All Metal Lock Nuts

These nuts excel in high-temperature applications where polymer-based locking mechanisms may melt or degrade. Their all-metal construction allows them to retain strength, shape, and locking ability under thermal cycling and continuous exposure to elevated temperatures. They're frequently used in turbines, engines, furnaces, and other high-heat environments where fastening security is essential.

Yes, to enhance corrosion resistance and longevity, they can be coated with zinc plating, hot-dip galvanizing, phosphate, or black oxide finishes. The right coating depends on the environment: galvanized nuts are ideal for outdoor or marine use, while phosphate is preferred for high-friction or anti-galling properties. These treatments increase lifespan and performance in harsh or reactive environments.

These nuts are typically made from carbon steel, alloy steel, and stainless steel. Carbon steel offers high tensile strength, making it suitable for general-purpose heavy-duty applications. Alloy steel adds enhanced mechanical properties and durability, while stainless steel provides excellent corrosion resistance in marine, chemical, or outdoor environments. The material choice depends on the operating conditions and specific industry needs.