PARKER Compression Fitting Union: 1/4 in OD x 1/4 in OD Size, Compression x Compression
The PARKER Compression Fitting Union (MPN 4SC4-B) is a double-ferrule brass compression fitting with a 1/4 in OD x 1/4 in OD size and Compression x Compression type. It is compatible with Parker A-LOK fitting brands…
SKU 3G-OTH-473511
Need installation or engineering help?
Ask a question
Product Description
The PARKER Compression Fitting Union (MPN 4SC4-B) is a double-ferrule brass compression fitting with a 1/4 in OD x 1/4 in OD size and Compression x Compression type. It is compatible with Parker A-LOK fitting brands, providing a reliable connection for industrial tubing systems.
Frequently Asked Questions
What is a PARKER Compression Fitting Union used for?
A PARKER Compression Fitting Union connects two tubes of the same outer diameter in industrial tubing systems. Its double-ferrule brass design creates a leak-tight seal, making it suitable for instrumentation, hydraulic, and pneumatic applications where reliable, vibration-resistant connections are required.
What are the specifications of the PARKER 4SC4-B compression fitting?
The PARKER 4SC4-B is a double-ferrule brass compression union with 1/4 in OD x 1/4 in OD size and Compression x Compression type. It is compatible with Parker A-LOK fitting brands. The manufacturer part number is 4SC4-B, and the body material is brass.
Where to buy PARKER compression fittings in worldwide?
3G Electric supplies PARKER compression fittings like the 4SC4-B to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this double-ferrule brass union.
How to install a double-ferrule compression fitting?
To install a PARKER double-ferrule compression fitting, slide the nut and ferrules onto the tube, insert the tube fully into the fitting body, then tighten the nut by hand. Use a wrench to tighten an additional 1-1/4 turns for 1/4 in OD tubing. Always follow the manufacturer's instructions for torque and tube preparation.
Used in
Common applications for PARKERPARKER Products
3G Electric supplies PARKER double-ferrule brass compression fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









