3a thread class right-hand 0.438" thread length hexagon head style 32 thread quantity per inch navy special project passivate surface treated unf thread series
2a thread class right-hand 0.525" thread length dished hexagon head style 20 thread quantity per inch furnished with a spring lockwasher unc thread series
right-hand 1.500" thread length 11 thread quantity per inch cold forged; protected by perma plate with friction control; double heat treated; 25 per pkg unc thread series
right-hand 1.500" thread length hexagon head style 11 thread quantity per inch cold forged; protected by perma plate finish; double heat treated; 25 per pkg unc thread series