2b thread class left-hand any acceptable overall length 16 thread quantity per inch passivate surface treated straight type w/strain relief un thread series
2b thread class left-hand any acceptable overall length 18 thread quantity per inch passivate surface treated straight type w/strain relief unef thread series
2b thread class left-hand any acceptable overall length 20 thread quantity per inch passivate surface treated straight type w/strain relief unef thread series
2a single mounting facility thread class 0.312" single mounting facility thread length 1.697" overall length tap, circular, bushing mount unef single mounting facility thread series
0.250" single connection inside diameter 3.750" overall length 1.750" overall width 18 single pressure connection thread quantity per inch rectangular npt single pressure connection thread series
Used on oliver perry class ffg, fire control system, mk 92 (fcs). 2a thread class right-hand 0.875" overall length 0.812" overall width 28 thread quantity per inch weapon system essential unef thread series