1/4"-20 x 3‑1/2" Socket Head Cap Screw, Full Thread, Alloy Steel, Thermal Black Oxide (USA)

This USA‑made 1/4"-20 x 3‑1/2" full‑thread socket head cap screw is manufactured from high‑strength alloy steel to deliver dependable fastening performance in machinery, tooling, equipment assembly, and precision industrial systems. The thermal black oxide finish enhances corrosion resistance, improves lubricity, and provides a uniform, low‑glare surface while maintaining exact dimensional tolerances.Designed with a hex socket drive for secure torque transfer and a vibration‑resistant fit, this longer‑length fastener is ideal for deeper assemblies and applications requiring extended reach without sacrificing strength. Its American‑made construction ensures consistent threading, excellent durability, and reliable performance in demanding environments.