Hex Head Bolt 1/2-13 x 4-1/2 Grade 5

The Hex Head Bolt 1/2-13 x 4-1/2 Grade 5 by ALLSTAR PERFORMANCE is an essential fastener for engine builds, chassis assembly, and high-vibration automotive applications. This bolt is designed for use in performance engines, custom suspension components, and critical drivetrain connections, providing the tensile strength and reliability needed in demanding environments.

Featuring a 1/2-inch diameter and 13 threads per inch (TPI), this 4.5-inch long bolt offers excellent holding power for large-diameter hole patterns commonly found in engine blocks, bell housings, and transmission cases. Grade 5 bolts are recognized for their minimum tensile strength of 120,000 PSI, making them suitable for applications that involve thermal cycling and mechanical stress. The hex head design ensures a superior grip for socket and wrench applications, reducing the risk of rounding and ensuring consistent torque delivery during installation.

Mechanics and engine builders trust ALLSTAR PERFORMANCE fasteners for competition engines, street performance vehicles, and restoration projects where quality is paramount. This bolt is ideal for securing main caps, bell housing flanges, intake manifolds, and other critical assemblies that experience high stress and vibration.