High Clamping Force Meets Heavy-Duty Corrosion Protection

The SPAX 6mm Washer Head Wood Screw with Delta Seal coating is purpose-built for structural timber applications that demand maximum holding power and enhanced weather resistance. With its large washer-style head and advanced surface coating, this screw is perfect for heavy-duty outdoor construction, from pergolas and carports to landscaping and subfloor framing.

Key Features:

• Large Washer Head

  Provides a broad bearing surface to spread load and prevent pull-through, making it ideal for fixing brackets, structural connections, and timber joints under tension.

• Delta Seal Corrosion Protection

  Offers outstanding resistance to rust and environmental wear — even in outdoor, semi-exposed conditions. The Delta Seal coating is free from chromium(VI) and provides long-term durability without compromising strength or safety.

• SPAX 4CUT Point

  The patented 4CUT tip reduces splitting and eliminates the need for pre-drilling in most timber types, including hardwoods and treated pine.

• T-STAR plus Drive

  Ensures secure bit engagement and stable driving with minimal cam-out, making installation faster and smoother on the job site.

• Partial Thread Design

  Allows for strong clamping between components, perfect for pulling two pieces of timber tightly together.

Ideal For:

✓ Pergolas, verandahs & carports
✓ Landscaping structures
✓ Timber framing & bracing
✓ General outdoor timber joinery

Why Choose SPAX Washer Head Screws?

✔ Massive holding power
✔ Clean, flush finishes with no need for washers
✔ Superior corrosion protection with Delta Seal
✔ Fast, frustration-free driving with reduced splitting