2a thread class right-hand 0.203" thread length pan no. 2 head style 32 thread quantity per inch undercut for thread relief cadmium surface treated unf thread series
3a thread class right-hand 0.375" thread length flat chamfer head style 18 thread quantity per inch navy special project chromium surface treated unc thread series
3a thread class right-hand 0.500" thread length fillister head style 20 thread quantity per inch 0.094 in. w by 0.250 in. dia relief between head cadmium surface treated unc thread series
3a thread class right-hand 0.484" thread length flat chamfer head style 24 thread quantity per inch surface x casehardended to RC55 min RC60 max phosphate surface treated unf thread series
2a thread class right-hand 0.532" thread length hexagon head style 18 thread quantity per inch 15 deg taper between shoulder passivate surface treated unc thread series
2a thread class right-hand 0.250" thread length flat chamfer head style 40 thread quantity per inch thd relief groove 0.062 in. wide passivate surface treated unf thread series
