3b thread class right-hand 0.313" err default 0.562" overall length three lockwiren holes, 1/16 in. id located on top of nut equally spaced on 1-3/4 in. bolt circle dia hexagon, internal thread, shouldered
2b thread class right-hand 0.455" thread length 0.158" hole diameter 0.615" overall length 6 diagonal holes 0.040 in. min, 0.045 in. max dia anodize, mil-a-8625, type i, class 1 surface treated round, internal thread, shouldered
3a thread class right-hand 0.359" thread length 0.703" overall length 2 holes drilled parallel w/flats on opposite sides of the head, 0.070 in. dia hexagon, external thread, inverted flare