5/8"-11 x 1‑1/4" Socket Head Cap Screw, Alloy Steel, Thermal Black Oxide (USA)

This USA‑made 5/8"-11 x 1‑1/4" socket head cap screw is manufactured from high‑strength alloy steel to deliver dependable fastening performance in heavy machinery, structural assemblies, tooling, and demanding industrial applications. The thermal black oxide finish enhances corrosion resistance, improves lubricity, and provides a smooth, uniform, low‑glare appearance while maintaining precise dimensional tolerances.Featuring a hex socket drive for secure torque transfer and a strong, vibration‑resistant fit, this mid‑length fastener is ideal for high‑load installations requiring exceptional strength, stability, and precise alignment. Its American‑made construction ensures clean, consistent threading, excellent durability, and long‑lasting performance in harsh operating environments.