2b single mounting facility thread class 1.750" overall length 1.400" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2a single threaded bushing thread class 0.440" single threaded bushing thread length 27 single threaded bushing thread quantity per inch npt single threaded bushing thread series
3a all threaded stud thread class 0.533" all threaded stud thread length 6.500" overall length 14 all threaded stud thread quantity per inch cylindrical npt all threaded stud thread series