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The Unifix Coach Screws (M8 x 50mm) are essential heavy-duty fasteners designed for both professional builders and DIY enthusiasts who require secure, structural wood connections. Featuring a robust hexagon head for high-torque installation and a bright zinc plating for moderate corrosion resistance, these screws are ideal for diverse timber projects. While they offer exceptional holding power, they are strictly intended for wood applications and require pre-drilling to prevent timber splitting.
| Colour | White |
|---|---|
| Model Part Number | Ubhxc08 050 |
| Brand | Unifix |
This specific pack contains the screws as described; you may need to source external washers if your application requires a wider bearing surface.
No, these are strictly wood screws and are not compatible with masonry, brick, or concrete.
Yes, provided they are not in constant contact with standing water or in a highly corrosive coastal environment.
A standard socket set, ratchet, or a spanner that fits the M8 hexagon head is required.
DIN 571 is a German industrial standard that defines the specifications for hexagon-headed wood screws, ensuring uniformity in size and thread.
Ensure a pilot hole has been drilled; for denser timbers, increase the pilot hole diameter slightly.
The pilot hole is likely too small or missing. Always drill a pilot hole before inserting the screw.
Ensure the socket size matches the head correctly and that the tool is fully engaged on all six sides of the screw head.
For optimal performance, always select a drill bit slightly smaller than the shank diameter of the screw to create a clean pilot hole. When installing, use a socket driver or an adjustable wrench to firmly seat the screw. Because these are bright zinc plated, they are best kept in dry or covered exterior environments. If you are working in highly saline or coastal environments, consider applying an additional anti-corrosion spray or selecting a stainless steel alternative if long-term exposure is expected. Store in a cool, dry place to prevent premature oxidation of the zinc coating.
