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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 thatmore
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Item #

Connection Type

T1 Turned End Tube O.D.

T2 Machined End Tube O.D.

A

C

K

W A/F HEX

Bore

N/A Tube to CPI™ N/A 1/8 in N/A 3.0 mm N/A 34.3 mm N/A 15.3 mm N/A 13.5 mm N/A 12.0 mm N/A 1.3 mm
N/A Tube to CPI™ N/A 1/4 in N/A 3.0 mm N/A 36.1 mm N/A 15.3 mm N/A 16.0 mm N/A 12.0 mm N/A 4.8 mm
N/A Tube to CPI™ N/A 1/4 in N/A 6.0 mm N/A 39.3 mm N/A 17.7 mm N/A 16.0 mm N/A 14.0 mm N/A 4.8 mm
N/A Tube to CPI™ N/A 5/16 in N/A 6.0 mm N/A 40.0 mm N/A 17.7 mm N/A 16.8 mm N/A 14.0 mm N/A 6.4 mm
N/A Tube to CPI™ N/A 3/8 in 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 7.1 mm
N/A Tube to CPI™ N/A 1/2 in N/A 6.0 mm N/A 46.4 mm N/A 17.7 mm N/A 23.1 mm N/A 14.0 mm N/A 4.8 mm
N/A Tube to CPI™ N/A 3/8 in 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 7.1 mm
N/A Tube to CPI™ N/A 1/2 in N/A 8.0 mm N/A 47.5 mm N/A 18.6 mm N/A 23.1 mm N/A 15.0 mm N/A 9.9 mm
N/A Tube to CPI™ N/A 3/8 in N/A 10.0 mm N/A 44.4 mm N/A 19.5 mm N/A 17.5 mm N/A 18.0 mm N/A 7.1 mm
N/A Tube to CPI™ N/A 1/2 in N/A 10.0 mm N/A 47.6 mm N/A 19.5 mm N/A 23.1 mm N/A 18.0 mm N/A 9.9 mm
N/A Tube to CPI™ N/A 1/2 in N/A 12.0 mm N/A 52.3 mm N/A 22.0 mm N/A 23.1 mm N/A 22.0 mm N/A 9.9 mm
N/A Tube to CPI™ N/A 3/4 in N/A 12.0 mm N/A 53.8 mm N/A 22.0 mm N/A 24.6 mm N/A 22.0 mm N/A 15.0 mm
N/A Tube to CPI™ N/A 3/4 in N/A 18.0 mm N/A 57.5 mm N/A 22.0 mm N/A 24.6 mm N/A 27.0 mm N/A 15.0 mm
N/A Tube to A-LOK® N/A 1/8 in N/A 3.0 mm N/A 34.3 mm N/A 15.3 mm N/A 13.5 mm N/A 12.0 mm N/A 1.3 mm
N/A Tube to A-LOK® N/A 1/4 in N/A 3.0 mm N/A 36.1 mm N/A 15.3 mm N/A 16.0 mm N/A 12.0 mm N/A 4.8 mm
N/A Tube to A-LOK® N/A 1/4 in N/A 6.0 mm N/A 39.3 mm N/A 17.7 mm N/A 16.0 mm N/A 14.0 mm N/A 4.8 mm
N/A Tube to A-LOK® N/A 5/16 in N/A 6.0 mm N/A 40.0 mm N/A 17.7 mm N/A 16.8 mm N/A 14.0 mm N/A 6.4 mm
N/A Tube to A-LOK® N/A 3/8 in 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 7.1 mm
N/A Tube to A-LOK® N/A 1/2 in N/A 6.0 mm N/A 46.4 mm N/A 17.7 mm N/A 23.1 mm N/A 14.0 mm N/A 4.8 mm
N/A Tube to A-LOK® N/A 3/8 in 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 7.1 mm
N/A Tube to A-LOK® N/A 1/2 in N/A 8.0 mm N/A 47.5 mm N/A 18.6 mm N/A 23.1 mm N/A 15.0 mm N/A 9.9 mm
N/A Tube to A-LOK® N/A 3/8 in N/A 10.0 mm N/A 44.4 mm N/A 19.5 mm N/A 17.5 mm N/A 18.0 mm N/A 7.1 mm
N/A Tube to A-LOK® N/A 1/2 in N/A 10.0 mm N/A 47.6 mm N/A 19.5 mm N/A 23.1 mm N/A 18.0 mm N/A 9.9 mm
N/A Tube to A-LOK® N/A 1/2 in N/A 12.0 mm N/A 52.3 mm N/A 22.0 mm N/A 23.1 mm N/A 22.0 mm N/A 9.9 mm
N/A Tube to A-LOK® N/A 3/4 in N/A 12.0 mm N/A 53.8 mm N/A 22.0 mm N/A 24.6 mm N/A 22.0 mm N/A 15.0 mm
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