0.625 in. Lg, 0.188 in w, with .02 x 45 degrees relief radius four places; one hole 6-32unc-2b thru; one hole 4-40unc-2b .31 deep; matl cres square wire, type 416, cond a, per specification qq-s-764, passivate type 2 per qq-p-35; item used on coupler, mode-select, p/n 75700000-1