ForgeFix Carriage Bolts M12 x 240mm Zinc Plated Bag 5

The Forgefix Carriage Bolts are expertly crafted fasteners ideal for timber-to-timber joining applications. With a zinc plating, these bolts are designed to resist oxidation, ensuring a longer-lasting finish through protective barrier formation. The bolts come complete with a hex nut and feature full threading up to 100mm, making them versatile for various constructions.

Design and Features

Also known as Cup Square Hex Bolts or coach bolts, these carriage bolts have a distinctive design that includes a domed or countersunk head. A notable feature of these bolts is the square section beneath the head. This square section is critical as it prevents the bolt from rotating when the nut is tightened, allowing for secure and reliable fastening.

Another variation available is the rib neck carriage bolt, which includes several longitudinal ribs designed to grip into metal parts, providing additional holding power. Both options are tailored for different materials, making the Forgefix Carriage Bolts suitable for a broad spectrum of construction needs.

Standards and Specifications

The Forgefix Carriage Bolts adhere to rigorous quality standards, complying with DIN 603 for bolts and DIN 934 for nuts. These standards ensure that the bolts meet necessary performance benchmarks, making them trustworthy and effective for construction projects.

Applications

These carriage bolts are primarily used for fastening timber to timber and are extensively utilized in applications such as timber joist construction in house building and various decking projects. Their reliable grip and secure fastening characteristics make them an essential component in construction and DIY tasks.

Protection and Durability

The zinc coating on each bolt plays a dual role in protection. Firstly, it forms a barrier that prevents the underlying metal from oxidizing, thereby extending the lifespan of the bolt. Secondly, if this protective layer is compromised, the zinc acts as a sacrificial anode, further protecting the substrate against corrosion. The result is that the formation of zinc oxide—unlike iron oxide—does not degrade the surface integrity of the bolt, instead serving as an additional barrier against further oxidation.

In summary, the Forgefix Carriage Bolts with Nut ZP M12 x 240 are a reliable choice for anyone seeking durable, high-quality fasteners for timber joining applications. With their robust design, effective corrosion resistance, and adherence to manufacturing standards, they are well-suited for both professional builders and DIY enthusiasts aiming for long-lasting structural solutions.