2a thread class right-hand flat countersunk head style 28 thread quantity per inch passivate screw surface treated 0.190 inch dia hole along the longitudinal centerline unf thread series
3a thread class right-hand 0.162" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.151" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series