2b single mounting facility thread class 3.125" overall length 3.812" overall width 20 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
3.660" overall length 0.340" overall width item must comply with requirements of desc production standard no. L02857; for navy nuclear propulsion plant products only
0.750" overall length 0.450" overall width item must comply with requirements of desc production standard no. L02858; for navy nuclear propulsion plant products only