3a thread class right-hand flat countersunk head style 28 thread quantity per inch cadmium screw surface treated altered nas 1102-4. edges of head may be rounded absolute min head dia 0.442. unjf thread series
2a thread class right-hand 1.750" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.100" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.173" thread length pan head style 56 thread quantity per inch navy special project passivate screw surface treated unjc thread series
3a thread class right-hand 0.250" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.406" thread length flat countersunk head style 32 thread quantity per inch navy special project cadmium screw surface treated unjf thread series
3a thread class right-hand 0.198" thread length flat countersunk head style 28 thread quantity per inch navy special project cadmium screw surface treated unjf thread series