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The Range£29.86Visit shop Unifix Coach Screws Hexagon Head Din 571 Bright Zinc Plated - M6 X 50 (Box Of 600) - White
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The Unifix Coach Screws (M12 x 150mm) are robust, heavy-duty fasteners designed for professionals and DIY enthusiasts working on structural timber projects. These hexagon head screws offer exceptional holding power and reliability in wood-to-wood applications, though their large size requires a pre-drilled pilot hole to prevent timber splitting. Featuring a bright zinc plated finish, this box of 60 ensures long-lasting corrosion resistance for both indoor and outdoor construction tasks.
| Colour | Silver |
|---|---|
| Model Part Number | 1426816 |
| Brand | Unifix |
Yes, the bright zinc plated finish offers protection against corrosion, though they are best suited for sheltered outdoor applications.
Yes, due to the large M12 diameter, it is highly recommended to pre-drill a pilot hole to prevent the timber from splitting.
You should use a socket wrench or a ratchet spanner that matches the hexagon head size for these M12 screws.
This specific package contains 60 individual M12 x 150mm coach screws.
These are primarily designed for wood-to-wood structural fastening; for metal surfaces, you should use fasteners designed specifically for steel tapping.
Ensure a pilot hole has been drilled. Use a slightly larger drill bit if the wood is particularly dense.
Check that your socket tool is the correct size and fully seated on the hexagon head before applying torque.
Drill a larger pilot hole or ensure you are not installing too close to the edge of the timber beam.
For installation, ensure you have a compatible socket set or a ratchet spanner set to the appropriate size for the M12 hexagon head. Always verify the thickness of the timber being joined to ensure the 150mm length provides sufficient penetration without causing damage to the other side. While the bright zinc plating offers decent resistance, these screws are best used in sheltered or interior environments; for highly acidic or maritime conditions, consider stainless steel alternatives. Store the screws in a dry environment to maintain the finish and prevent premature oxidation of the zinc coating.
