2a single mounting facility thread class 0.437" single mounting facility thread length 2.245" overall length item must comply with requirements of desc production standard N0. L03492; for navy nuclear propulsion plant products only tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.469" single mounting facility thread length 3.250" overall length 32 single mounting facility thread quantity per inch external jumpers tap, circular, bushing mount uns single mounting facility thread series