Timco Bi-Metal Heavy Section Screws, Self-Drilling, 5.5x55mm (100pc)

The Timco Bi-Metal Heavy Section Screws provide exceptional fastening performance for attaching metal to heavy section steel (up to 12mm thick) without requiring pre-drilled holes. Their self-drilling tip ensures quick and efficient installation, saving time and effort.

These screws feature a hardened carbon steel drill tip fused onto an A2-304 austenitic stainless steel body, offering excellent corrosion resistance and durability. The hex head design ensures secure fastening with minimal cam-out, while the fixed washer provides consistent clamping force and surface protection.

Key Features:

• Bi-Metal Construction – Combines a carbon steel drill tip with a stainless steel body for maximum performance
• Self-Drilling No.5 Point – Eliminates the need for pre-drilling
• Hex Head with 8mm Socket Size – Easy to drive with power tools
• Fixed Washer (11mm Diameter) – Ensures proper load distribution
• Effective Thread Length (34mm) – Provides strong holding power

Ideal for exterior applications where corrosion resistance and high-strength fastening are essential, these M5.5 x 55mm screws are supplied in a pack of 100, making them perfect for professional and heavy-duty use.