Forgefix Coach Bolt & Nut - Silver - M10 x 65mm

"M10" refers to the bolt's diameter (10 millimeters), and "65" refers to its length (65 millimeters) from under the head to the tip of the thread.

No, these coach bolts are designed for "low load bearing applications" and are not suitable for heavy structural loads where high shear or tensile strength is required.

Yes, it is highly recommended to drill a pilot hole slightly larger than the bolt's threaded shaft to prevent timber splitting and ensure proper engagement of the square neck.

Yes, the zinc-plated finish provides good corrosion resistance, making them suitable for many outdoor applications like garden furniture and pergolas.

The square neck under the bolt head is designed to embed into the timber, preventing spinning. If it still spins, ensure the pilot hole isn't too wide and tap the bolt head gently to fully seat the square neck.

You will need a drill with an appropriate sized drill bit (e.g., 10-11mm) for the pilot hole, and a spanner or wrench to tighten the M10 hex nut. A hammer may also be useful to seat the bolt head.

While technically possible, for critical applications, it's generally best practice to use new fasteners to ensure optimal strength and security. Repeated tightening can wear down threads or compromise the integrity of the square neck.

The square neck is not fully engaged in the timber. Remove the nut, tap the bolt head firmly with a hammer to embed the square neck into the timber, then re-attach and tighten the nut. Ensure your pilot hole is not too large.

The pilot hole might be too small, or the timber is too close to an edge. Ensure the pilot hole diameter is appropriate for the bolt shaft, and avoid fastening too close to timber edges. Consider using a washer under the nut to distribute pressure.

While zinc-plated, prolonged harsh exposure can lead to corrosion. Clean affected areas with a wire brush, and apply a rust-inhibiting primer and paint to protect the fastener. For future projects in very harsh conditions, consider hot-dip galvanized or stainless steel options.

Ensure you have selected the correct bolt length for your timber thickness. The bolt should pass through both timber pieces with enough thread protruding to fully engage the nut and potentially a washer.