2a thread class right-hand 0.752" overall length 0.233" overall width 36 thread quantity per inch two unthreaded holes equally spaced on a 0.481 in. mtg center uns thread series
2b second mounting facility thread class right-hand second mounting facility 3.250" overall length 3.090" overall width 32 second mounting facility thread quantity per inch unc second mounting facility thread series
2b thread class right-hand 4.125" overall length 1.562" overall width 28 thread quantity per inch cadmium surface treated straight type w/cable clamp un thread series