3a thread class right-hand 0.763" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.318" thread length hexagon head style 0.240" grip length 28 thread quantity per inch grip chamfer at threads 35.0 degrees cadmium surface treated unjf thread series
2a thread class right-hand 1.750" thread length hexagon head style 8 thread quantity per inch navy special project electrofilm 99-a or lubri-bond .00025-.0005 thk all over after final machining unc thread series
3a thread class right-hand 0.750" thread length 24 thread quantity per inch navy special project special head:chamfered on top 17.0 deg unf thread series
3a thread class right-hand 0.553" thread length flat countersunk head style 0.240" grip length 24 thread quantity per inch navy special project cadmium surface treated unjf thread series