Best current price£6.76from The Range
Shopping.co.uk recommended and popular offers
The Range£6.76Visit shop Unifix Coach Screws Hexagon Head Din 571 Bright Zinc Plated Ce - M6 X 25 (Box Of 200) - White
Visit shop28 offers from £6.76 - £14.09
View price history by clicking the chart icon.
1 offer from £7.58
View price history by clicking the chart icon.
The Unifix Coach Screws Hexagon Head DIN 571 are heavy-duty fasteners specifically engineered for structural wood applications where a secure, long-lasting grip is required. These M8 x 45 screws are ideal for professional contractors and DIY enthusiasts working on timber frames or heavy construction projects, offering excellent corrosion resistance and reliable durability. However, users should note that because these are designed for wood, they require a pilot hole to prevent timber splitting and are not suitable for direct metal-to-metal bolting.
| Colour | Silver |
|---|---|
| Model Part Number | DIN 571 |
| Brand | Unifix |
These are designed for wood-to-wood fastening. If using them in masonry, you must use a heavy-duty nylon wall plug of the appropriate diameter.
Yes, the finish is designed for corrosion resistance, making them suitable for garden structures and exterior timber projects.
A socket set, a wrench, or an impact driver with a matching hex socket bit is recommended.
It is ideal for thinner timber sections. For thicker beams or posts, you may need longer screws from the Unifix DIN 571 range.
While they are robust, it is generally recommended to use new screws for structural joints to ensure the thread remains sharp and the head is not damaged.
Ensure the pilot hole is correctly sized; if the hole is too small, the friction becomes excessive.
Verify that your socket size matches the hexagon head perfectly and reduce the speed of the impact driver.
Ensure you are keeping a sufficient distance from the end of the timber board and always pre-drill.
For optimal results, always measure the thickness of the timbers being joined and drill a pilot hole approximately 70% of the screw shank diameter. This prevents the wood from cracking upon entry. While the finish is corrosion-resistant, it is good practice to keep the screws in their original packaging until needed to prevent moisture build-up. If installing in treated timber, ensure your drill bits are sharp to maintain a clean hole and prevent unnecessary expansion of the timber fibers.
