SPAX Stainless Steel T20 T-STR Self-Sealing Screws 4.5x55mm (Box of 70)

SPAX Stainless Steel Sealing Screws

The SPAX Sealing Screw with Full Thread and Raised Countersunk Head is a specialist fastener designed for weatherproof connections in outdoor applications such as façades, exterior wood cladding, or roofing. Engineered from corrosion-resistant A2 stainless steel and fitted with a permanently elastic 15?mm sealing washer, this screw delivers a durable seal against moisture penetration without the need for additional sealing agents.

Key Features:

• Integrated Sealing Washer (15 mm): Permanently elastic disc provides a secure, watertight seal—ideal for outdoor, weather-exposed structures.

• Raised Countersunk Head: Offers a neat surface finish while accommodating the sealing disc without distorting it.

• Full Thread Design: Provides strong, continuous hold throughout the material thickness for maximum pull-out resistance.

• 4CUT Point Geometry: Reduces splitting and allows easy installation without pre-drilling (depending on timber type).

• T-STAR Plus Drive: Star-shaped T-Drive ensures better power transmission, bit retention, and less cam-out—ideal for overhead or awkward angles.

• A2 Stainless Steel Construction: Highly resistant to corrosion, making it suitable for humid or outdoor environments.

Applications:
Perfect for fixing components in timber façades, weatherboarding, carports, pergolas, and other outdoor wooden structures where watertight sealing and long-term corrosion protection are essential.

SPAX screws are a symbol of German engineering excellence, proudly manufactured in Germany since 1823. With over 200 years of expertise, SPAX continues to set the standard for professional fasteners. Their innovative "4CUT" point design allows for easy insertion without the need for pre-drilling, reducing wood splitting and increasing work efficiency. This patented feature is especially valuable for builders and traders who need reliable, time-saving solutions on-site.

Versatility is a hallmark of SPAX screws, as they perform exceptionally well across wood, metal, and plastic materials, making them ideal for a wide range of construction applications. Additionally, SPAX have developed YELLOX & WIROX environmentally friendly coatings, providing superior corrosion resistance while reducing environmental impact.

Trusted by professionals, SPAX screws offer durability, precision, and long-lasting performance in even the harshest conditions. For fasteners that combine tradition, sustainability, and modern innovation, choose SPAX—made in Germany since 1823.