2a thread class right-hand 0.500" thread length pan head style 32 thread quantity per inch passivate screw surface treated screw, machine unc thread series
Used on F-15S. 3a thread class right-hand 2.380" thread length dished hexagon head style 3.000" grip length 16 thread quantity per inch hole drilled down center of head unf thread series
2a thread class right-hand 2.796" thread length flat countersunk head style 13 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.378" thread length flat countersunk head style 0.615" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.378" thread length flat countersunk head style 0.552" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.413" thread length dished hexagon head style 0.615" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.370" thread length flat countersunk head style 0.302" grip length 28 thread quantity per inch cadmium surface treated unjf thread series