Used on helicopter, uscg search and rescue, hh-60h, helicopter, search and rescue, hh-60h; helicopter, carrier based asw, sh-60f; spruance class dd (963), ticonderoga class cg (47), sturgeon class ssn (637), forrestal class cv, los angeles class ssn (688), virginia class cgn (41). weapon system essential
2a single mounting facility thread class 1.644" overall length 1.109" overall width 48 single mounting facility thread quantity per inch unc single mounting facility thread series
