3a nut thread thread class right-hand nut thread 0.343" stud thread thread length 1.527" overall length 16 stud thread thread quantity per inch locked in uns stud thread thread series
2a stud thread thread class right-hand nut thread 0.970" nut thread thread length 5.180" overall length 16 nut thread thread quantity per inch cadmium or zinc surface treated locked in un stud thread thread series
left-hand nut thread 0.970" nut thread thread length 5.180" overall length 16 nut thread thread quantity per inch cadmium or zinc surface treated locked in uns stud thread thread series