

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The PRO-SOURCE 2557504565PRO is a push-to-connect tube fitting designed for tube-to-metric-thread connections in compressed air and water systems. The body is constructed from nickel-plated brass, providing corrosion resistance in typical pneumatic and fluid-handling environments. It accepts a 4 mm outside diameter tube and threads into M5 metric ports. The fitting is rated to 250 psi maximum working pressure and handles temperatures from 0 degrees F to 160 degrees F. The O-ring is Buna material, suited for both compressed air and water service. Plumbers, pipefitters, pneumatic system technicians, and industrial maintenance professionals install this type of fitting during system assembly or service.
This fitting is used in residential and light commercial pneumatic and fluid-distribution systems where metric-threaded ports are standard. Typical applications include compressed air distribution lines, water supply circuits, and equipment with M5 metric port connections. It is sold in a package quantity of five, making it practical for multi-point installations or service stock. The push-to-connect design allows fast, tool-free tube insertion without soldering or threading the tube end.
Designed for use with compressed air and water systems requiring a push-to-connect tube-to-M5 metric thread fitting with a 4 mm outside diameter tube connection.
Installation should be performed by a qualified plumber, pipefitter, or pneumatic systems technician. Depressurize and isolate the system completely before removing or installing any fitting. Ensure the tube end is cut cleanly and squarely, and that the tube outside diameter matches the fitting specification before insertion. Follow applicable codes such as ASME B31.1 or local mechanical codes for compressed air and fluid piping systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!