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The Range£10.22Visit shop Unifix Mushroom Head Roofing Bolts And Nuts Bright Zinc Plated - M6 X 16 (Box Of 125) - Blue
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The Unifix Mushroom Head Roofing Bolts and Nuts are designed for DIY enthusiasts and professionals seeking a secure, load-distributing fastener for roofing and construction projects. These fasteners offer excellent stability and corrosion resistance due to their bright zinc-plated finish, though users should ensure they select the correct bolt length for their specific material thickness as the mushroom head requires a flat surface to seat properly.
| Colour | Silver |
|---|---|
| Model Part Number | 5014196544939 |
| Brand | Unifix |
Yes, the bright zinc-plated (BZP) finish is specifically designed to provide effective corrosion resistance for outdoor roofing and construction projects.
Absolutely. These bolts are frequently used for exactly this type of application, provided the length of the bolt is appropriate for the combined thickness of the materials.
You only need basic hand tools such as a wrench, spanner, or pair of pliers to hold the nut securely while the bolt is tightened.
No, the mushroom head is typically tightened by turning the nut on the opposite side, as the square neck design prevents the bolt itself from rotating.
Yes, Unifix produces these bolts in various lengths, such as 20mm, 25mm, 40mm, 50mm, 80mm, and 100mm, to suit different material thicknesses.
The square shoulder under the mushroom head is intended to lock into the material. Ensure the hole is not too large and gently tap the bolt head into place to seat the shoulder before tightening.
Check the bolt threads for debris or paint residue. If the threads are clean, use a small amount of lubricant to ease the installation.
Installation requires standard wrenches or pliers to hold the nut in place while tightening the bolt. Because these are M6 fasteners, ensure that your pilot holes are drilled slightly larger than 6mm to allow for easy insertion without damaging the threads. To maintain the life of the plating, avoid using power impact drivers at high speeds, which can strip the zinc coating. If you are working in a highly corrosive environment, consider applying a thin layer of exterior-grade sealant or a protective spray over the bolt head after installation to further prolong the life of the finish.
