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Parker CPI™/A-LOK® Instrumentation Tube Fittings are designed as leak-free connections for process, power and instrumentation applications. The CPI tube fittings utilize a single ferrule for easy make-up and excellent performance in vibration applications. The “spring loaded” effect of the single ferrule creates a constant tension between the fitting body and fitting nut. The A-LOK two ferrule compression tube fittings are designed to provide reliable leak-free connections for applications that specify a two ferrule system. These single and two ferrule fitting designs are manufactured to the highest quality standards and are available in a broad range of sizes, materials and configurations.

NOTE:
  • Dimensions for reference only, subject to change.
  • A and C dimensions are typical finger-tight.
  • Tube stub is pre-grooved as standard.
  • Add -Z6 for assembly of nuts and ferrules on the tube stub end.
    • Tube End Reducer for metric tube
    Unit of Measure
    1 2 

    Item #

    Connection Type

    T1 Turned End Tube O.D.

    T2 Machined End Tube O.D.

    A

    C

    K

    W HEX

    Bore

    TRBZ 6-3 N/A Tube to CPI™ N/A 6.0 mm N/A 3.0 mm N/A 36.1 mm N/A 15.3 mm N/A 17.9 mm N/A 12.0 mm N/A 2.4 mm
    TRBZ 6-10 N/A Tube to CPI™ N/A 6.0 mm N/A 10.0 mm N/A 42.4 mm N/A 19.5 mm N/A 17.9 mm N/A 18.0 mm N/A 4.0 mm
    TRBZ 8-6 N/A Tube to CPI™ N/A 8.0 mm N/A 6.0 mm N/A 42.0 mm N/A 17.7 mm N/A 16.7 mm N/A 14.0 mm N/A 4.8 mm
    TRBZ 10-6 N/A Tube to CPI™ N/A 10.0 mm N/A 6.0 mm N/A 45.6 mm N/A 17.7 mm N/A 21.0 mm N/A 14.0 mm N/A 4.8 mm
    TRBZ 10-8 N/A Tube to CPI™ N/A 10.0 mm N/A 8.0 mm N/A 46.5 mm N/A 18.6 mm N/A 21.0 mm N/A 15.0 mm N/A 6.4 mm
    TRBZ 10-12 N/A Tube to CPI™ N/A 10.0 mm N/A 12.0 mm N/A 49.9 mm N/A 22.0 mm N/A 21.0 mm N/A 22.0 mm N/A 7.5 mm
    TRBZ 12-6 N/A Tube to CPI™ N/A 12.0 mm N/A 6.0 mm N/A 50.7 mm N/A 17.7 mm N/A 26.0 mm N/A 14.0 mm N/A 4.8 mm
    TRBZ 12-8 N/A Tube to CPI™ N/A 12.0 mm N/A 8.0 mm N/A 51.6 mm N/A 18.6 mm N/A 26.0 mm N/A 15.0 mm N/A 6.4 mm
    TRBZ 12-10 N/A Tube to CPI™ N/A 12.0 mm N/A 10.0 mm N/A 49.7 mm N/A 19.5 mm N/A 26.0 mm N/A 18.0 mm N/A 7.9 mm
    TRBZ 12-16 N/A Tube to CPI™ N/A 12.0 mm N/A 16.0 mm N/A 52.6 mm N/A 22.0 mm N/A 26.0 mm N/A 24.0 mm N/A 9.1 mm
    M3TURM2 N/A Tube to A-LOK® N/A 3.0 mm N/A 2.0 mm N/A 34.3 mm N/A 15.3 mm N/A 13.7 mm N/A 12.0 mm N/A 1.4 mm
    M3TURM6 N/A Tube to A-LOK® N/A 3.0 mm N/A 6.0 mm N/A 37.0 mm N/A 17.7 mm N/A 13.5 mm N/A 14.0 mm N/A 1.4 mm
    M4TURM3 N/A Tube to A-LOK® N/A 4.0 mm N/A 3.0 mm N/A 35.0 mm N/A 15.3 mm N/A 14.3 mm N/A 12.0 mm N/A 2.0 mm
    M6TURM3 N/A Tube to A-LOK® N/A 6.0 mm N/A 3.0 mm N/A 36.1 mm N/A 15.3 mm N/A 15.9 mm N/A 12.0 mm N/A 2.4 mm
    M6TURM4 N/A Tube to A-LOK® N/A 6.0 mm N/A 4.0 mm N/A 37.1 mm N/A 16.1 mm N/A 15.9 mm N/A 12.0 mm N/A 3.0 mm
    M6TURM8 N/A Tube to A-LOK® N/A 6.0 mm N/A 8.0 mm N/A 40.0 mm N/A 18.6 mm N/A 15.9 mm N/A 15.0 mm N/A 4.0 mm
    M6TURM10 N/A Tube to A-LOK® N/A 6.0 mm N/A 10.0 mm N/A 41.7 mm N/A 19.5 mm N/A 15.9 mm N/A 18.0 mm N/A 4.0 mm
    M6TURM12 N/A Tube to A-LOK® N/A 6.0 mm N/A 12.0 mm N/A 44.9 mm N/A 22.0 mm N/A 15.9 mm N/A 22.0 mm N/A 4.0 mm
    M8TURM6 N/A Tube to A-LOK® N/A 8.0 mm N/A 6.0 mm N/A 40.0 mm N/A 17.7 mm N/A 16.7 mm N/A 14.0 mm N/A 4.8 mm
    M8TURM10 N/A Tube to A-LOK® N/A 8.0 mm N/A 10.0 mm N/A 43.4 mm N/A 19.5 mm N/A 15.3 mm N/A 19.5 mm N/A 6.5 mm
    M10TURM3 N/A Tube to A-LOK® N/A 10.0 mm N/A 3.0 mm N/A 38.6 mm N/A 15.3 mm N/A 17.7 mm N/A 15.3 mm N/A 6.0 mm
    M10TURM6 N/A Tube to A-LOK® N/A 10.0 mm N/A 6.0 mm N/A 40.8 mm N/A 17.7 mm N/A 17.5 mm N/A 14.0 mm N/A 4.8 mm
    M10TURM8 N/A Tube to A-LOK® N/A 10.0 mm N/A 8.0 mm N/A 42.0 mm N/A 18.6 mm N/A 17.5 mm N/A 15.0 mm N/A 6.4 mm
    M10TURM12 N/A Tube to A-LOK® N/A 10.0 mm N/A 12.0 mm N/A 46.6 mm N/A 22.0 mm N/A 17.5 mm N/A 22.0 mm N/A 7.5 mm
    M12TURM6 N/A Tube to A-LOK® N/A 12.0 mm N/A 6.0 mm N/A 46.4 mm N/A 17.7 mm N/A 23.0 mm N/A 14.0 mm N/A 4.8 mm
    Unit of Measure
    1 2