Inverted Flare Nut 10pk 1/2-20 for 5/16 Line

The Inverted Flare Nut 10pk 1/2-20 for 5/16 Line from ALLSTAR PERFORMANCE is a critical brake system component designed for high-performance automotive applications where precision hydraulic connections are non-negotiable. Whether you're building a custom hot rod, upgrading a track car's braking system, or restoring a classic with modern safety standards, these inverted flare nuts ensure leak-free, vibration-resistant brake line connections. Mechanics and fabricators rely on quality inverted flare fittings to maintain system integrity under extreme pressure and repeated thermal cycling.

This 10-pack of inverted flare nuts features a 1/2-20 thread pitch designed to accommodate 5/16-inch brake lines—the standard diameter for most dual-circuit brake systems in performance vehicles. Inverted flare design creates a metal-to-metal seal that's far superior to compression-style fittings; the flared end of the line seats directly into the inverted cone shape of the nut, distributing clamp load evenly and preventing galling or stripping. The 1/2-20 thread specification ensures compatibility with standard brake proportioning valves, master cylinders, and proportioning block ports found in professional-grade brake kits. ALLSTAR's manufacturing tolerances guarantee consistent fit and reliable sealing across the entire pack.

Technicians and fabricators working on hydraulic brake system upgrades, DOT-compliant street rod builds, or race car suspension overhauls depend on inverted flare nuts to eliminate weeping connections that compromise safety and performance. The 10-pack quantity makes this an economical choice for full system rebuilds or shops maintaining multiple vehicles. Installation requires only a 1/2-inch wrench and a properly flared 5/16-inch brake line; hand-tighten first, then snug with a wrench to avoid over-torquing. Compatible with all standard inverted-flare brake systems and universally suited for custom brake line routing in engine bays or chassis fabrication.