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12 x 50 Type 17 Class 4 Screws – Plain Timber Fixing Roofing Screws
The 12 x 50 Type 17 Class 4 Screws – Plain (Unpainted) are designed for fixing metal roofing sheets, wall cladding, flashings and accessories to timber battens and timber framing. Built for Australian conditions, these heavy-duty roofing screws provide strong holding power, reliable installation and long-term corrosion resistance for residential, rural and commercial projects.
If you need dependable roofing screws for timber, these screws are a popular choice for builders, roof plumbers, tradies and DIY customers wanting a secure fixing solution for metal roofing systems.
Designed for Timber Fixing Applications
These screws feature a Type 17 point, which is specifically engineered for timber fixing. The point helps start quickly, cuts cleanly into timber and reduces the chance of splitting compared with standard screw points.
This makes them ideal for fastening roofing sheets and cladding into timber battens, purlins, pergolas, sheds and structural timber members.
Common Uses
- Corrugated roofing sheets fixed to timber
- Trimdek® roofing installed on timber battens
- Wall cladding to timber framing
- Ridge capping and flashings to timber supports
- Sheds, garages and carports
- Patios, pergolas and outdoor structures
- General repairs and replacement roofing sheets
Strong Corrosion Protection – Class 4 / B8 Coating
These 12 x 50 timber screws include a B8 Class 4 coating for enhanced corrosion resistance. This helps protect fasteners in many Australian environments and supports long service life when installed correctly.
Suitable for a wide range of projects where durability matters, especially roofing and external cladding applications.
Product Specifications
- Size: 12g x 50mm
- Diameter: 6.2mm
- Thread Count: 11 threads per inch
- Point Type: Type 17 timber point
- Finish: Plain / Unpainted
- Coating: B8 Class 4 corrosion protection
- Pack Sizes: 100, 500 or 1,000 screws
How Many Roofing Screws Do I Need?
As a general guide:
Fasteners required = Total lineal metres x 6
The exact quantity required may vary depending on sheet profile, wind rating, support spacing and project specifications. Ordering extra screws is often a smart move to avoid delays during installation.
Installation Tips
For best results:
- Use a Hex Head Socket Drill Bit
- Drive screws square to the sheet
- Tighten firmly without overdriving
- Follow roofing manufacturer fixing patterns
- Confirm suitability for your specific project conditions
Buy 12 x 50 Timber Roofing Screws Online Australia-Wide
We supply quality roofing screws online with shipping available across Australia. Whether you need a small pack for repairs or bulk quantities for a larger install, simply choose from 100, 500 or 1,000 pieces and order online.
These screws can also be added to your roofing sheet, guttering or flashing order for convenience.
Order 12 x 50 Type 17 Class 4 Screws Today
Need reliable roofing screws for timber battens? Order your 12 x 50 Type 17 Class 4 Screws – Plain today for strong fixing performance, trusted corrosion protection and fast Australia-wide delivery.
