, 6061 tem t6, per qq-a-250/11, or al, 2024 tem t4, per qq-a-225/6; chem film type ii, grade c, class 3 per mil-c-5541 (580-0036-000); 1.245 in. Min, 1.255 in. Max lg; 0.952 in. W; 0.1855 in. Min, 0.1895 in. Max thk; two holes, one with diameter 0.1885 in. Min, 0.1892 in. Max diameter 0.408 in. Min, 0.412 in. Max from left end along lg, other hole with 0.1251 in. Min, 0.1259 in. Max dia, 0.639 in. Min, 0.641 in. Max between, both 0.425 in. Min, 0.433 in. Max from bottom edge; four no. 4-40 unc-2b x 0.28 min full thd holes, two each in opposite ends along w 0.731 in. Min, 0.735 in. Max apart; one 0.086-56 unc-2b x 0.40 min full thd hole, csk 82 degrees porm 2 degrees to 0.145 in. Diameter in top edge
