3a thread class right-hand 0.376" thread length fillister head style 0.070" hole diameter 32 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.625" thread length fillister head style 0.034" hole diameter 32 thread quantity per inch aluminum screw surface treated unjf thread series
3a thread class right-hand 0.152" thread length flat countersunk undercut head style 56 thread quantity per inch passivate screw surface treated unjc thread series
2a thread class right-hand 0.438" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series