3a 3rd end thread class 12 1st end thread quantity per inch machined groove in flared ends toaccommodate seal ring per kc 103 passivate surface treated un 3rd end thread series
3a 3rd end thread class 12 1st end thread quantity per inch machined groove in flared ends toaccommodate seal ring per kc 103 passivate surface treated un 3rd end thread series