2a thread class right-hand 1.190" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.143" thread length flat countersunk undercut head style 48 thread quantity per inch oxide screw surface treated unf thread series
3a thread class right-hand 0.538" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 1.750" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.401" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated dull black color unichrome dip, bulletin 65-b-cd unjc thread series
3a thread class right-hand 0.337" thread length pan head style 32 thread quantity per inch cadmium screw surface treated furnished with boot type washer black painted head unf thread series
3a thread class right-hand 0.500" thread length oval countersunk head style 32 thread quantity per inch passivate screw surface treated unf thread series