Used on weapon systems-arleigh burke class ddg; spruance class dd (963); wasp class lhd; ticonderoga class cg (47); an/sqq-89 surface ship asw combat system. 2b thread class 40 thread quantity per inch weapon systems essential uns thread series
Used on weapon systems-ticonderoga class cg (47); an/sqq-89 surface ship asw combat system; wasp class lhd; arleigh burke class ddg; spruance class dd (963). 2a thread class 32 thread quantity per inch weapon system essential uns thread series
