Used on ohio class ssn, virgina class cgn. 1.640" overall length 1.320" overall width 32 thread quantity per inch weapon system essential uns thread series
1.270" overall length 0.635" overall width 32 thread quantity per inch item must comply with requirements of desc production standard no. L02558; for navy nuclear propulsion plant products only uns thread series
1.340" overall length 0.910" overall width 32 thread quantity per inch item must comply with requirements of desc production standard no. L02494; for navy nuclear @propulsion plant products only uns thread series