2b thread class right-hand 3.500" overall length 1.660" overall width 32 thread quantity per inch cadmium surface treated hood, top opening w/clamp unc thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 4.038" overall length tap, circular, bushing mount unef single mounting facility thread series
2b single mounting facility thread class 3.520" overall length 2.120" overall width 32 single mounting facility thread quantity per inch weapon system essential; blank legend plate tap, circuit selector unc single mounting facility thread series
2b single mounting facility thread class 3.520" overall length 2.120" overall width 32 single mounting facility thread quantity per inch legend plate reads dome; dark ship tap, circuit selector unc single mounting facility thread series
2a thread class right-hand 1.050" overall length 0.250" overall width 56 thread quantity per inch item must comply with requirements of desc production standard no. L03976; for navy nuclear propulsion plant products only unc thread series