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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.
  • Parts are supplied with nitrile o-rings as standard. For Fluorocarbon o-rings, add the suffix “-VO”. Other o-rings available upon request.
  • Male Run Tee SAE Straight Thread for fractional tube
    Unit of Measure
    1 

    Item #

    Connection Type

    Straight Thread Size

    A

    C

    H

    L

    R

    W HEX

    O-Ring Arp Uniform Dash No.

    4-4-4 R5BZ N/A CPI™ x Straight Thread x CPI™ N/A 7/16-20 N/A 2.24 in N/A 1.12 in N/A 1.12 in N/A .83 in N/A .83 in N/A 7/16 in N/A 3-904
    6-6-6 R5BZ N/A CPI™ x Straight Thread x CPI™ N/A 9/16-18 N/A 2.51 in N/A 1.26 in N/A 1.25 in N/A .97 in N/A .84 in N/A 9/16 in N/A 3-906
    8-8-8 R5BZ N/A CPI™ x Straight Thread x CPI™ N/A 3/4-16 N/A 2.93 in N/A 1.48 in N/A 1.45 in N/A 1.08 in N/A .97 in N/A 3/4 in N/A 3-908
    12-12-12 R5BZ N/A CPI™ x Straight Thread x CPI™ N/A 1 1/16-12 N/A 3.57 in N/A 1.63 in N/A 1.94 in N/A 1.23 in N/A 1.28 in N/A 1 1/16 in N/A 3-912
    16-16-16 R5BZ N/A CPI™ x Straight Thread x CPI™ N/A 1 5/16-12 N/A 3.92 in N/A 1.87 in N/A 2.05 in N/A 1.38 in N/A 1.28 in N/A 1 5/16 in N/A 3-916
    4M5RT4 N/A A-LOK® x Straight Thread x A-LOK® N/A 7/16-20 N/A 2.15 in N/A 1.12 in N/A 1.03 in N/A .83 in N/A .83 in N/A 7/16 in N/A 3-904
    6M5RT6 N/A A-LOK® x Straight Thread x A-LOK® N/A 9/16-18 N/A 2.51 in N/A 1.26 in N/A 1.25 in N/A .97 in N/A .84 in N/A 9/16 in N/A 3-906
    8M5RT8 N/A A-LOK® x Straight Thread x A-LOK® N/A 3/4-16 N/A 2.93 in N/A 1.48 in N/A 1.45 in N/A 1.08 in N/A .97 in N/A 3/4 in N/A 3-908
    12M5RT12 N/A A-LOK® x Straight Thread x A-LOK® N/A 1 1/16-12 N/A 3.57 in N/A 1.63 in N/A 1.94 in N/A 1.23 in N/A 1.28 in N/A 1 1/16 in N/A 3-912
    16M5RT16 N/A A-LOK® x Straight Thread x A-LOK® N/A 1 5/16-12 N/A 3.92 in N/A 1.87 in N/A 2.05 in N/A 1.38 in N/A 1.28 in N/A 1 5/16 in N/A 3-916
    Unit of Measure
    1