2a thread class right-hand 0.169" thread length fillister head style 0.046" hole diameter 40 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.314" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.273" thread length fillister head style 0.061" hole diameter 28 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 1.750" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.207" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.811" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unjc thread series