PARKER Compression Fitting Adapter: 3/8 in OD x 1/4 in Pipe Fitting Size, Compression x FNPTF
The PARKER Compression Fitting Adapter (MPN 66C-6-4) is a standard sleeve brass compression fitting, type Compression x FNPTF, supplied in a 10-pack. It connects 3/8 in OD tubing to a 1/4 in pipe fitting size. 3G…
SKU 3G-OTH-482032
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Product Description
The PARKER Compression Fitting Adapter (MPN 66C-6-4) is a standard sleeve brass compression fitting, type Compression x FNPTF, supplied in a 10-pack. It connects 3/8 in OD tubing to a 1/4 in pipe fitting size. 3G Electric interprets your demand for this OEM part, sources it, and supports your application across 14 industrial departments, with specialist depth in combustion, pumps, and controls.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the PARKER 66C-6-4 compression fitting adapter used for?
The PARKER 66C-6-4 adapter connects 3/8 in OD tubing to a 1/4 in pipe fitting using a compression x FNPTF design. It is used in industrial fluid systems for leak-free sealing in pneumatic, hydraulic, and instrumentation lines across machining, power transmission, and other departments.
What are the specifications of the PARKER 66C-6-4 compression fitting?
The PARKER 66C-6-4 is a standard sleeve brass compression fitting, type Compression x FNPTF, supplied in a 10-pack. It connects 3/8 in OD tubing to a 1/4 in pipe fitting size. The brand is PARKER, with manufacturer part number 66C-6-4.
Where to buy PARKER 66C-6-4 compression fittings worldwide?
3G Electric supplies the PARKER 66C-6-4 compression fitting adapter worldwide. We interpret your demand, source the OEM part, and handle logistics, customs, and delivery to your location. Contact us for availability and lead time for your application.
How to install a PARKER compression fitting adapter?
To install the PARKER 66C-6-4, slide the nut and sleeve onto the tubing, insert the tube fully into the fitting body, then tighten the nut by hand. Use a wrench to tighten an additional 1 to 1.25 turns for a leak-free seal. Avoid over-tightening to prevent damage.
Used in
Common applications for PARKERPARKER Products
3G Electric supplies PARKER standard sleeve brass compression fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









