Forgefix Coach Bolt & Nut - M6 x 75mm - 10 Pack - White

M6 refers to the bolt's nominal diameter of 6 millimeters for its thread. The '75' indicates the bolt's length, which is 75 millimeters, measured from the underside of the head to the tip of the thread.

While technically possible, these coach bolts are specifically designed with a square neck to prevent twisting in timber. For metal-to-metal connections, it's generally better to use hex bolts, machine screws, or specific metal fasteners that are designed for those materials and typically used with a washer and nut.

Yes, the zinc-plated finish provides good resistance against rust and corrosion, making them suitable for various outdoor applications such as garden furniture, pergolas, and fence panels.

You will need a drill with an appropriate wood drill bit for the pilot hole (slightly larger than 6mm, e.g., 6.5mm or 7mm), and a spanner or wrench of the correct size to tighten the M6 hex nut.

'Low load bearing' means these bolts are ideal for applications where the fastened components will not be subjected to significant weight, tension, or shear forces. They are perfect for stable connections in structures like garden furniture or fence panels, but not for primary structural supports that bear heavy loads.

Yes, you can paint over zinc plating. For best adhesion and durability, it's recommended to clean the bolts thoroughly and potentially use a primer suitable for galvanized or zinc-plated surfaces before applying your desired paint.

This usually means the square neck isn't properly engaged in the timber. Remove the bolt, ensure the pilot hole isn't too large, and reinsert, applying firm pressure to help the square neck bite into the wood. For very soft woods, a slightly smaller pilot hole may be needed for the square section.

This can happen due to timber movement or vibration. Consider using a washer (specifically a flat washer under the nut) to distribute pressure, or a lock washer (like a spring washer) to provide resistance against loosening. Periodically check and retighten.

Ensure the pilot hole is clean and free of debris. Check that the pilot hole diameter is appropriate – it should be slightly larger than the bolt's shaft (e.g., 6.5mm for M6) but not so large that the square neck can't bite. If the timber is very dense, a slightly larger pilot hole may be necessary for the shaft, but ensure the square neck still fits snugly.