3a thread class right-hand 0.658" thread length flat countersunk head style 1.490" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.413" thread length dished hexagon head style 3.740" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.725" thread length dished hexagon head style 1.240" grip length 20 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.666" thread length dished hexagon head style 1.990" grip length 16 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.344" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series