Matl cres, qq-s-t64, class 303, cond a; finish passivate; 1.749 in. Porm 0.003 in. O/a lg; 0.250 in. O/a dia; external thd one end 0.187 in. Lg, 4-40 unc-2a; internal thd same end 0.310 in. Dp, 4-40 unc-2b; two 0.062 in. Diameter holes through 90 degrees porm 10 degrees apart 0.307 in. From same end