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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
Plug for fractional tube
Unit of Measure
1 2 

Item #

Connection Type

Tube O.D.

Thread

A

W HEX

1 FNZ N/A CPI™ N/A 1/16 in N/A 10-32 N/A .31 in N/A 5/16 in
2 FNZ N/A CPI™ N/A 1/8 in N/A 5/16-20 N/A .47 in N/A 7/16 in
3 FNZ N/A CPI™ N/A 3/16 in N/A 3/8-20 N/A .47 in N/A 1/2 in
4 FNZ N/A CPI™ N/A 1/4 in N/A 7/16-20 N/A .50 in N/A 9/16 in
5 FNZ N/A CPI™ N/A 5/16 in N/A 1/2-20 N/A .53 in N/A 5/8 in
6 FNZ N/A CPI™ N/A 3/8 in N/A 9/16-20 N/A .56 in N/A 11/16 in
8 FNZ N/A CPI™ N/A 1/2 in N/A 3/4-20 N/A .69 in N/A 7/8 in
10 FNZ N/A CPI™ N/A 5/8 in N/A 7/8-20 N/A .69 in N/A 1 in
12 FNZ N/A CPI™ N/A 3/4 in N/A 1-20 N/A .69 in N/A 1 1/8 in
14 FNZ N/A CPI™ N/A 7/8 in N/A 1 1/8-20 N/A .69 in N/A 1 1/4 in
16 FNZ N/A CPI™ N/A 1 in N/A 1 5/16-20 N/A .81 in N/A 1 1/2 in
20 FNZ N/A CPI™ N/A 1 1/4 in N/A 1 5/8-20 N/A 1.35 in N/A 1 7/8 in
24 FNZ N/A CPI™ N/A 1 1/2 in N/A 1 15/16-20 N/A 1.72 in N/A 2 1/4 in
32 FNZ N/A CPI™ N/A 2 in N/A 2 5/8-20 N/A 2.27 in N/A 2 3/4 in
1BLP1 N/A A-LOK® N/A 1/16 in N/A 10-32 N/A .31 in N/A 5/16 in
2BLP2 N/A A-LOK® N/A 1/8 in N/A 5/16-20 N/A .47 in N/A 7/16 in
3BLP3 N/A A-LOK® N/A 3/16 in N/A 3/8-20 N/A .47 in N/A 1/2 in
4BLP4 N/A A-LOK® N/A 1/4 in N/A 7/16-20 N/A .50 in N/A 9/16 in
5BLP5 N/A A-LOK® N/A 5/16 in N/A 1/2-20 N/A .53 in N/A 5/8 in
6BLP6 N/A A-LOK® N/A 3/8 in N/A 9/16-20 N/A .56 in N/A 11/16 in
8BLP8 N/A A-LOK® N/A 1/2 in N/A 3/4-20 N/A .69 in N/A 7/8 in
10BLP10 N/A A-LOK® N/A 5/8 in N/A 7/8-20 N/A .69 in N/A 1 in
12BLP12 N/A A-LOK® N/A 3/4 in N/A 1-20 N/A .69 in N/A 1 1/8 in
14BLP14 N/A A-LOK® N/A 7/8 in N/A 1 1/8-20 N/A .69 in N/A 1 1/4 in
16BLP16 N/A A-LOK® N/A 1 in N/A 1 5/16-20 N/A .81 in N/A 1 1/2 in
Unit of Measure
1 2