Used on spec item. 3a nut thread thread class right-hand nut thread 0.284" stud thread thread length 0.974" overall length 20 stud thread thread quantity per inch locked in unc stud thread thread series
Used on spec item. 3a nut thread thread class right-hand nut thread 0.284" stud thread thread length 1.062" overall length 20 stud thread thread quantity per inch zinc or nickel surface treated locked in unc stud thread thread series
3a nut thread thread class right-hand nut thread 0.310" stud thread thread length 1.440" overall length 28 stud thread thread quantity per inch navy special project cadmium surface treated locked in uns stud thread thread series
2a stud thread thread class right-hand nut thread 1.520" overall length 16 stud thread thread quantity per inch locked in unf stud thread thread series