2a thread class right-hand 3.120" thread length hexagon head style 0.094" hole diameter 16 thread quantity per inch passivate screw surface treated unf thread series
2a thread class right-hand 0.438" thread length oval countersunk undercut head style 32 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.438" thread length button head style 32 thread quantity per inch navy special project cadmium or zinc screw surface treated unc thread series
3a thread class right-hand 0.858" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.531" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 1.233" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series