14G Type 17 Wood Screws – Class 4 Coating (Coastal & High Corrosion)

Key Features

• AS 3566.2 Class 4 corrosion resistance – suited to severe environments
• Hex washer head – high clamping force and efficient installation
• Type 17 point – fast penetration with reduced timber splitting
• 14G gauge – increased strength for structural timber fixing
• Wide length range – suits a variety of applications
• Bulk packaging – automatic volume discounts applied

Where to Use Class 4 Wood Screws

Class 4 screws are recommended for:

• Coastal decking and boardwalks
• External timber structures exposed to salt air
• Pergolas and fencing in marine environments
• High humidity or industrial areas

Environmental suitability:

• Coastal zones
• Marine exposure
• High-corrosion environments

Technical Specifications

What is Class 4 Coating?

Class 4 under AS 3566.2 represents a higher level of corrosion resistance, intended for severe exposure conditions such as coastal or high humidity environments. These coatings are typically achieved using enhanced zinc-based or alloy systems designed to meet the durability requirements of the standard.

Class 3 vs Class 4 – Which Should You Choose?

When should I use Class 4 screws?

Use Class 4 screws in coastal or high-corrosion environments where standard coatings may not provide sufficient durability.

Can I use Class 4 screws inland?

Yes – they can be used in any environment, though typically specified where higher corrosion resistance is required.

Do bulk orders reduce cost?

Yes – automatic discounts apply as quantities increase.