2b single mounting facility thread class 4.062" overall length 2.375" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2a single mounting facility thread class 0.312" single mounting facility thread length 2.233" overall length tap, circular, bushing mount unef single mounting facility thread series
2.140" overall length 0.240" overall width left side d-shaped socket guide rotated 90 deg, right side d-shaped pin guide rotated 90 deg clockwise from normal
2b thread class right-hand any acceptable overall length 1.469" overall width 24 thread quantity per inch cadmium surface treated straight type w/cable clamp uns thread series