3a thread class right-hand 0.251" thread length flat countersunk head style 1.928" grip length 32 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.375" thread length flat countersunk head style 0.750" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.087" thread length flat countersunk head style 64 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.150" thread length flat countersunk head style 64 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.337" thread length flat countersunk head style 64 thread quantity per inch passivate screw surface treated unc thread series