1/2"-13 x 3‑1/2" Socket Head Cap Screw, Alloy Steel, Thermal Black Oxide (USA)

This USA‑made 1/2"-13 x 3‑1/2" socket head cap screw is engineered from high‑strength alloy steel to provide reliable fastening for heavy machinery, tooling, equipment assembly, and demanding industrial applications. The thermal black oxide finish improves corrosion resistance, boosts lubricity, and delivers a clean, 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 extra‑long fastener is ideal for assemblies requiring extended reach without sacrificing strength, stability, or alignment accuracy. Its American‑made construction ensures clean, consistent threading, excellent durability, and dependable long‑term performance in challenging operating environments.