9/16 Stud - 5.250 Long Broached

The 9/16 Stud - 5.250 Long Broached from ARP is a premium fastening component designed for high-performance engine builds where reliability and precision are crucial. This stud is ideal for applications such as assembling stroker engines, upgrading turbo applications, or reinforcing critical fastening points in modified powerplants. Engine builders and mechanics trust this stud for its structural integrity and performance.

Constructed from ARP's proprietary 8740 alloy steel and subjected to a rigorous heat-treatment process, this stud offers tensile strength and ductility that surpass standard Grade 8 bolts. The broached design features a precision-ground surface with a controlled underhead radius, which enhances the finish and reduces stress concentrations that can lead to fatigue failure. This makes it particularly suitable for high-stress environments such as forced-induction and high-RPM builds.

Each stud is sold individually, allowing builders to replace worn hardware as needed or to source the exact quantity for custom applications. Whether you are a professional engine builder or a serious automotive enthusiast, these studs are essential for ensuring reliable cylinder head fastening in large-displacement engines and heavy-duty assemblies.