3a nut thread thread class 0.510" stud thread thread length 2.500" overall length 14 stud thread thread quantity per inch unthreaded shank on nut end 1.296 in. lg from serrated portion at 3/8 in. dia locked in unc nut thread thread series
3a nut thread thread class right-hand nut thread 0.165" stud thread thread length 1.035" overall length 20 stud thread thread quantity per inch locked in uns stud thread thread series
3a nut thread thread class right-hand nut thread 0.310" stud thread thread length 0.940" overall length 28 stud thread thread quantity per inch navy special project passivate surface treated locked in uns stud thread thread series