Used on sirius class t-afs 8; wasp class lhd; tarawa class aoe; virginia class cgn (41); spruance class dd (963); emory s.land class cv; oliver perry class ffg; austin ship class lpd-4 amphibious transport docks. weapon system essential
2a single mounting facility thread class 0.250" single mounting facility thread length 1.512" overall length circular wafer, bushing mount unef single mounting facility thread series