Unifix Round Roofing Washers - Silver
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B&QB&Q - Round Roofing Washers Bzp M6 X 20 X 1.69Bzrndrwash/005
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B&Q - Round Roofing Washers Bzp M8 X 21 X 1.79Bzrndrwash/010Box Of 100Free delivery in 1–3 days£7.85Visit shop →
The RangeUnifix Round Roofing Washers Bzp M6 X 20 X 1.6 - 9Bzrndrwash/005 - Silver
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Unifix Round Roofing Washers Bzp M8 X 21 X 1.7 - 9Bzrndrwash/010 - Box Of 100 - SilverFree delivery in 1–3 days£7.12Visit shop →
DebenhamsUnifix Unisex Silver Round Roofing Washers Bzp M6 X 20 X 1.6 In
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Unifix Unisex Silver Round Roofing Washers Bzp M8 X 21 X 1.7 - Box Of 100 InFree delivery in 1–3 days£7.39Visit shop →
Product Information
Full details
The Unifix Round Roofing Washers are designed for professional contractors and DIY enthusiasts who require a reliable, secure fastening solution for roofing projects and general construction. These washers provide excellent structural support and help create a weather-tight seal when paired with M6 bolts, though they are specifically sized for M6 hardware and may not be compatible with larger diameter fasteners.
All features
| Colour | Silver |
|---|---|
| Model Part Number | 9Bzrndrwash/005 |
| Brand | Unifix |
Extended Product Information
FAQs
Can I use these washers with M8 bolts?
No, these washers are specifically designed for M6 bolts. For M8 hardware, you should use the Unifix M8 x 21 x 1.7 variant.
What is the outer diameter of the washer?
The outer diameter of this specific model is 20mm.
Are these washers suitable for coastal areas?
While the BZP finish offers good corrosion resistance, high-saline environments may require more frequent inspections for signs of oxidation.
Can these be used for automotive repair?
These are primarily intended for roofing and construction; while they fit M6 bolts, verify they meet the specific grade or material requirements for your automotive application.
Do these washers come with a rubber seal?
No, these are solid metal washers designed for structural support and load distribution.
Troubleshooting
Washer rattling after installation
The bolt has not been tightened sufficiently; ensure the washer is compressed against the roofing material to create a secure seal.
Signs of rust appearing on the washer
The BZP coating may have been scratched during installation; apply a cold-galvanizing spray or clear coat to seal the exposed metal.
Pros and Cons
Pros
- Excellent corrosion resistance due to BZP finish
- Provides a secure and stable load-bearing surface
- Simple design allows for quick and efficient installation
- Ideal size for standard residential roofing applications
Cons
- Not compatible with bolts larger than M6
- Specific to silver/BZP aesthetic requirements
- Requires proper tightening to achieve a full seal
Setup, Compatibility & Care
To install, simply slide the washer onto the shank of your M6 bolt before threading it through the roofing material. Ensure that both surfaces are clean and free of debris to allow the washer to sit flush. Because these are BZP finished, they are compatible with most standard steel roofing components; however, avoid mixing them with highly reactive metals to prevent galvanic corrosion. To maintain the life of the finish, avoid using abrasive cleaning tools that could scratch the zinc plating. If the washers are exposed to harsh salt-air environments, consider periodic inspection for signs of surface wear.