Description
Nylon Lock Nut Hex UNF 5/16" Zinc Plated Pack of 10 is a self-locking hex nut with a nylon insert that grips the bolt thread to prevent loosening from vibration. The UNF (fine thread) pattern suits precision and automotive applications.
Zinc plated for basic corrosion resistance. The 5/16" UNF size suits standard imperial fine-thread fasteners. Supplied in a 10-pack. Commonly used in automotive, machinery, and equipment where vibration resistance is critical.


