right-hand nut thread 0.531" nut thread thread length 2.078" overall length 26 nut thread thread quantity per inch navy special project cadmium surface treated stepped uns nut thread thread series
2a nut thread thread class right-hand nut thread 0.370" stud thread thread length 1.182" overall length 16 stud thread thread quantity per inch navy special project nut end threads made per mil-s-8879 cadmium surface treated stepped unc stud thread thread series