Material steel, mil-s-764, comp 303, cond a; surface treat. Passivate, qq-p-35; 1 hole 4-40 unc-2b, 0.200 in. Dp; hexagon, 0.250 in. Between flats; o/a lg 0.305 in.; o/a diameter both ends 0.177 in. To 0.180 in.; chamfered opposite end of hole 0.03 in. By 45.0 deg
