2a thread class right-hand 0.087" thread length flat countersunk head style 56 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 1.250" thread length hexagon head style 0.062" hole diameter 0.500" grip length 13 thread quantity per inch navy special project unc thread series
2a thread class right-hand 0.687" thread length 18 thread quantity per inch 3 slots on top of head, 0.125 in. w, 0.125 in. deep, 120 deg apart unf thread series
3a thread class right-hand 0.316" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.316" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.316" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.276" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.276" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.590" thread length double hexagon head style 1.812" grip length 18 thread quantity per inch cadmium surface treated unjf thread series