2a single mounting facility thread class 4.781" overall length 2.406" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
2a all threaded stud thread class 1.000" all threaded stud thread length 5.000" overall length 0.500" single connection outside diameter 4.625" overall width 20 all threaded stud thread quantity per inch cylindrical unc all threaded stud thread series
2a single mounting facility thread class 0.235" single mounting facility thread length 0.986" overall length tap, circular, bushing mount unf single mounting facility thread series