7/8"-9 x 3‑1/2" Socket Head Cap Screw, Alloy Steel, Thermal Black Oxide (USA)

This USA‑made 7/8"-9 x 3‑1/2" socket head cap screw is manufactured from premium high‑strength alloy steel to deliver exceptional fastening performance in heavy machinery, structural assemblies, equipment fabrication, and demanding industrial environments. 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 robust hex socket drive for secure torque transfer and a tight, vibration‑resistant fit, this extra‑long fastener is ideal for high‑load installations requiring superior strength, stability, and precise alignment. Its American‑made construction ensures clean, consistent threading, outstanding durability, and reliable long‑term performance even under extreme operating conditions.