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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.
    • BSP Taper Female Connector for metric tube
    Unit of Measure
    1 2 

    Item #

    Connection Type

    Tube O.D.

    BSPT Thread

    A

    C

    W HEX

    M6FSC3/8K N/A A-LOK® to FBSPT N/A 6.0 mm N/A 3/8 N/A 37.6 mm N/A 17.7 mm N/A 22.0 mm
    M6FSC1/2K N/A A-LOK® to FBSPT N/A 6.0 mm N/A 1/2 N/A 42.5 mm N/A 17.7 mm N/A 27.0 mm
    M8FSC1/8K N/A A-LOK® to FBSPT N/A 8.0 mm N/A 1/8 N/A 32.8 mm N/A 18.6 mm N/A 15.0 mm
    M8FSC1/4K N/A A-LOK® to FBSPT N/A 8.0 mm N/A 1/4 N/A 37.0 mm N/A 18.6 mm N/A 19.0 mm
    M8FSC3/8K N/A A-LOK® to FBSPT N/A 8.0 mm N/A 3/8 N/A 38.5 mm N/A 18.6 mm N/A 22.0 mm
    M8FSC1/2K N/A A-LOK® to FBSPT N/A 8.0 mm N/A 1/2 N/A 43.3 mm N/A 18.6 mm N/A 27.0 mm
    M10FSC1/8K N/A A-LOK® to FBSPT N/A 10.0 mm N/A 1/8 N/A 33.0 mm N/A 19.5 mm N/A 18.0 mm
    M10FSC1/4K N/A A-LOK® to FBSPT N/A 10.0 mm N/A 1/4 N/A 37.8 mm N/A 19.5 mm N/A 19.0 mm
    M10FSC3/8K N/A A-LOK® to FBSPT N/A 10.0 mm N/A 3/8 N/A 39.4 mm N/A 19.5 mm N/A 22.0 mm
    M10FSC1/2K N/A A-LOK® to FBSPT N/A 10.0 mm N/A 1/2 N/A 44.2 mm N/A 19.5 mm N/A 27.0 mm
    M12FSC1/4K N/A A-LOK® to FBSPT N/A 12.0 mm N/A 1/4 N/A 40.3 mm N/A 22.0 mm N/A 22.0 mm
    M12FSC3/8K N/A A-LOK® to FBSPT N/A 12.0 mm N/A 3/8 N/A 41.9 mm N/A 22.0 mm N/A 22.0 mm
    M12FSC1/2K N/A A-LOK® to FBSPT N/A 12.0 mm N/A 1/2 N/A 46.7 mm N/A 22.0 mm N/A 27.0 mm
    M16FSC1/2K N/A A-LOK® to FBSPT N/A 16.0 mm N/A 1/2 N/A 48.4 mm N/A 22.0 mm N/A 27.0 mm
    M20FSC1/2K N/A A-LOK® to FBSPT N/A 20.0 mm N/A 1/2 N/A 54.7 mm N/A 22.0 mm N/A 30.0 mm
    M20FSC3/4K N/A A-LOK® to FBSPT N/A 20.0 mm N/A 3/4 N/A 49.7 mm N/A 22.0 mm N/A 35.0 mm
    M22FSC1K N/A A-LOK® to FBSPT N/A 22.0 mm N/A 1 N/A 57.9 mm N/A 22.0 mm N/A 41.0 mm
    M25FSC3/4K N/A A-LOK® to FBSPT N/A 25.0 mm N/A 3/4 N/A 54.3 mm N/A 26.5 mm N/A 35.0 mm
    M25FSC1K N/A A-LOK® to FBSPT N/A 25.0 mm N/A 1 N/A 61.5 mm N/A 26.5 mm N/A 41.0 mm
    Unit of Measure
    1 2