1/2-20 12pt. Nut (2pk)

The ARP 1/2-20 12pt. nut in this 2-pack is designed for serious engine builders, performance mechanics, and motorsports enthusiasts who require reliable fasteners for high-performance applications. These premium fasteners are essential for critical engine assemblies, transmission casings, and suspension components where load retention and vibration isolation are crucial.

Manufactured from aerospace-grade alloy steel, these nuts feature shot-peened surfaces that enhance their durability against thermal cycling and prolonged vibration exposure. The 12-point design offers superior contact geometry compared to traditional hex nuts, allowing for more even distribution of clamping loads and reducing the risk of galling, especially when used with aluminum heads or composite gasket materials.

Ideal for mechanics involved in engine assembly and drivetrain restoration, this 2-pack of ARP nuts ensures consistent preload characteristics and predictable torque-angle relationships, which are vital for achieving repeatable assembly specifications. Whether you're building a turbocharged engine or working on a performance vehicle, these nuts provide the reliability needed for high-stakes applications.