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

The ALLSTAR PERFORMANCE Hex Head Bolt 3/4-10 x 4 Grade 5 (SKU ALL 16342) is a precision fastener engineered for demanding mechanical assembly and structural applications. This 3/4-inch diameter, 10 threads-per-inch Grade 5 bolt delivers the tensile strength and reliability required in high-stress environments where component failure is not an option.

Specification breakdown: the 4-inch length accommodates multi-layer assemblies while the 1-1/8 inch hex head provides optimal wrench engagement and torque transfer without slippage. Grade 5 classification means this fastener meets SAE J429 standards with a minimum tensile strength of 120,000 PSI—a critical requirement for load-bearing applications in automotive, aerospace, and industrial equipment. The zinc oxide plating provides corrosion resistance suitable for indoor and protected outdoor storage, extending service life across seasonal conditions. Steel construction ensures dimensional stability and consistent performance across temperature cycling.

Technicians and mechanics working on performance automotive builds, engine rebuilds, frame repairs, and machinery assembly rely on Grade 5 fasteners where standard hardware introduces unacceptable risk. The 3/4-10 thread pitch balances thread count for vibration resistance with sufficient engagement depth for repeated removal and reinstallation during maintenance cycles. Individual bolt purchase allows for selective replacement of compromised fasteners without bulk procurement waste—essential for field repairs and precision assembly work where component integrity is audited.

ALLSTAR PERFORMANCE positioning in the performance automotive and industrial sectors reflects decades of OEM and aftermarket acceptance. This fastener represents the specification standard across professional shops and demanding DIY builds where fastener selection directly impacts safety and reliability outcomes.