Material steel, corrosion resisting, ams 5643, cond sol, heat treated; finish passivated, mil-f-14072; o/a diameter 1.875 in.; i/d 1.1562 to 1.1569 in.; 4 holes equally spaced on 1.457 in. Diameter hole diameter 0.138 to 0.146 in. Cbore 0.25 in. By 0.031 deep; surface finish 250 microinches and 63 microinches; o/a w 0.468 in.
