SMC One-Touch Fitting Male Connectors

KQH
Most common style used to pipe from female thread in the same direction.
KQH04-01S: Tube O.D. 4mm. Thread: R1/8.
KQH04-M5: Tube O.D. 4mm. Thread: M5 X 0.8..
KQH08-01S: Tube O.D. 8mm. Thread: R1/8.
KQH08-02S: Tube O.D. 8mm. Thread: R1/4.