3AN Aluminum Tube Nut 3/16in Hard Line 6pcs

The 3AN Aluminum Tube Nut 3/16in Hard Line (6pcs) from REDHORSE PERFORMANCE is a precision hydraulic and fuel line fitting component designed for high-performance engine builds, custom fuel systems, and competition-level vehicle modifications. These tube nuts are essential for any serious automotive enthusiast or professional mechanic working with AN (Army-Navy) standard hard line assemblies, where secure, leak-free connections are non-negotiable. Whether you're building a fuel-injected stroker, installing a custom cooling loop, or upgrading to a braided fuel line system, this 6-piece set provides the quality fittings required for reliability under load.

Manufactured from lightweight aluminum alloy, these tube nuts feature a 3/16-inch hard line compatibility, making them ideal for smaller-displacement fuel systems, brake lines, and vacuum applications commonly found in engine bay modifications. The 3AN size designation refers to the JIC (Joint Industry Council) standard thread pattern, ensuring compatibility with corresponding AN fittings and adapters throughout the hydraulic industry. Aluminum construction reduces overall system weight compared to steel alternatives, a critical advantage in weight-sensitive performance and racing applications. The precision-machined design ensures consistent torque values and eliminates the galling issues that sometimes plague lower-quality fasteners.

Professional fabricators, drag racing teams, and custom car builders rely on REDHORSE PERFORMANCE fittings because they resist corrosion and maintain integrity under thermal cycling and vibration. The 6-piece quantity makes this set practical for a complete fuel system refresh, brake system upgrade, or as spares for ongoing maintenance and future builds. Installation requires standard AN wrench sizes and careful torque application to avoid over-tightening the aluminum body. These tube nuts are compatible with all standard 3AN male JIC threads and work seamlessly with hard aluminum tubing, braided lines, and conventional steel brake lines.