Hex Head Bolt 3/4-10 x 3 Grade 5

The Hex Head Bolt 3/4-10 x 3 Grade 5 from ALLSTAR PERFORMANCE is a critical fastening component engineered for high-stress automotive and mechanical applications where strength and reliability cannot be compromised. Whether you're assembling an engine block, securing suspension components, or fastening transmission bellhousings, this Grade 5 hex head bolt delivers the holding power needed in demanding engine bay environments. Mechanics and fabricators trust Grade 5 fasteners for applications requiring superior tensile strength compared to standard commercial-grade bolts.

Grade 5 bolts are hardened and tempered to withstand 120,000 PSI minimum tensile strength, making them ideal for vibration-prone and high-temperature applications found in performance engines and modified vehicles. The 3/4-inch diameter with 10 threads per inch (3/4-10) provides optimal clamping force distribution, while the 3-inch length accommodates multi-component assemblies typical in engine rebuilds and drivetrain modifications. The hex head design enables efficient installation and removal using standard metric or SAE wrenches, and the Grade 5 material resists fatigue failure under continuous cyclic loading—a critical advantage in turbocharged, supercharged, or high-RPM applications.

This fastener is essential for engine builders, transmission specialists, and DIY enthusiasts performing serious mechanical work on street rods, race engines, and custom vehicle builds. The 0.47 lb weight reflects its substantial construction, ensuring it won't shear or strip under the loads common in performance modifications. Grade 5 bolts are particularly recommended for head gasket applications, intake manifold mounting, and any assembly requiring consistent preload retention after thermal cycling—making this ALLSTAR PERFORMANCE hex head bolt an indispensable component in any serious mechanic's fastener inventory.