Unite wood to light beam screws
Wood to light beam screws for light section steel
Wood to light beam screws for clean timber-to-steel fastening
Our wood to light beam screws are built around the Uniwing family for fastening timber to light section steel. The winged design mills clearance in the timber before the thread grips the steel, which helps the joint seat correctly instead of locking too early during installation.
This range is for professional buyers who need to match timber thickness, steel thickness and corrosion requirement without overcomplicating the choice. On this page we explain the family logic clearly, while the catalogue below gives you the detailed size tables and range comparison.
Choose the right Uniwing option
4.8 mm Uniwing for lighter timber-to-light-beam joints
Choose our 4.8 mm Uniwing screws when the timber build-up is relatively modest and the steel sits in the lower drill-capacity band for this family. This is the right starting point when you want a clean countersunk timber finish and do not need the extra reach of the larger 5.5 mm series.
See sizes and technical details for our 4.8 mm Uniwing range on page 42 in the catalogue
5.5 mm Uniwing for thicker timber and broader range coverage
Use our 5.5 mm Uniwing screws when the timber section is thicker or the light beam/profile thickness sits higher within the standard light-beam range. Compared with the 4.8 mm series, this part of the range gives you more reach while keeping the same winged drilling principle and effective countersunk result in timber.
See sizes and technical details for our 5.5 mm Uniwing range on page 42 in the catalogue
Extended Uniwing models for thicker beam and profile sections
Choose the extended Uniwing models when the beam or profile section is substantially thicker and the lighter drill-capacity bands are no longer enough. This continuation of the range covers higher drill-capacity levels and longer screw lengths for deeper timber build-ups within the same wood to light beam family.
See the continuation sizes and tables for these Uniwing models on page 43 in the catalogue
Stainless A2 options for more exposed applications
Choose our stainless A2 Uniwing screws when the project calls for better corrosion resistance but you still want the same timber-to-steel installation logic. Stainless options are available across several size bands, which makes it easier to stay within the Uniwing family even when exposure requirements become more demanding.
See stainless Uniwing options starting on page 42 in the catalogue
Detailed wood to light beam screw data in our catalogue
The catalogue below is where you compare the full Uniwing size range, including timber thickness bands, drill-capacity ranges and stainless alternatives. It is the quickest way to move from family-level selection to the exact screw series that fits your timber-to-light-beam build-up.
If you are also comparing exposure level or substrate thickness, our guides to corrosion classes, drilling capacity and technical descriptions are useful alongside the catalogue tables.
Need help choosing the right wood to light beam screw?
We help contractors, installers and technical buyers choose the right wood to light beam screw based on timber thickness, steel thickness and corrosion requirement. That makes it easier to avoid slow installation, mismatched drill capacity and unnecessary back-and-forth on site.
If you already know your build-up, send it to us and we will help you narrow the Uniwing range quickly.
How do I choose between wood to light beam screws and wood to steel beam screws?
Choose wood to light beam screws when the timber is being fixed to the lighter beam or profile ranges covered by the Uniwing light-beam family. Move to the separate wood to steel beam family when the steel substrate is heavier and falls outside this page’s intended drill-capacity range. The key decision is always the actual steel thickness, not just the timber size.
Why do winged screws matter when fastening timber to light section steel?
The wings matter because they mill clearance in the timber before the thread fully engages the steel. That helps prevent the timber from being pulled up too early and locking the assembly before it seats properly. In practice, that gives you a cleaner timber-to-steel installation and supports a better countersunk result.
What matters most when choosing between 4.8 mm and 5.5 mm Uniwing screws?
The most important factors are timber thickness and the steel thickness band you need to drill into. The 4.8 mm series fits lighter combinations, while the 5.5 mm series covers thicker timber sections and broader drill-capacity needs. When the build-up grows or the steel gets more demanding, the 5.5 mm range is usually the better place to start.
When should I choose stainless A2 instead of the standard version?
Choose stainless A2 when the environment or specification calls for better corrosion resistance than the standard version. That decision should be made early, because you still need to match the stainless screw to the right timber thickness and drill-capacity band afterwards. It is the simplest way to keep the same Uniwing installation principle in a more exposed application.
What is the most common mistake when choosing a wood to light beam screw?
The most common mistake is choosing mainly by overall screw length and not by the full build-up. You need to match both the timber thickness and the steel drill-capacity range. If either side is wrong, installation becomes less efficient and the screw may be a poor fit for the joint even if the family itself is correct.
Can Unite help us choose the right wood to light beam screw for a specific build-up?
Yes. If you send us the timber thickness, the light beam or profile thickness and the corrosion requirement, we can narrow the range quickly. That helps you avoid choosing a screw that suits one part of the build-up but not the rest of the application.