3a nut thread thread class right-hand nut thread 0.500" nut thread thread length 1.372" overall length 24 stud thread thread quantity per inch navy special project passivate surface treated locked in uns stud thread thread series
3a nut thread thread class right-hand nut thread 0.325" nut thread thread length 18 stud thread thread quantity per inch navy special project passivate surface treated locked in unc stud thread thread series