Timco Bi-Metal Wing-Tip Screws for Timber to Light Steel – 5.5mm x 85mm – Countersunk – Self-Drilling – Box of 100

85mm bi metal wing tip screws for timber to light steel fix timber directly into steel sections up to 5mm thick. They provide a strong and reliable fixing, so you do not need to pre-drill.

The wing-tip design clears the timber as the screw drives through. As a result, the screw rotates freely and reaches full drilling speed without the thread binding in the wood.

When the screw reaches the steel, the wings break off. The self-drilling point then cuts into the metal, and the thread forms a secure fixing.

The partially threaded design pulls the timber tightly against the steel. Therefore, it improves clamping and creates a firm connection between materials.

The bi metal construction combines a hardened carbon steel drill tip with an A2 stainless steel body. This provides strong drilling performance along with high corrosion resistance.

They feature a countersunk head with ribs. This allows the screw to sit flush into the timber and gives a clean finish.

Key Features

• Designed for fixing timber to light steel up to 5mm thick
• Bi-metal construction for high corrosion resistance
• Wing-tip prevents thread binding in timber
• Self-drilling point removes the need for pre-drilling
• Partially threaded for improved clamping performance
• Countersunk head provides a flush finish

85mm bi metal wing tip screws for timber to light steel are ideal for construction, cladding, and framing work. They are commonly used in external or exposed environments where a strong and durable fixing is required.