Unifix Coach Screws - M10 X 130

The Unifix Coach Screws Hexagon Head DIN 571 BZP CE - M10 x 130 are designed for secure fastening ...

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The RangeUnifix Coach Screws Hexagon Head Din 571 Bright Zinc Plated Ce - M6 X 20 (Box Of 200) - White
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eBayUnifix Coach Screws Hex Head DIN 571 BZP CE M6 x 20 Box of 200
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OnBuy.comUnifix Coach Screws Hexagon Head Din 571 Bzp Ce - M6 X 20 - Box Of 200 5014196480176
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B&QB&Q - Coach Screws Hexagon Head Din 571 Bzp CeM6 X 20Hxc06 020 000Box Of 200
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DebenhamsUnifix Unisex Silver Coach Screws Hexagon Head Din 571 Bzp Ce M10 X 130 - Box Of 25 In
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Product Information

Full details

This guide is for builders, woodworkers, and DIY enthusiasts who need reliable fasteners for wooden structures. The Unifix Coach Screws M10 x 130 offer a secure and durable fastening solution with ease of installation. A key consideration is ensuring the screw is appropriate for the specific wood type and load requirements.

All features

Model Part NumberHxc10 130 000
BrandUnifix

Extended Product Information

FAQs

What type of wood can these screws be used in?

Unifix Coach Screws M10 x 130 are suitable for a wide range of softwoods and hardwoods. For very dense hardwoods, careful pilot hole drilling is essential.

Do I need a special tool to install these screws?

You will need a socket wrench or spanner that fits the M10 hexagon head. Standard drive bits for impact wrenches or drills can also be used if they are the correct size.

What is the purpose of the BZP finish?

BZP (Bright Zinc Plating) provides a protective layer that enhances corrosion resistance, helping to prevent rust and extend the lifespan of the screw, especially in outdoor or humid environments.

Are these screws suitable for outdoor use?

Yes, the BZP finish offers good protection for outdoor use. However, for continuous exposure to harsh weather, additional protective measures like sealing may be beneficial.

What does DIN 571 standard mean?

DIN 571 is a German Institute for Standardization (Deutsches Institut für Normung) standard specifying requirements for hexagon head wood screws, ensuring quality and performance consistency.

Can I use these screws for structural framing?

Yes, due to their robust M10 size and design, they are suitable for structural applications in wood where strong load-bearing connections are required.

What is the difference between a coach screw and a lag screw?

Coach screws and lag screws are essentially the same type of fastener, characterized by a hexagon head and a coarse thread designed for wood. The term 'coach screw' is more common in some regions.

Troubleshooting

Screw does not grip the wood firmly.

Ensure a pilot hole of the correct diameter has been drilled. The hole may be too large for the screw; try a smaller pilot hole or use a screw with a larger diameter if appropriate for the load.

Hexagon head strips or cam-out occurs during tightening.

Use the correct size socket or wrench. Ensure the tool is fully seated on the head. Apply steady, even pressure. If stripping has occurred, you may need to use locking pliers to remove the screw and start again with a new one.

Screw is difficult to drive into the wood.

Verify the pilot hole is adequate and not clogged with debris. The wood may be exceptionally dense; a slightly larger pilot hole might be necessary, or consider a screw with a more aggressive thread if available.

Corrosion or rust appearing on the screw.

BZP is a protective finish but not impervious to all environments. Clean the affected area and apply a suitable metal primer and paint for added protection, especially in coastal or high-humidity areas.

Pros and Cons

Pros

  • Durable BZP coating resists rust and corrosion.
  • Hexagon head allows for high torque application.
  • Excellent grip and holding power in wood.
  • Meets DIN 571 standards for quality assurance.
  • Suitable for heavy-duty and structural projects.

Cons

  • Requires pre-drilling pilot holes in most wood types.
  • May be prone to cam-out if excessive force is applied incorrectly.
  • BZP finish can sometimes be less durable than other coatings under extreme conditions.

Setup, Compatibility & Care

Setup:

  1. Pilot Hole: Always drill a pilot hole before inserting the coach screw. The pilot hole diameter should be slightly smaller than the screw's core diameter to ensure maximum grip. For M10 screws, a pilot hole of approximately 6-7mm is often recommended, depending on the wood density.
  2. Insertion: Use a socket wrench or a spanner that fits the hexagon head snugly. Apply steady pressure and rotate clockwise to drive the screw into the pilot hole.
  3. Tightening: Tighten until the screw head is firmly seated against the surface. Avoid overtightening, which can strip the wood or damage the screw.

Compatibility:

These coach screws are designed for use with hardwoods and softwoods. They are not intended for direct use in metal or masonry without appropriate anchors or preparation.

Care:

While the BZP (Bright Zinc Plating) finish offers good corrosion resistance, it is advisable to:

  • Store screws in a dry environment.
  • Clean any dirt or debris from the screws after installation, especially in outdoor applications.
  • For prolonged exposure to harsh conditions, consider additional protective coatings or sealants.

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