P/C #6 Tube Nut 2pk

The P/C #6 Tube Nut 2pk from RUSSELL is an essential component for any fuel system, brake line, or hydraulic line assembly in high-performance automotive applications. Whether you're building a custom engine bay, restoring a classic car, or upgrading your vehicle's brake system, these tube nuts serve as the crimped fastening point where steel or braided hoses connect to fittings, ports, and manifolds. RUSSELL tube nuts are engineered to withstand vibration, thermal cycling, and pressure spikes—making them indispensable for serious mechanics and enthusiasts who demand reliability under stress.

Tube nuts differ from standard hex nuts in their design: they feature a flared or swaged end that seats against a pre-formed flare on the tube end, creating a leak-proof, vibration-resistant connection without requiring a ferrule or additional hardware. The #6 size (commonly used in fuel lines and brake circuits) fits standard SAE tubing and delivers repeatable, professional-grade sealing when installed with proper torque specifications. RUSSELL's manufacturing precision ensures consistent thread geometry and sealing surfaces, critical for systems operating at 50–1500+ PSI depending on your application. The two-pack format allows you to complete a full line upgrade or have spares for future projects.

These nuts are ideal for fuel injection conversions, turbo cooling line installations, custom brake line builds, and any hydraulic system modification. Installation requires a properly flared tube (SAE 37-degree flare standard) and a wrench-size that matches the nut hex; over-tightening causes thread stripping or flare damage, while under-tightening invites weeping leaks. Technicians rebuilding carbureted engines with new fuel rails, upgrading drum to disc brakes, or installing lines in tight engine bays appreciate the compact footprint and zero-leak performance of RUSSELL tube nuts. Keep extras on hand—they're inexpensive insurance against mid-project delays.