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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
Thermocouple Connector for fractional tube
Unit of Measure
1 2 

Item #

Connection Type

NPT Pipe Thread

A

C

R

W HEX

2MTC1N N/A A-LOK® to NPT N/A 1/16 N/A 1.17 in N/A .60 in N/A .38 in N/A 3/8 in
2MTC2N N/A A-LOK® to NPT N/A 1/8 N/A 1.20 in N/A .60 in N/A .38 in N/A 7/16 in
2MTC4N N/A A-LOK® to NPT N/A 1/4 N/A 1.40 in N/A .60 in N/A .56 in N/A 9/16 in
3MTC2N N/A A-LOK® to NPT N/A 1/8 N/A 1.23 in N/A .64 in N/A .38 in N/A 7/16 in
3MTC4N N/A A-LOK® to NPT N/A 1/4 N/A 1.43 in N/A .64 in N/A .56 in N/A 9/16 in
4MTC2N N/A A-LOK® to NPT N/A 1/8 N/A 1.29 in N/A .70 in N/A .38 in N/A 1/2 in
4MTC4N N/A A-LOK® to NPT N/A 1/4 N/A 1.49 in N/A .70 in N/A .56 in N/A 9/16 in
4MTC6N N/A A-LOK® to NPT N/A 3/8 N/A 1.60 in N/A .70 in N/A .56 in N/A 11/16 in
4MTC8N N/A A-LOK® to NPT N/A 1/2 N/A 1.87 in N/A .70 in N/A .76 in N/A 7/8 in
5MTC4N N/A A-LOK® to NPT N/A 1/4 N/A 1.52 in N/A .73 in N/A .56 in N/A 9/16 in
6MTC4N N/A A-LOK® to NPT N/A 1/4 N/A 1.57 in N/A .76 in N/A .56 in N/A 5/8 in
6MTC6N N/A A-LOK® to NPT N/A 3/8 N/A 1.57 in N/A .76 in N/A .56 in N/A 11/16 in
6MTC8N N/A A-LOK® to NPT N/A 1/2 N/A 1.82 in N/A .76 in N/A .76 in N/A 7/8 in
6MTC12N N/A A-LOK® to NPT N/A 3/4 N/A 1.88 in N/A .76 in N/A .75 in N/A 1 1/16 in
8MTC8N N/A A-LOK® to NPT N/A 1/2 N/A 1.93 in N/A .87 in N/A .76 in N/A 7/8 in
8MTC12N N/A A-LOK® to NPT N/A 3/4 N/A 1.99 in N/A .87 in N/A .75 in N/A 1 1/16 in
10MTC12N N/A A-LOK® to NPT N/A 3/4 N/A 1.99 in N/A .87 in N/A .75 in N/A 1 1/16 in
12MTC12N N/A A-LOK® to NPT N/A 3/4 N/A 1.99 in N/A .87 in N/A .75 in N/A 1 1/16 in
16MTC16N N/A A-LOK® to NPT N/A 1 N/A 2.46 in N/A 1.05 in N/A .94 in N/A 1 3/8 in
Unit of Measure
1 2