3a thread class right-hand 0.562" thread length flat countersunk head style 40 thread quantity per inch navy special project cadmium screw surface treated unjc thread series
2a thread class right-hand 1.188" thread length hexagon head style 14 thread quantity per inch thd end machined to an angle of 35 to 40 deg passivate surface treated uns thread series
3a thread class right-hand 0.506" thread length flat countersunk head style 1.928" grip length 24 thread quantity per inch navy special project cadmium surface treated unjf thread series
2a thread class right-hand 0.192" thread length hexagon head style 0.062" hole diameter 24 thread quantity per inch cadmium 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
3a thread class right-hand 0.300" thread length flat countersunk head style 18 thread quantity per inch undercut 0.220 to 0.230 in. dia by 0.050 to 0.070 in. w between thd unc thread series