BKF 34-0.3/M20 BKF 34-0.3/18.375/NPT BKF 34-0.3/14.5/NPT BKF 34-0.2/14.5/NPT BKF 22-6/M18/S717 BKF 22-5/14.5/NPT BKF 22-4/M20 BKF 22-4/M18/S717 BKF 22-3/14.5/NPT BKF 22-3.9/M18/S717