2b thread class right-hand 28 thread quantity per inch plate has two unthreaded holes; center to center distance 0.440 in.; 0.127 in. dia.; HU25a cadmium surface treated
Used on an/ar186 radio,kc-435 aircraft trainer. 3b thread class right-hand 40 thread quantity per inch plate gussets along lg, both sides cadmium surface treated
2b thread class right-hand 32 thread quantity per inch two holes in plate 0.150 in. from base of nut; holes are 0.275 in. apart 0.095 in. diameter disulfide molybdenum surface treated