Hex Head Bolt 5/8-18 x 3 Grade 5

The Hex Head Bolt 5/8-18 x 3 Grade 5 is a heavy-duty fastener engineered for mission-critical applications where structural integrity and load-bearing capacity are non-negotiable. Whether you're assembling tactical equipment, securing vehicle mounts, or conducting field maintenance on weapons platforms, this Grade 5 bolt delivers the tensile strength and reliability demanded by law enforcement and military operators. Manufactured to exacting standards, it serves as a dependable component in load-bearing assemblies where fastener failure is not an option.

Constructed from high-strength steel with a zinc oxide finish, this hex head bolt features a 5/8-inch diameter with an 18 threads-per-inch (TPI) pitch and 3-inch length—dimensions optimized for secure fastening in tactical assemblies and equipment platforms. The Grade 5 classification provides approximately 130,000 PSI tensile strength, making it suitable for high-stress connections that demand superior load capacity and resistance to shear forces. The 15/16-inch hex head allows secure engagement with standard wrenches and sockets, ensuring operator efficiency during assembly and field maintenance. Zinc oxide coating provides corrosion resistance in variable environments, extending service life in outdoor and operational conditions.

Tactical personnel, armament specialists, and equipment technicians rely on Grade 5 fasteners for mounting systems, rail installations, and structural repairs where failure tolerance is zero. This bolt is ideal for securing tactical rails, mounting brackets, and heavy equipment where vibration resistance and load retention are critical. Universal compatibility across standard SAE fastening applications makes it an essential component for field kits and maintenance arsenals. Installation with appropriate torque specifications and lock washers ensures optimal performance and prevents fastener loosening under operational conditions.