2b thread class right-hand 4.959" overall length 2.469" overall width 16 thread quantity per inch cadmium surface treated straight type w/cable clamp uns thread series
2a single mounting facility thread class 0.438" single mounting facility thread length 2.564" overall length tap, circular, bushing mount unef single mounting facility thread series
2b single mounting facility thread class 4.625" overall length 1.750" overall width 40 single mounting facility thread quantity per inch unc single mounting facility thread series