S/S 12pt. Nut - 1/4-28 (1)

The ARP S/S 12pt. Nut - 1/4-28 (ARP 400-8300) is a precision stainless steel fastener designed for high-performance engine builders, automotive mechanics, and enthusiasts who prioritize reliability under extreme conditions. This specialty nut is engineered to secure critical engine components where vibration, thermal cycling, and mechanical stress are prevalent concerns.

Constructed from premium stainless steel, this 12-point nut offers superior corrosion resistance and maintains tensile strength across wide temperature ranges, making it ideal for turbocharged, supercharged, and naturally aspirated performance engines. The 12-point design distributes load more evenly than traditional 6-point geometry, reducing stress concentration at the corners and minimizing the risk of thread stripping during installation or thermal expansion cycles.

Engine builders and mechanics rely on this fastener for assembling high-horsepower builds, restoring vintage performance engines, or performing critical repairs. The 1/4-28 thread pitch specification is compatible with common ARP stud applications in engine block fastening, intake manifold mounting, and fuel system components.