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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.
  • For use with SAE J.1926/1 port can also be used with MS-16142 port.
  • Sizes 20, 24, 32 require additional lubrication prior to assembly.
  • Parts are supplied with nitrile o-rings as standard. For Fluorocarbon o-rings, add the suffix "-VO". Other o-rings available upon request.
  • Male Connector to SAE Straight Thread for fractional tube
    Unit of Measure
    Items Male Connector to SAE Straight Thread for fractional tube
    1-2 ZHBA
    Male Connector to SAE Straight Thread for fractional tube
    Male Connector to SAE Straight Thread for fractional tube
    2-2 ZHBA
    Male Connector to SAE Straight Thread for fractional tube
    Male Connector to SAE Straight Thread for fractional tube
    2-6 ZHBA
    Male Connector to SAE Straight Thread for fractional tube
    Male Connector to SAE Straight Thread for fractional tube
    3-3 ZHBA
    Male Connector to SAE Straight Thread for fractional tube
    Male Connector to SAE Straight Thread for fractional tube
    4-4 ZHBA
    Male Connector to SAE Straight Thread for fractional tube
    Connection Type N/A CPI™ to SAE
    Straight Thread Size N/A 5/16-24 N/A 5/16-24 N/A 9/16-18 N/A 3/8-24 N/A 7/16-20
    A N/A .92 in N/A 1.18 in N/A 1.35 in N/A 1.20 in N/A 1.34 in
    C N/A .43 in N/A .60 in N/A .60 in N/A .64 in N/A .70 in
    R N/A .30 in N/A .30 in N/A .39 in N/A .30 in N/A .36 in
    W HEX N/A 7/16 in N/A 7/16 in N/A 11/16 in N/A 1/2 in N/A 9/16 in
    O-Ring As Uniform Dash No. N/A 3-902 N/A 3-902 N/A 3-906 N/A 3-903 N/A 3-904