1"-8 x 4‑1/2" Socket Head Cap Screw, Alloy Steel, Thermal Black Oxide (USA)

This USA‑made 1"-8 x 4‑1/2" socket head cap screw is manufactured from premium high‑strength alloy steel to deliver exceptional fastening performance in heavy machinery, structural steel construction, equipment fabrication, and extreme‑duty 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 heavy‑duty hex socket drive for secure torque transfer and a strong, vibration‑resistant fit, this extra‑long fastener is ideal for high‑load installations requiring superior strength, precise alignment, and long‑term durability. Its American‑made construction ensures clean, consistent threading, outstanding mechanical integrity, and reliable performance under the harshest operating conditions.