3a thread class right-hand 0.437" thread length hexagon head style 0.046" hole diameter 0.296" grip length 28 thread quantity per inch unf thread series
3a thread class right-hand 0.290" thread length hexagon countersunk head style 0.542" grip length 32 thread quantity per inch navy special project relief groove under head 0.040 in. max lg by 0.151 in. nom dia unc thread series
3a thread class right-hand 1.830" thread length flat chamfer head style 2.500" grip length 24 thread quantity per inch passivate surface treated unf thread series
2a thread class right-hand 0.156" thread length flat countersunk head style 56 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 0.917" thread length hexagon head style 1.173" grip length 18 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.750" thread length crowned hexagon head style 1.250" grip length 28 thread quantity per inch navy special project cadmium or chromate surface treated unjf thread series
3a thread class right-hand 0.366" thread length dished hexagon head style 13.740" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
