2b single threaded hole thread class 1.730" overall length 2.450" overall width 32 single threaded hole thread quantity per inch unc single threaded hole thread series
2a single threaded bushing thread class 0.884" overall length 32 single threaded bushing thread quantity per inch disc unc single threaded bushing thread series
A2a single threaded bushing thread class 0.394" single threaded bushing thread length 2.609" overall length cylindrical w/flange unf single threaded bushing thread series