What are the best fasteners to avoid corrosion in WPC outdoor seating assemblies?

When assembling WPC (Wood-Plastic Composite) outdoor seating, choosing the right fasteners is crucial to prevent corrosion and ensure long-term durability. The best options include:

1. Stainless Steel Screws: Highly resistant to rust, especially grades 304 or 316, ideal for coastal or humid environments.

2. Coated or Galvanized Fasteners: Zinc or polymer-coated screws provide extra protection against moisture and oxidation.

3. Composite-Specific Fasteners: Designed for WPC materials, these reduce splitting and offer better grip without corrosion risks.

4. Hidden Fastening Systems: Clip or track systems minimize exposure to moisture while maintaining a clean aesthetic.

Avoid plain steel or uncoated fasteners, as they can rust and stain the WPC. Proper installation and periodic maintenance further enhance longevity.