Timco 5.5x50mm Self-Drilling Timber to Metal Screws, Zinc, 200-Pack

The Timco 5.5x50mm Self-Drilling Timber to Metal Screws are engineered for attaching wood to light-section steel (up to 5mm thickness securely). These screws feature a coarse self-tapping thread with wing-tip design, which effectively reams out timber to maximise RPM efficiency without burning out. Upon contact with metal, the wings break off, allowing the screw to self-tap into the metal for a secure, hassle-free installation.

These screws are countersunk with ribs for a flush finish and Phillips recess for easy driving. Made from case and core hardened carbon steel, they offer durability and strength, complemented by a zinc finish for corrosion resistance. Ideal for applications where quick and robust fastening is required.

Features & Benefits:

• Wing-tip design for efficient timber reaming and reduced friction
• Self-drilling point (No.3) eliminates the need for pre-drilling
• Hardened carbon steel construction ensures robustness
• Zinc finish offers corrosion protection

Technical Specifications:

• Thread Diameter: 5.5mm
• Length: 50mm
• Effective Thread Length: 26mm
• Head Type: Countersunk with ribs
• Recess Type: Phillips
• Max Drilling Thickness (Metal): 5.0mm
• Timber Suitability: 19–28mm