Protective Coatings

Protective Coatings — Extending the Life of Every Fastener

The Protective Coatings guide from Allfast Solutions NZ explains how different finishes protect fasteners from corrosion, wear, and weathering. Every environment is unique, and choosing the right coating helps your bolts, screws, and nuts last longer — while maintaining performance and appearance.

Fasteners are exposed to moisture, heat, and chemicals every day. Without protection, metal surfaces can rust or weaken over time. That’s why protective coatings are essential in construction, marine, and industrial settings. This guide makes it easy to understand the options available and how each one performs under different conditions.

Our Protective Coatings page covers:

• Zinc plating for general indoor protection

• Hot-dip galvanising for heavy-duty outdoor use

• Black oxide for mild corrosion resistance and low glare

• Mechanical galvanising for uniform coverage

• Stainless steel coatings and passivation treatments

• Powder and organic finishes for specialised applications

Moreover, you’ll find simple explanations of how protective coatings are applied and how they interact with different base materials. The comparison tables show relative protection levels, making it easier to choose the right option for your environment. In addition, the guide offers advice on pairing coatings with compatible fastener grades to prevent galvanic corrosion.

At Allfast Solutions NZ we understand that durability starts with preparation. Therefore, we supply fasteners that meet or exceed New Zealand and international coating standards. Each product is tested for adhesion, thickness, and corrosion resistance to ensure reliable performance on-site.

For further technical details, you can visit the Australian/New Zealand Standard for Protective Coatings (AS/NZS 2312). This standard outlines recommended coating systems for long-term corrosion protection in various environments.

In summary, this Protective Coatings guide gives you the knowledge to choose wisely, protect effectively, and extend the lifespan of every fastener you install.