2b thread class right-hand 32 thread quantity per inch navy special project head flatted on two opposite sides. each flat spaced 0.265 in. min to 0.275 in. max from axial center line. all surfaces finished 125 micro" passivate surface treated
2b thread class left-hand 13 thread quantity per inch flange has two drilled holes 0.173 in. dia 1.250 in. nom c to c across flats, flange 0.750 in. wide anodize surface treated