Parker 61VL-6 Compression Tube Nut Brass 3/8 Inch Od

Product Description

The PARKER 61VL-6 is a brass compression tube nut designed to secure compression-style tube connections in fluid and pneumatic line assemblies. It mates with a 3/8-inch outside-diameter tube and uses a 5/8-24 straight thread with NPTF thread standard for a pressure-resistant seal. Built from brass, this nut offers corrosion resistance and reliable torque retention in both hydraulic and pneumatic applications. It meets ISO 6149 and SAE J1926 standards, making it suitable for systems where dimensional and pressure conformance is required. Licensed plumbers, pipefitters, and hydraulic technicians are the primary installers.

This compression nut is used in residential and commercial fluid line assemblies, hydraulic circuits, and pneumatic tubing runs where a compression-style end connection is specified. It is rated for service from -30 degrees F to 135 degrees C, covering a wide range of operating environments including refrigeration-adjacent plumbing, industrial hydraulic systems, and general fluid transfer lines. The single-piece nut ships individually and is stocked as a replacement or new-install fitting component.

Key Features

• Brass construction provides corrosion resistance and durability in fluid service
• Compression end connection for tool-assisted, leak-resistant tube termination
• 3/8-inch tube outside diameter compatibility for common tubing sizes
• 5/8-24 straight thread size with NPTF thread standard
• Meets ISO 6149 and SAE J1926 dimensional and performance standards
• Wide operating temperature range: -30 degrees F to 135 degrees C

Compatibility

Designed as an OEM-style compression tube nut for use with 3/8-inch OD tubing in systems requiring ISO 6149 and SAE J1926 compliant fittings.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or hydraulic technicians. Depressurize and drain the line completely before removing or installing any compression fitting. Use the appropriate tube cutter and deburring tool to ensure a clean, square tube end before seating the nut. Follow applicable IPC or system manufacturer torque guidance for brass compression fittings to avoid over-tightening and distorting the ferrule seat.