Used on c-130j-30 aircraft flight controls. 3b thread class right-hand 18 thread quantity per inch nut, hexagon, castellated captive washer, nylon inser, 250 deg f 8opposite slots must coincide within 0.005 cadmium nut surface treated
3b thread class right-hand 28 thread quantity per inch taper-lok washernut nut assembly shear type heat treat nut 160 ksi min per mil-h-6875; heat treat washer 140 ksi min per mil-h-6875; tensil strength 5060 lbs cadmium surface treated