Used on mhu-7/m and mhu-123/m. 3b thread class right-hand 12 thread quantity per inch nut, plain, hexagon; steel; cadmium plated; 1.500-12, unf-3b rh thd, 0.484 in. min, 0.516 in. max nut h, 2.188 in. min, 2.250 in max w across flats, chamfered type bearing surface, 108 min, 112 max deg countersink angle cadmium surface treated
