Used on noliver perry class ffg, tactical air opns module (an/tyq-(23), spruance class dd (963), forrestal class cv, wasp class lhd, ticonderoga class cg (47)arleigh burke class ddg, nimitz class cvn, radio an/grc-171b(v)4. 2a thread class right-hand 0.750" overall length weapon system essential unf thread series
2a single mounting facility thread class 0.312" single mounting facility thread length 1.301" overall length circular wafer, bushing mount unef single mounting facility thread series