Matl aluminum alloy, 2024-t3; finish anodize, mil-a-8625, type 1; 0.862 in. O/a lg; 0.620 in. O/a w; 0.063 in. O/a thk; two 0.094 in. Diameter mtg holes through with 82 degrees countersink to 0.180 in. Diameter irregularly spaced; one 0.170 in. Diameter hole through centrally located