2b single mounting facility thread class 2.312" overall length 0.656" overall width 24 single mounting facility thread quantity per inch tap, square frame unc single mounting facility thread series
2b single mounting facility thread class 3.000" overall length 2.828" overall width 24 single mounting facility thread quantity per inch round threaded hole shaft tap, circuit selector unc single mounting facility thread series
Used on fnimitz class cvn, forrestal class cv, kidd class ddg, emory s. land class as, wasp class lhd, los angeles class ssn (688), virginia class cgn (41), sturgeon class ssn (637), spruance class dd (963).. 1.940" overall length 0.687" overall width weapon system essential