With Spax chipboard screws, you create strong and clean timber joints in outdoor areas and damp spaces. The weather-resistant A2 stainless steel protects your assemblies against rust and corrosion stains. Driving is fast and controlled thanks to the t-star plus T20 recess, which prevents bit slip and transfers torque efficiently. The countersunk multi head sinks smoothly and flush into the wood surface without splitting, while the full thread provides robust anchoring along the entire 25 mm length. This allows you to complete every fastening job quickly, neatly, and with long-lasting holding power.