2b single mounting facility thread class 7.120" overall length 2.826" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
Used on switchboard ships service generator onboard 210 wmec a and b class c.g. vessels. 2a single mounting facility thread class 5.340" overall length 2.810" overall width 32 single mounting facility thread quantity per inch tap, circuit selector unf single mounting facility thread series