Hex Head Bolts 5/8-11 x 2 Grade 5 5pk

The Hex Head Bolts 5/8-11 x 2 Grade 5 5pk by ALLSTAR PERFORMANCE are precision fasteners engineered for serious automotive and mechanical applications where strength and reliability are non-negotiable. Whether you're assembling an engine block, securing suspension components, or fastening critical drivetrain hardware, these bolts deliver the holding power required in high-vibration environments. Grade 5 fasteners are the industry standard for performance vehicle builds where inferior fasteners could lead to catastrophic failure.

Each bolt in this five-pack measures 5/8-inch diameter with an 11 threads-per-inch pitch and 2-inch length, conforming to SAE J429 Grade 5 specifications that provide tensile strength of 120,000 PSI minimum. The 5/8-11 thread specification is commonly found in engine bay applications, suspension mounts, and transmission housings on both street and track vehicles. Grade 5 bolts feature a distinctive three radial lines stamped on the head and are hardened to withstand extreme clamping forces, vibration cycles, and thermal cycling without loosening or stripping. The hex head design permits easy installation and removal using standard 15/16-inch wrenches or sockets, essential for quick assembly and maintenance work.

Mechanics and fabricators rely on ALLSTAR PERFORMANCE hex head bolts for engine builds, transmission bolting, suspension geometry corrections, and frame reinforcement projects. The five-bolt quantity in this pack suits small repair jobs, custom modifications, or replacement of damaged fasteners in critical assemblies. These bolts are compatible with any application calling for 5/8-11 x 2 fasteners and work seamlessly with standard washers and lock washers for added security. Always torque to manufacturer specifications for your specific application, typically in the 90–110 foot-pound range depending on the assembly being secured.