5/16"-24 x 3" Grade 8 Yellow Zinc Finish Hex Cap Screw

Engineered for high-stress applications and critical structural assemblies, the 5/16"-24 x 3" Grade 8 Hex Cap Screw (SKU: 18805) offers the ultimate combination of strength and reliability. Manufactured from high-strength alloy steel, these fasteners are quenched and tempered to achieve a minimum tensile strength of 150,000 PSI. This makes them significantly stronger than standard Grade 5 bolts, providing the necessary security for heavy machinery, automotive suspension systems, and industrial equipment where failure is not an option. This hex cap screw features a fine thread pitch (24 TPI), allowing for precise adjustments and superior vibration resistance compared to coarse-threaded alternatives. The 3-inch length provides ample reach for thick assemblies, while the hex head ensures a secure grip for high-torque tightening with standard wrenches or sockets. To ensure long-lasting performance in demanding environments, each bolt is finished with a yellow zinc plating. This specialized coating serves two purposes: it provides an extra layer of corrosion and rust resistance for outdoor or industrial exposure, and the distinct yellow iridescent hue allows for easy visual identification as a Grade 8 fastener during inspections. Whether you are performing fleet maintenance or structural fabrication, these Grade 8 bolts deliver the professional-grade durability required for your most demanding projects.