Hex Head Bolt 3/4-16 x 3 Grade 5

The Hex Head Bolt 3/4-16 x 3 Grade 5 from ALLSTAR PERFORMANCE is a precision fastener engineered for serious automotive builders and mechanics who demand reliability under high stress. Whether you're assembling engine blocks, securing suspension components, or fastening drivetrain hardware, this bolt delivers the tensile strength and consistency required in professional-grade engine builds and vehicle modifications. Grade 5 bolts are the industry standard for performance applications where safety and structural integrity cannot be compromised.

This hex head bolt features a 3/4-inch diameter with 16 threads per inch (3/4-16) and a 3-inch length, providing substantial clamping force and pull-down capacity across large mating surfaces. Grade 5 classification guarantees a minimum tensile strength of 120,000 PSI, making it suitable for high-vibration engine compartments, turbocharged platforms, and forced-induction installations where bolt relaxation and fatigue failure are critical concerns. The hex head design allows for easy installation and removal using standard wrenches or sockets, while the coarse 16 TPI thread pitch ensures faster assembly without sacrificing holding power or resistance to vibration-induced loosening.

Mechanics and engine builders rely on Grade 5 fasteners like this 3/4-16 x 3 bolt for critical applications including cylinder head bolts, intake manifold fastening, bell housing assembly, and frame-to-suspension connections in both street and race vehicles. This bolt is compatible with any application calling for 3/4-16 fasteners and is particularly valuable in rebuild kits, engine swaps, and performance modifications where OEM bolt replacement or upgraded fastening is essential. At 0.49 lbs per bolt, bulk ordering ensures you have sufficient inventory for complete engine assembly or frame-up restorations.