2b all threaded hole thread class 3.875" overall length 2.750" overall width 32 all threaded hole thread quantity per inch rectangular unc all threaded hole thread series
0.436" single threaded bushing thread length 5.200" overall length 1.030" overall width 28 single threaded bushing thread quantity per inch unef single threaded bushing thread series
0.390" single threaded bushing thread length 3.120" overall length 27 single threaded bushing thread quantity per inch cylindrical w/flange npt single threaded bushing thread series
3a single threaded bushing thread class 0.438" single threaded bushing thread length 20 single threaded bushing thread quantity per inch unf single threaded bushing thread series