2a single mounting facility thread class 0.375" single mounting facility thread length 3.417" overall length circular wafer, bushing mount unef single mounting facility thread series
3b single pressure connection thread class 0.562" single connection inside diameter 3.250" overall length cylindrical unf single pressure connection thread series
Used on emergency ships service generator onboard 378 ft whec coast guard vessels. 4.260" overall length 1.500" overall width 20 single pressure connection thread quantity per inch unf single pressure connection thread series