1‑3/8"-6 Hex Jam Nut, Grade 8, Coarse Thread, Zinc Yellow Cr+6 Finish

The 1‑3/8"-6 hex jam nut is manufactured from high‑strength Grade 8 steel to deliver dependable locking performance in heavy‑duty, high‑load applications. Its thin jam‑nut profile is ideal for tight‑clearance or double‑nut assemblies, while the coarse thread allows for fast installation and strong holding power. The zinc yellow Cr+6 finish provides enhanced corrosion resistance and clear visual identification, making it well suited for industrial, automotive, and heavy‑equipment environments.