Hex Head Bolt 5/16-18 x 1-1/4 Grade 5 10pk

The Hex Head Bolt 5/16-18 x 1-1/4 Grade 5 10pk from Allstar Performance is a reliable fastener ideal for engine builds, transmission work, and suspension assemblies where medium-strength retention is essential. This 10-pack is perfect for both professional mechanics and dedicated enthusiasts who are building or maintaining performance vehicles.

Grade 5 bolts are known for their minimum tensile strength of 120,000 PSI, providing a balance of load capacity and cost-effectiveness. The 5/16-inch diameter with 18 threads-per-inch (TPI) threading ensures a secure grip while minimizing the risk of stripping in critical engine and chassis applications. The 1-1/4-inch length is suitable for components with moderate thickness, commonly found in various automotive applications.

Professional mechanics and serious hobbyists appreciate the hex head design of these bolts, which allows for excellent wrench engagement and visibility during installation and future service work. This design helps to prevent the frustration of stripped or damaged fasteners that could compromise engine integrity, making these bolts a practical choice for a variety of projects.