Unifix Galv Extra Large Head Clout Nails 40 x 3.00mm - Silver

Unifix Galvanised Extra Large Head Clout Nails are designed for durability and strength, making th...

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OnBuy.comUnifix Galv Extra Large Head Clout Nails 20 X 3.00Mm - 9Galvelhctq/005 - Box Of 10 5014196100142
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The RangeUnifix Galv Extra Large Head Clout Nails 20 X 3.00Mm - Box Of 10 - Grey
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eBayUnifix Galv Extra Large Head Clout Nails 13 x 3.00mm - 500g - Box of 10
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DebenhamsUnifix Unisex Silver Galv Extra Large Head Clout Nails 20 X 3.00Mm - Box Of 10 In
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B&QB&Q - Galv Extra Large Head Clout Nails 20 X 3.00mm9Galvelhctq/005Box Of 10
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eBayUnifix Extra Large Head Clout Nails 20mm X 3.0mm 2.5kg
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Product Information

Full details

The Unifix Galvanised Extra Large Head Clout Nails are an essential hardware solution for professional contractors and DIY enthusiasts who require secure, weather-resistant fastening for roofing, fencing, and general construction projects. Measuring 40 x 3.00mm, these nails feature an oversized head that distributes pressure effectively, ensuring materials stay firmly in place; however, users should ensure they are using the correct length for their specific substrate thickness to avoid protrusion or insufficient grip.

All features

ColourSilver
Model Part Number9GALVELHCTQ/007
BrandUnifix

Extended Product Information

FAQs

Are these nails suitable for marine environments?

While the galvanised coating offers good corrosion resistance, they are not intended for continuous saltwater immersion; for marine applications, stainless steel fasteners are recommended.

Can these be used with a pneumatic nail gun?

These are designed for manual application with a hammer. Using them in a nail gun is not recommended unless the tool is specifically calibrated for this shank size and nail head type.

How many nails are in a 500g bag?

The total count varies slightly based on manufacturing tolerances, but 500g provides a significant quantity for professional roofing or siding tasks.

Do I need to paint over these to prevent rust?

No, the galvanised finish is designed to provide long-lasting rust protection, meaning no additional protective coating is required for standard outdoor use.

Are these nails smooth or ring-shanked?

These nails feature a standard smooth shank, providing a balance between ease of installation and reliable holding power in timber.

Troubleshooting

Nail head creates a depression in the material

Adjust your strike force as the nail reaches the surface and consider using a nail punch to seat it perfectly.

Nail bending during installation

Ensure you are using a sharp, clean hammer face and strike directly in line with the nail shank to prevent side-loading.

Pros and Cons

Pros

  • Excellent rust resistance due to galvanised coating
  • Extra large head prevents pull-through in thin materials
  • Convenient 500g polybag packaging for easy handling
  • Suitable for both internal and external construction tasks

Cons

  • Length may not be suitable for heavy-duty structural framing
  • Galvanised finish can show minor scuffs during hammering
  • Limited to 40mm length in this specific variant

Setup, Compatibility & Care

To ensure the best results, always pilot drill if you are working with hardwoods to prevent splitting, though these nails are primarily optimized for soft-to-medium timber substrates. When storing your Unifix nails, keep the polybags in a dry, ventilated area. Although they are galvanised for corrosion resistance, long-term exposure to extreme moisture in an opened bag can eventually degrade the finish. Use a standard hammer for installation, and for professional roofing work, consider using a specialized roofing hammer which often features a magnetic nail holder for easier single-handed placement.

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