3a thread class right-hand 11.4850" overall length 1.9995" bore diameter 12 thread quantity per inch used on mx t&h; altered from ST36D42-7 chromium inner member surface treated ball type un thread series
Used on reduction gear salt water cooling pump model 3x4 sl buffalo forge onboard 378 ft whec class coast guard vessels. 5.000" outside diameter provisions for 1/8 in. round