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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.
    • NPT Female Run Tee for metric tube
    Unit of Measure
    1 

    Item #

    Connection Type

    Tube O.D.

    NPT Pipe Thread

    A

    C

    H

    L

    W HEX

    MBZ 6-1/8-6 N/A CPI™ x FNPT x CPI™ N/A 6.0 mm N/A 1/8 N/A 46.0 mm N/A 26.9 mm N/A 19.1 mm N/A 19.5 mm N/A 1/2 in
    MBZ 6-1/4-6 N/A CPI™ x FNPT x CPI™ N/A 6.0 mm N/A 1/4 N/A 52.1 mm N/A 29.7 mm N/A 22.4 mm N/A 22.4 mm N/A 11/16 in
    MBZ 8-1/8-8 N/A CPI™ x FNPT x CPI™ N/A 8.0 mm N/A 1/8 N/A 49.3 mm N/A 30.2 mm N/A 19.1 mm N/A 22.4 mm N/A 5/8 in
    MBZ 10-1/4-10 N/A CPI™ x FNPT x CPI™ N/A 10.0 mm N/A 1/4 N/A 55.9 mm N/A 33.5 mm N/A 22.4 mm N/A 25.9 mm N/A 13/16 in
    MBZ 12-1/4-12 N/A CPI™ x FNPT x CPI™ N/A 12.0 mm N/A 1/4 N/A 58.5 mm N/A 36.1 mm N/A 22.4 mm N/A 25.9 mm N/A 13/16 in
    MBZ 12-3/8-12 N/A CPI™ x FNPT x CPI™ N/A 12.0 mm N/A 3/8 N/A 58.5 mm N/A 36.1 mm N/A 22.4 mm N/A 25.9 mm N/A 13/16 in
    MBZ 12-1/2-12 N/A CPI™ x FNPT x CPI™ N/A 12.0 mm N/A 1/2 N/A 67.4 mm N/A 38.8 mm N/A 28.6 mm N/A 28.7 mm N/A 1 in
    MBZ 16-1/2-16 N/A CPI™ x FNPT x CPI™ N/A 16.0 mm N/A 1/2 N/A 68.5 mm N/A 39.9 mm N/A 28.6 mm N/A 29.7 mm N/A 1 1/16 in
    M6FRT1/8N N/A A-LOK® x FNPT x A-LOK® N/A 6.0 mm N/A 1/8 N/A 46.0 mm N/A 26.9 mm N/A 19.1 mm N/A 19.5 mm N/A 1/2 in
    M6FRT1/4N N/A A-LOK® x FNPT x A-LOK® N/A 6.0 mm N/A 1/4 N/A 52.1 mm N/A 29.7 mm N/A 22.4 mm N/A 22.4 mm N/A 11/16 in
    M8FRT1/8N N/A A-LOK® x FNPT x A-LOK® N/A 8.0 mm N/A 1/8 N/A 49.3 mm N/A 30.2 mm N/A 19.1 mm N/A 22.4 mm N/A 5/8 in
    M10FRT1/4N N/A A-LOK® x FNPT x A-LOK® N/A 10.0 mm N/A 1/4 N/A 55.9 mm N/A 33.5 mm N/A 22.4 mm N/A 25.9 mm N/A 13/16 in
    M12FRT1/4N N/A A-LOK® x FNPT x A-LOK® N/A 12.0 mm N/A 1/4 N/A 58.5 mm N/A 36.1 mm N/A 22.4 mm N/A 25.9 mm N/A 13/16 in
    M12FRT3/8N N/A A-LOK® x FNPT x A-LOK® N/A 12.0 mm N/A 3/8 N/A 58.5 mm N/A 36.1 mm N/A 22.4 mm N/A 25.9 mm N/A 13/16 in
    M12FRT1/2N N/A A-LOK® x FNPT x A-LOK® N/A 12.0 mm N/A 1/2 N/A 67.4 mm N/A 38.8 mm N/A 28.6 mm N/A 28.7 mm N/A 1 in
    M16FRT1/2N N/A A-LOK® x FNPT x A-LOK® N/A 16.0 mm N/A 1/2 N/A 68.5 mm N/A 39.9 mm N/A 28.6 mm N/A 29.7 mm N/A 1 1/16 in
    Unit of Measure
    1