2b thread class right-hand 28 thread quantity per inch 8 equally spaced slots 0.055 in. min, 0.065 in. max width by 0.170 in. deep copper surface treated
Used on w/s:aircraft,(ac-130h, mc-130h, ec-130e, hc-130); aircraft, stratofortress b-52. 3b thread class right-hand 24 thread quantity per inch cadmium surface treated