2a thread class right-hand 0.303" thread length flat countersunk head style 24 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.355" thread length fillister head style 0.046" hole diameter 24 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.232" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unjc thread series