1/2-20 12pt. Nuts (10)

The ARP 1/2-20 12pt. Nuts (10) are precision-engineered fasteners designed for high-performance engine builds and critical fastening applications where reliability and consistency are non-negotiable. These chromoly nuts provide superior strength compared to standard steel alternatives, making them the preferred choice for racing engines, stroker builds, and any application requiring heavy-duty thread engagement. Whether you're assembling a competition engine or upgrading an existing build, this 10-pack offers the quality assurance that professional builders and serious enthusiasts demand.

Constructed from chromoly steel and finished with a black oxide coating, these 1/2-20 nuts feature a 12-point head design that maximizes contact surface area and reduces stress concentration at the bearing interface. The 1/2-20 thread specification denotes a 1/2-inch diameter with 20 threads per inch, ensuring precise pitch engagement with corresponding ARP studs and bolts. The black oxide finish provides corrosion resistance while maintaining a professional appearance, and the 12-point configuration allows for multiple seating angles, improving installation accuracy and reducing the risk of thread galling during assembly.

This set of 10 nuts is ideal for engine builders, performance technicians, and motorsports enthusiasts who rely on ARP fastening solutions for head studs, block studs, and critical clamping applications. The chromoly construction delivers strength-to-weight advantages crucial in high-RPM and high-boost environments where standard fasteners may fail. Compatible with all 1/2-20 ARP studs and bolts, these nuts integrate seamlessly into complete fastening systems designed for maximum clamping force and reliability under extreme conditions.