3b thread class right-hand 1.7655" overall length 0.18985" bore diameter 24 thread quantity per inch locking slot per nas 513 required per suffix c to the dash number; steel corrosion resistant aisi 301 seal retainers cadmium all external/exposed metal surfaces surface treated double row, staggered, ball unjf thread series
Used on fairbanks morse fire pump model 5972-3in onboard 378 ft whec coast guard vessels. 3.1250" bore diameter 3.625" housing length 20 thread quantity per inch cylindrical cartridge unc thread series