3a 2nd end thread class 12 1st end thread quantity per inch KC124C28; machined groove in flared ends to accommodate seal ring per KC103 passivate surface treated threaded un 1st end thread series
3a 2nd end thread class 12 1st end thread quantity per inch KC124c-32; machined groove in flared ends to accommodate seal ring per KC103 passivate surface treated threaded un 1st end thread series