Forgefix Carriage Bolt & Nut - M6 x 65mm - Bag 10 - White

'M6' refers to the metric thread diameter, which is 6 millimeters. '65' indicates the length of the bolt from under the head to the end of the thread, which is 65 millimeters.

Yes, these Forgefix Coach Bolts are zinc-plated, which provides good resistance to corrosion, making them suitable for many outdoor applications such as garden furniture, pergolas, and fence panels.

You will typically need a drill with a suitable wood drill bit (e.g., 6.5mm or 7mm for M6), a hammer to seat the square neck, and a spanner or socket wrench (usually 10mm for an M6 nut) to tighten the nut.

No, the product description specifies these bolts are ideal for 'low load bearing applications.' For heavy structural work or applications under significant stress, you should consult engineering specifications and use fasteners designed for those loads.

The square neck design beneath the bolt head is crucial for timber applications. When the bolt is inserted into a drilled hole and the neck is tapped into the wood, it bites into the timber, preventing the bolt from rotating while you tighten the nut from the other side.

Zinc-plating is a process where a thin layer of zinc is applied to the steel bolt. This zinc acts as a sacrificial coating, corroding before the steel underneath, thus protecting the bolt from rust and extending its lifespan, especially in damp or outdoor conditions.

While technically possible, it's generally not recommended to reuse fasteners, especially in critical applications. The threads can wear, and the square neck's grip on the timber may be compromised, potentially reducing the joint's integrity.

The square neck of the bolt has not fully seated into the timber. Remove the nut, reposition the bolt, and gently tap the bolt head with a hammer to ensure the square neck bites firmly into the wood before retrying.

Check for debris or damage on the bolt threads or inside the nut. Clean threads if necessary. Ensure the nut is aligned straight and not cross-threaded. If resistance persists, try a different nut from the pack.

This often occurs due to over-tightening or an undersized pilot hole. Ensure the pilot hole is appropriately sized for the bolt (e.g., 6.5mm for M6 in softer woods; slightly larger in harder woods if splitting is an issue). Avoid excessive force when tightening.

While zinc-plated, severe or constant exposure to moisture can still lead to corrosion over time. For highly exposed outdoor or marine environments, consider using stainless steel bolts or applying an additional protective coating (e.g., marine-grade paint) to the installed fixings.