Used on supply classaoe; austin ship class lpd-4 amphibious transport docks; usns stalwart class tagos; wasp class lhd; nimitz class cvn; sturgeon class ssn (637); forrestal class cv; tarawa class lha; shipboard material handling equipment (mhe); emory s. land class as. 2a thread class 1.940" overall length 0.687" overall width 32 thread quantity per inch weapon system essential unc thread series