John Guest screw-on connector parallel thread (BSP, guide groove)

John Guest screw-on connector 5/8" BSP internal thread with internal guide groove

1. Number: Outer diameter pipe
2nd number: thread size

• PI451015CS: 5/16" x 5/8" female
• NCPI451214CS: 3/8" x 1/2" IT (small inner cone)
• PI451615CS: 1/2" x 5/8" female
• PI451616CS: 1/2" x 3/4" female