Zinc plating is one of the most widely used surface treatment processes in fastening technology. It provides basic corrosion protection and helps ensure that fasteners continue to perform their function in the long term, even under demanding environmental conditions.

What Is Zinc Plating?

Zinc plating involves coating a fastener with a thin layer of zinc. Depending on the requirements, this can be done using various processes, such as electroplating, hot-dip galvanizing, or modern systems such as zinc flake coatings.

The zinc layer protects the steel from corrosion by separating it from the corrosive environment and acting as a sacrificial anode.

Why Zinc Plating?

-Effective protection against moisture, salt, and atmospheric exposure

-A proven standard in numerous industries

-A suitable base for subsequent coatings, passivation, or sealing

Differences Between Common Zinc Plating Processes

–Electroplated zinc: uniform, thin coating with good dimensional accuracy; suitable for precision components and applications where appearance matters

–Hot-dip galvanized: significantly thicker and more robust zinc coating; high level of corrosion protection, but with reduced dimensional accuracy and less aesthetic appeal

–Zinc flake coatings and comparable systems: high-performance corrosion protection, often without the risk of hydrogen embrittlement

Important Note

Zinc plating is mainly used for corrosion protection, not decorative purposes. Combining zinc plating with passivation or additional sealing further enhances its rust protection.