2a thread class right-hand 0.125" thread length flat countersunk head style 56 thread quantity per inch navy special project passivate surface treated unc thread series
2a nut thread a thread class right-hand nut thread a 0.750" nut thread a thread length 17.141" overall length 18 nut thread a thread quantity per inch w/cone point 40 to 50 degrees 0.125 in. lg zinc surface treated unc nut thread a thread series
2a thread class right-hand 0.250" thread length headless (setscrew) head style 32 thread quantity per inch navy special project passivate surface treated unc thread series
2a thread class right-hand 0.188" thread length headless (setscrew) head style 40 thread quantity per inch navy special project passivate surface treated unc 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
2a thread class right-hand 1.620" thread length flat countersunk head style 9 thread quantity per inch cadmium or zinc surface treated unc thread series
3a thread class right-hand 0.338" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.938" thread length crowned hexagon head style 0.035" hole diameter 0.031" grip length 32 thread quantity per inch slot in shank end cadmium surface treated unf thread series
3a thread class right-hand 0.544" thread length hexagon head style 0.812" grip length 28 thread quantity per inch tensile strength at room temperature passivate surface treated unf thread series