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Power Tools Direct£0.86Visit shop Fandf 10Cb640 Carriage Bolts With Hex Nuts - Zinc Plated M6 X 40Mm (Bag Of 10)
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Debenhams£5.44Visit shop Forgefix Unisex Silver Carriage Bolt & Nut Zp M6 X 130Mm Bag 10 In
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This guide is for anyone looking to achieve robust and secure timber-to-timber fastenings, such as in decking, fencing, or general construction. The Forgefix M6 x 100mm Zinc Plated Carriage Bolt & Nut provides a strong, anti-rotation connection with enhanced corrosion resistance. While highly effective for wood, its design is optimized for timber applications and may require specific considerations for other materials. This product includes a fully threaded M6 x 100mm carriage bolt with a domed head, square anti-rotation neck, and a compatible hex nut, all conforming to DIN 603 and DIN 934 standards.
| Colour | White |
|---|---|
| Model Part Number | 10CB6100 |
| Brand | Forgefix |
The 'M6' refers to the bolt's metric diameter of 6 millimeters. The '100mm' indicates the total length of the bolt from the underside of the domed head to the tip of the thread.
Yes, the zinc plating provides a good level of corrosion resistance, making these bolts suitable for various outdoor applications such as decking, fencing, and garden furniture.
This square section is designed to embed itself into the timber as the bolt is driven in. This prevents the bolt from spinning when you tighten the hex nut from the other side, allowing for single-tool fastening.
Yes, it is highly recommended to pre-drill a pilot hole with a 6mm drill bit for an M6 bolt. This prevents timber splitting and ensures the square neck seats correctly for optimal performance.
The bolt length should be equal to the combined thickness of the materials being joined, plus the thickness of any washers, plus enough length for the hex nut to fully engage its threads. For a 100mm bolt, you might join two 40mm thick timbers with a washer and nut.
While they can pass through metal, these bolts are primarily designed to have their square neck grip into timber. For metal-to-metal connections, other types of bolts or rib neck carriage bolts designed to grip metal would be more appropriate.
The square neck under the bolt head is not fully seated into the timber. Ensure the pilot hole is the correct size (6mm for M6) and use a hammer or clamp to firmly embed the square section into the wood.
Check that the pilot hole is correctly sized (6mm for M6) and free of obstructions. If the timber is very dense, a slight chamfer around the hole on the head side can help guide the square neck in.
While zinc plating offers good corrosion resistance, it can be compromised by extreme environmental conditions (e.g., saltwater), mechanical damage, or harsh chemicals. Ensure proper application and consider additional protection in highly corrosive areas. Store unused bolts in a dry place.
Re-tighten the hex nut. Timber can compress or settle over time. For critical applications, consider using a lock washer or self-locking nut to enhance long-term stability.
