3a thread class right-hand 0.126" thread length flat countersunk undercut head style 32 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.348" thread length fillister head style 0.046" hole diameter 40 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.146" thread length flat countersunk head style 48 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 1.750" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.438" thread length binding head style 36 thread quantity per inch navy special project nickel screw surface treated uns thread series