Exterior Green Carriage Bolts with Washer & Nut

About Exterior Green Carriage Bolts

Exterior green carriage bolts, also known as cup square bolts, are heavy-duty fixings designed for fastening timber in outdoor environments. The domed head provides a neat, finished appearance, while the square anti-spin shoulder beneath the head locks into the timber to prevent rotation during tightening.

Each bolt is supplied with a matching nut and washer, providing a complete fixing solution for clamping timber sections together or attaching ironmongery to timber. This allows secure tightening from one side and improves load distribution across the timber surface.

Designed for External Timber Construction

These carriage bolts are coated with a patented multi-layer corrosion-resistant exterior green plating. This finish is designed to withstand up to 500 hours salt spray, making it suitable for exposed and demanding outdoor environments.

Manufactured in accordance with DIN 603, DIN 934 and DIN 125-A standards, these fixings offer consistent quality and reliable performance for exterior timber construction.

M10 - A Practical Choice for Structural Timber

This category is supplied exclusively in M10, a commonly used size for external timber construction. M10 carriage bolts provide a good balance between strength and ease of installation, making them suitable for applications such as decking subframes, fencing, gates, pergolas, sleepers and general landscaping structures.

The M10 diameter offers dependable load capacity for structural timber connections without the handling challenges of larger bolt sizes.