3b thread class right-hand 24 thread quantity per inch boss extends opposite nut projection side 0.085 in. long 0.372 in. min 0.376 in. max od, 0.329 in. min 0.334 in. max id cadmium surface treated
3b thread class right-hand 28 thread quantity per inch boss extends opposite nut projection side 0.085 in. long, 0.304 in. min, 0.308 in. max od, 0.265 in. min, 0.270 in. max id cadmium surface treated