2a single mounting facility thread class 0.312" single mounting facility thread length 3.677" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 2.245" overall length tap, circular, bushing mount unef single mounting facility thread series
2a 2nd mounting facility thread class 6.469" overall length 2.812" overall width 24 1st mounting facility thread quantity per inch item must comply with requirements of desc production standard no. L03443; for navy nuclear propulsion plant products only tap, circuit selector unc 1st mounting facility thread series