2a single mounting facility thread class 0.437" single mounting facility thread length 2.591" overall length tap, circular, bushing mount unef single mounting facility thread series
3.500" overall length 2.500" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
2b thread class right-hand 2.375" overall length 1.220" overall width 20 thread quantity per inch cadmium surface treated angle type unef thread series
2a single mounting facility thread class 0.365" single mounting facility thread length 2.500" overall length circular wafer, bushing mount unef single mounting facility thread series