Used on sturgeon class ssn (637). 2a nut thread thread class right-hand nut thread 0.930" stud thread thread length 2.490" overall length 11 nut thread thread quantity per inch 125000 psi to 145000 psi tensile unc nut thread thread series
3a nut thread thread class right-hand nut thread 0.690" stud thread thread length 1.620" overall length 18 stud thread thread quantity per inch threads on stud end are of special design, both end have 0.680 in. dia hole bored through threads unc stud thread thread series
Used on sturgeon class ssn (637). 2a nut thread thread class right-hand nut thread 0.562" stud thread thread length 2.375" overall length 16 nut thread thread quantity per inch unc nut thread thread series