2a thread class right-hand 0.180" thread length flat chamfer head style 40 thread quantity per inch shoulder relieved groove 0.010 to 0.030 in. w by 0.005 in. deep passivate surface treated unc thread series
3a thread class right-hand 0.375" thread length binding head style 32 thread quantity per inch third shoulder 0.247 in. dia 1.720 in. lg cadmium surface treated unf thread series
2a thread class right-hand 0.191" thread length hexagon head style 40 thread quantity per inch navy special project nickel surface treated unf thread series
2a thread class right-hand 0.214" thread length flat chamfer head style 0.038" hole diameter 24 thread quantity per inch undercut 0.220 in. dia, 0.040 in. lg unc thread series
2a thread class right-hand 0.315" thread length flat chamfer head style 28 thread quantity per inch thd relieved groove 0.030 in. min 0.050 in. max w 0.196 in. min 0.206 in. max dia phosphate manganese or phosphate zinc surface treated unf thread series
