Used on tarawa class lha; nimitz class cvn; emory s. land class as; sturgeon class ssn (637); virginia class cgn (41); oliver perry class ffg; ticonderoga class cg (47); spruance class dd (963); forrestal class cv. weapon system essential
2b single mounting facility thread class 2.500" overall length 2.281" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2a single mounting facility thread class 1.580" overall length 32 single mounting facility thread quantity per inch unc single mounting facility thread series