3b thread class right-hand 18 thread quantity per inch groove on inside of counterbore, 0.063 in. min, 0.068 in. max w, 0.045 in. min, 0.061 in. max depth phosphate zinc surface treated
2b thread class right-hand 1.190" thread length 16 thread quantity per inch threaded pellet locking hole 10-32unf-2b, 0.690 in. from nut end; thru hole 0.125 in., 1.690 in. from end
