5/16"-18 Hex Jam Nut, Grade 8, Coarse Thread, Zinc Yellow Cr+6 Finish

The 5/16"-18 hex jam nut is manufactured from high‑strength Grade 8 steel for secure locking in high‑load and high‑vibration applications. Its thin jam‑nut profile and coarse thread make it ideal for tight‑clearance assemblies, while the zinc yellow Cr+6 finish provides added corrosion resistance and easy visual identification. Suitable for automotive, industrial, and mechanical environments.