Single Head Stud - 7/16 x 5

The Single Head Stud – 7/16 x 5 from ARP is a precision fastener engineered for high-performance engine builds, cylinder head assembly, and critical clamping applications where reliability cannot be compromised. Whether you're rebuilding a naturally aspirated engine, turbocharged platform, or supercharged system, quality studs replace factory bolts to ensure consistent clamp load, repeatability across rebuild cycles, and superior vibration resistance. This fastener is essential for any serious engine builder or tuner who demands OEM-equivalent or better fastening integrity under sustained load and thermal cycling.

ARP studs are manufactured from premium-grade alloy steel and heat-treated to precise specifications to deliver uniform tensile strength and fatigue resistance. The 7/16-inch diameter and 5-inch overall length configuration accommodates standard cylinder head bolt hole patterns across a wide range of domestic and import platforms. Unlike conventional bolts, studs allow you to achieve perfect perpendicular loading, eliminate thread galling during installation, and maintain accurate fastener preload—critical variables that prevent head gasket failure, reduce leak paths, and improve sealing under boost and detonation events. The one-piece design eliminates the stress concentration point where a bolt shank meets threads, distributing stress more evenly and extending fastener life in aggressive tuning scenarios.

ARP Single Head Studs are ideal for engine rebuild shops, performance enthusiasts, and race teams who prioritize durability and repeatability over cost-cutting fasteners. Installation requires studs to be threaded into the engine block, then cylinder heads are lowered onto the studs and secured with nuts and washers—a process that ensures consistent clamping geometry and permits precise torque application. Verify compatibility with your specific engine platform and cylinder head design before purchase, as stud length and thread pitch must align with existing bolt holes. For maximum reliability, pair these studs with ARP-approved assembly lubricant and torque wrench verification to achieve manufacturer-specified fastener preload.