PARKER Compression Fitting Adapter: 1/4 in OD x 1/4 in Pipe Fitting Size, Compression x FNPTF
The PARKER Compression Fitting Adapter (MPN 66C-4-4) is a standard sleeve brass compression fitting, type Compression x FNPTF, supplied in a 10-pack. It accommodates a 1/4 in OD tube and a 1/4 in pipe fitting size…
SKU 3G-OTH-481912
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Product Description
The PARKER Compression Fitting Adapter (MPN 66C-4-4) is a standard sleeve brass compression fitting, type Compression x FNPTF, supplied in a 10-pack. It accommodates a 1/4 in OD tube and a 1/4 in pipe fitting size. 3G Electric sources this OEM part across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
Frequently Asked Questions
What is the PARKER 66C-4-4 compression fitting adapter used for?
The PARKER 66C-4-4 adapter connects 1/4 in OD tubing to 1/4 in FNPTF threaded ports in pneumatic, hydraulic, and instrumentation systems. It is a standard sleeve brass compression fitting, ideal for leak-free sealing in industrial fluid and gas lines.
What are the specifications of the PARKER 66C-4-4 compression fitting?
The PARKER 66C-4-4 is a brass compression fitting adapter with type Compression x FNPTF. It fits 1/4 in OD tube and 1/4 in pipe size, supplied in a 10-pack. The OEM part number is 66C-4-4, manufactured by PARKER.
Where to buy PARKER 66C-4-4 compression fittings worldwide?
3G Electric supplies the PARKER 66C-4-4 compression fitting adapter worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source this OEM part across 14 departments, including pneumatics and instrumentation.
How to install a PARKER compression fitting adapter?
To install the PARKER 66C-4-4, slide the nut and sleeve onto the tube, insert the tube fully into the fitting body, then tighten the nut by hand followed by 1/4 to 1/2 turn with a wrench. Avoid overtightening to prevent brass sleeve deformation.
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.









