Used on main reduction gear assembly onboard 400 ft wagb class coast guard vessels. 15.0025" overall length tin surface treated 17b segmented, plain, no outside flanges
3a thread class right-hand 1.8750" overall length 0.1895" bore diameter std NAS559 keyway in shank, chromium plating 0.0002 in. min, 0.0005 in. max thick ball type