2a single mounting facility thread class 0.469" single mounting facility thread length 2.470" overall length tap, circular, bushing mount unef single mounting facility thread series
Used on virginia class cgn (41); guardrail (systems 1 - 4); spruance class dd ((63); forrestal class cv; nimitz class cvn; whidbey island class lsd; safeguard class ars; supply class aoe; oliver perry class ffg; tarawa class lha. weapon system essential