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Bi-Metal Wing-Tip Screws for Timber to Light Section Steel
Bi-metal wing-tip self-drilling screws designed for fixing timber to light section steel, offering high corrosion resistance and strong drilling performance.
Timco Bi-Metal Wing-Tip Screws for Timber to Light Steel – 4.8mm x 38mm – Countersunk – Self-Drilling – Box of 200
In stock
£55.83 ex VAT(£66.99 inc VAT)
SKU:
BMLW38
Timco Bi-Metal Wing-Tip Screws for Timber to Light Steel – 5.5mm x 65mm – Countersunk – Self-Drilling – Box of 200
In stock
£79.99 ex VAT(£95.99 inc VAT)
SKU:
BMLW65
Timco Bi-Metal Wing-Tip Screws for Timber to Light Steel – 5.5mm x 85mm – Countersunk – Self-Drilling – Box of 100
In stock
£49.41 ex VAT(£59.29 inc VAT)
SKU:
BMLW85
What are bi-metal wing-tip screws for light section steel?
Bi-metal wing-tip screws are designed for fixing timber directly to light section steel without pre-drilling. The wing-tip design clears the timber during installation, allowing the screw to drill efficiently into the steel.
Why choose bi-metal wing-tip screws?
- Designed for fixing timber to steel up to 5mm thick
- Bi-metal construction for high corrosion resistance
- Stainless steel body with hardened drill tip
- Wing-tip prevents thread binding in timber
- Countersunk head provides a flush finish
How do wing-tip screws work?
As the screw drives through timber, the wings cut a slightly larger hole. This allows the screw to rotate freely without the thread gripping too early.
When the screw reaches the steel, the wings break off. The drill point then cuts into the metal, and the thread forms a strong and secure fixing.
Where are they used?
These screws are commonly used for:
- Fixing timber battens to light gauge steel frames
- Cladding and external panel systems
- Roofing support structures
- Applications where corrosion resistance is important
Available Sizes & Typical Applications
| Size | Typical Use |
|---|---|
| 4.8 x 38mm | General timber to light steel fixing |
| 5.5 x 65mm | Fixing thicker timber sections |
| 5.5 x 85mm | Deeper penetration into timber and steel |
When should you use bi-metal wing-tip screws?
Bi-metal wing-tip screws are the best choice for external or exposed environments. They provide high corrosion resistance, making them suitable for use in urban, industrial, and higher moisture conditions.
Related Categories
- Zinc wing-tip screws for light steel: A cost-effective option for internal use.
- Exterior wing-tip screws for light steel: Suitable for outdoor applications with moderate corrosion resistance.
Frequently Asked Questions
What are bi-metal wing-tip screws used for?
They are used for fixing timber to steel where higher corrosion resistance is required.
Do wing-tip screws need a pilot hole?
No – the self-drilling point allows them to cut into both timber and steel without pre-drilling.
What is the benefit of bi-metal screws?
They combine a stainless steel body with a hardened drill tip, providing both durability and drilling performance.
Are bi-metal wing-tip screws suitable for outdoor use?
Yes – they are designed for exposed environments and offer improved corrosion resistance compared to standard zinc screws.
