2a thread class right-hand 0.898" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.797" thread length flat countersunk head style 20 thread quantity per inch navy special project cadmium screw surface treated unf thread series
2a thread class right-hand 0.183" thread length flat countersunk undercut head style 16 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.917" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.251" thread length pan head style 32 thread quantity per inch cadmium or chromate screw surface treated unjc thread series
3a thread class right-hand 0.283" thread length pan head style 32 thread quantity per inch cadmium screw surface treated furnished with boot type nylon washer; color of washer black per fed std 595 no. 27038 unf thread series
2a thread class right-hand 0.408" thread length pan head style 32 thread quantity per inch passivate screw surface treated supply washer; finish head unf thread series