5/16-18 x .750 Bolt T45 Torx

The JESEL 5/16-18 x .750 Bolt T45 Torx is a precision fastener engineered for high-performance engine and drivetrain applications where reliability under extreme stress is non-negotiable. Built from chromoly steel with black oxide coating, this bolt combines material strength with corrosion resistance—critical for components exposed to fuel, oil, thermal cycling, and vibration. The T45 Torx head design ensures precise torque application without cam-out, a defining advantage over conventional hex or Phillips fasteners in critical assembly work.

Specifications matter here: the 5/16-18 thread pitch delivers a fine thread profile ideal for aluminum and composite engine components where coarser threads risk stripping. The 0.75-inch length positions this fastener for applications requiring shallow penetration—cam covers, valve covers, intake manifold gasket retention, and fuel system fittings are common uses in small-block and LS-series engine builds. Chromoly material offers superior tensile strength compared to standard Grade 5 bolts, maintaining clamp load consistency across thermal extremes. Black oxide finish provides baseline corrosion protection suitable for engine bay environments.

This fastener addresses the needs of engine builders, machine shops, and serious automotive enthusiasts executing OEM-specification or competition-level engine assembly. JESEL's reputation in high-end engine components—particularly in performance and racing applications—reflects throughout their fastener line. Users who prioritize proper torque spec compliance, material consistency, and long-term reliability under load will find this bolt a straightforward choice for critical engine work where fastener failure creates unacceptable risk. Sold individually, allowing builders to source exact quantities for their specific application.