5/8"-11 x 3" Socket Head Cap Screw, Alloy Steel, Thermal Black Oxide (USA)

This USA‑made 5/8"-11 x 3" socket head cap screw is manufactured from high‑strength alloy steel to deliver exceptional fastening performance in heavy machinery, industrial equipment, structural assemblies, and demanding fabrication applications. The thermal black oxide finish enhances corrosion resistance, improves lubricity, and provides a uniform, low‑glare appearance while maintaining precise dimensional tolerances.Featuring a hex socket drive for secure torque transfer and a stable, vibration‑resistant fit, this extended‑length fastener is ideal for high‑load installations requiring superior strength, accuracy, and long‑term reliability. Its American‑made construction ensures clean, consistent threading, excellent durability, and dependable performance even in harsh operating conditions.