2b thread class right-hand 1.504" overall length 3.359" overall width 28 thread quantity per inch item must comply with requirements of defense supply center columbus production standard no. LO3271 unf thread series
2a thread class right-hand 1.504" overall length 3.359" overall width 28 thread quantity per inch item must comply with requirements of desc production standard no. L03270; for navy nuclear propulsion plant products only unf thread series
Used on an/wlr-1h surface countermeasure receiver set; forrestal class cv; close in weapon system (ciws-phalanx); los angeles class ssn (637); guardrail (systems 1-4); nimitz class cvn. 2a thread class right-hand 0.575" overall length 0.222" overall width 36 thread quantity per inch uns thread series