2b thread class right-hand any acceptable overall length any acceptable overall width 24 thread quantity per inch cadmium surface treated straight type w/cable clamp unef thread series
2b thread class right-hand 0.780" overall length 36 thread quantity per inch passivate surface treated double clamping action open frame type uns thread series
2a single mounting facility thread class 2.812" overall length 0.405" overall width 32 single mounting facility thread quantity per inch hook, stud mounting unf single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 3.068" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 2.956" overall length 2.500" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series