Forgefix Carriage Bolt & Nut - M6 x 50mm - Bag 10 - White

For an M6 coach bolt, it's generally recommended to drill a pilot hole for the shaft that is slightly smaller than the 6mm diameter (e.g., 5mm or 5.5mm, depending on timber hardness) and a separate, larger hole for the square neck section that matches its dimensions to ensure it embeds securely without splitting the wood. Always test on a scrap piece first.

No, these Forgefix Coach Bolts are specifically designed for low load-bearing applications. They are not suitable for heavy-duty structural work where high tensile or shear forces are expected. Using them in such applications could compromise safety and structural integrity.

Yes, these bolts feature a zinc-plated finish, which provides good resistance to corrosion and rust. This makes them well-suited for outdoor use in applications such as garden furniture, pergolas, and fence panels, offering durability against various weather conditions.

No, the Forgefix Coach Bolt & Nut M6 x 50 pack includes the coach bolts and hex nuts only. Washers are not provided. If your application requires washers for increased bearing surface or to protect the timber, you will need to purchase them separately.

To install these coach bolts, you will typically need a drill with appropriate wood drill bits (one for the shaft and one for the square neck) and a spanner or wrench sized for the M6 hex nut (usually 10mm or 11mm, verify with the actual nut).

Ensure the square neck of the coach bolt is fully embedded and gripping the timber. If the timber is too soft or the pilot hole for the square neck is too large, the neck may not engage properly. Try inserting a small piece of wood or a washer behind the square neck to increase friction, or use a new bolt in a slightly tighter hole.

Check for cross-threading by removing the nut and re-aligning it carefully. Ensure there is no debris or damage to the bolt's threads or the nut's internal threads. If damage is present, replace the affected component.

This could indicate that the timber has compressed, or the bolt is not long enough for the material thickness. For timber compression, you may need to re-tighten. If the bolt is too short, the threads may not fully engage; ensure the bolt length is appropriate for your material thickness, allowing enough thread for the nut to tighten securely.