Timco Metal Heavy Duty Self-Drilling Screws 5.5x80mm, Pack of 100

Designed for professional metalwork applications, these Timco Heavy Section Screws offer exceptional performance for attaching metal to heavy section steel (up to 12mm thickness) without pre-drilling. The high-quality construction ensures reliable fastening for exterior applications where durability is critical.

Key Features

• Self-drilling point (No.5) eliminates the need for pilot holes, saving time and effort
• Hex head with fixed washer provides secure, slip-resistant fastening
• Case & core hardened carbon steel construction for maximum strength
• Exterior-grade silver organic coating withstands 500+ hours of salt-spray testing for corrosion resistance

Technical Specifications

With a thread diameter of 5.5mm and total length of 80mm, these screws feature:

• 56mm effective thread length
• 12mm fixed washer diameter
• 8mm hex socket size
• Maximum drilling capacity of 12mm through steel

Ideal for construction sites, metal roofing, steel framing and other heavy-duty applications where weather resistance and structural integrity are paramount.