Timco Bi-Metal Hex Head Self-Drilling Screws 5.5x70mm (100pk)

The Timco Bi-Metal Hex Head Self-Drilling Screws provide a high-performance fastening solution for light section steel and roofing sheet applications. These screws eliminate the need for pre-drilling, saving valuable time and effort during installation.

Constructed with a hardened carbon steel drill tip fused to an A2-304 austenitic stainless steel body, these screws offer excellent durability and corrosion resistance, making them ideal for exterior applications. The bi-metal construction combines the strength of carbon steel with the rust-resistant properties of stainless steel.

Key Features

• Self-drilling design – No pre-drilling required, suitable for steel up to 5.0mm thick
• High corrosion resistance – A2-304 stainless steel body for exterior use
• Hex head with fixed washer – Provides a secure grip for power tools (8mm socket size)
• Strong bi-metal construction – Hardened carbon steel tip for efficient drilling

These screws are perfect for fastening roofing sheets to light steel sections, ensuring a strong and weather-resistant connection. With their durable build and efficient threading (57mm effective thread length), they provide long-lasting performance in demanding environments.