Used on wasp class lhd, hh-60h search and rescue helicopter, ticonderoga class cg (47), los angeles class ssn (688), forrestal class cv, spruance class dd (963), sh-60f asw carrier based helicopter, oliver perry class ffg, hh-60j uscg search and rescue helicopter.. 2b thread class right-hand 1.500" overall length 28 thread quantity per inch weapon system essential chromate surface treated straight shape solid type uns thread series
2a single mounting facility thread class right-hand single mounting facility 1.156" overall length 0.910" overall width 48 single mounting facility thread quantity per inch unc single mounting facility thread series