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

Product Description

The PARKER 61NTA-6 is a brass compression tube nut designed for use in hydraulic and pneumatic tubing assemblies that require a secure, leak-resistant mechanical connection. It mates with compression-style fittings to clamp tubing in place without solder, flare, or thread sealant. The nut is sized for 3/8-inch outside diameter tubing and is rated to 150 psi maximum working pressure. Temperature range spans -40 degrees F to 200 degrees F, making it suitable for a broad range of fluid and air line applications. It meets DOT FMVSS571.106, SAE J1131, and SAE J246 standards. Installation is performed by licensed plumbers, HVAC technicians, and fluid power mechanics depending on the system.

This compression tube nut is used in residential and light commercial applications where tubing connections must meet DOT and SAE standards. Common install scenarios include brake line assemblies, fuel lines, refrigerant-adjacent tubing, and compressed air distribution where compression-style fittings are specified. The 3/8-inch OD sizing is a widely used dimension across HVAC, plumbing, and fluid power systems. Sold individually with a minimum order quantity of 5 pieces per order.

Key Features

• Brass construction for corrosion resistance and reliable sealing in fluid and air service
• Sized for 3/8-inch outside diameter tubing
• Rated to 150 psi maximum working pressure
• Operating temperature range: -40 degrees F to 200 degrees F
• Meets DOT FMVSS571.106, SAE J1131, and SAE J246 standards
• Compression-style end connection — no soldering or flaring required

Compatibility

Designed as an OEM-style compression tube nut for use with standard compression fittings on 3/8-inch OD tubing in systems requiring DOT and SAE J-series compliant components.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or fluid power mechanic. Depressurize and isolate the line before disassembly or installation. Hand-tighten the nut onto the fitting body before applying a wrench to avoid cross-threading. Follow applicable SAE and DOT guidelines for tubing preparation, ferrule seating, and final torque to ensure a leak-free connection.