3a nut thread thread class right-hand nut thread 1.688" stud thread thread length 9.750" overall length 12 nut thread thread quantity per inch concentric extension on stud end 0.062 in. lg by 1.062 in. dia incl inlg of thd unc stud thread thread series
2a nut thread thread class right-hand nut thread 1.250" nut thread thread length 6.625" overall length 11 stud thread thread quantity per inch stud end has saw cut 0.120 in. W0.028 in. deep parallel to axis unc stud thread thread series