Tube Nuts -3 4pk

The Tube Nuts -3 4pk from ALLSTAR PERFORMANCE (SKU ALL 50300) is an essential fastening component designed for hydraulic and pneumatic systems requiring reliable tube connections. These -3 AN (3/16 inch) tube nuts are purpose-built for professionals and enthusiasts who demand secure, leak-free fittings in high-pressure applications. Whether you're assembling brake lines, fuel delivery systems, or custom hydraulic builds, this four-piece set provides the precision fasteners needed to maintain system integrity under demanding conditions.

Manufactured from steel and finished with a zinc oxide coating, these tube nuts offer corrosion resistance and superior durability in automotive and industrial environments. The zinc oxide treatment protects against oxidation while maintaining a secure grip on 3/16 inch tubing, ensuring connections remain tight through vibration and thermal cycling. The -3 AN specification indicates compatibility with standard -3 AN fittings, a universal size trusted across racing, restoration, and custom fabrication communities. Each nut in this four-pack meets OEM standards for thread pitch and engagement depth, eliminating the risk of improper sealing that undersized or mismatched fasteners can cause.

Mechanics, fabricators, and performance builders rely on ALLSTAR PERFORMANCE tube nuts for hot rod construction, brake system repairs, and custom fuel system installation. The four-nut configuration ensures you have spares for redundancy or multi-line projects without additional orders. Installation is straightforward—hand-tighten initially, then use a wrench to achieve proper engagement without over-torquing, which can damage the tube or fitting. Compatible with any tubing assembly using -3 AN male connectors, these nuts integrate seamlessly into existing systems or new builds requiring proven, OEM-spec fastening solutions.