Aluminum alloy 2024-t3 per qq-a-225/6; finish chem film class 1a per mil-c-5541, dyed yellow; 125.0 microinch machine finish ; 0.810 in. O/a lg, 0.430 in. O/a w, 0.188 in. O/a h; two 2-56unc-2b 0.250 in. Deep on each end; one 0.099 in. Diameter hole centrally located, 0.188 in. Lg thru