Stainless Steel Carriage Bolts with Nuts

About Stainless Steel Carriage Bolts with Nuts

Stainless steel carriage bolts with nuts, also known as cup square bolts, are designed for secure timber connections where corrosion resistance and long-term durability are essential. The domed head provides a smooth, finished appearance, while the square anti-spin shoulder beneath the head bites into the timber to prevent rotation during tightening.

Each bolt is supplied with a matching nut, providing a complete fixing solution for clamping timber sections together or fixing ironmongery directly to timber. This makes installation quicker and ensures compatibility between components.

Designed for External and Corrosive Environments

Manufactured from A2 stainless steel, these carriage bolt and nut sets are well suited to applications where plated or coated fixings may deteriorate over time. Stainless steel should be used where fixings are exposed to moisture or where the base material has inherent corrosive characteristics.

Common environments include:

• External applications
• Damp or exposed locations
• Coastal or high-humidity areas
• Treated or green timber, such as green oak

The corrosion resistance of A2 stainless steel helps prevent rust staining and supports reliable performance in demanding conditions.

Typical Applications

Stainless steel carriage bolts with nuts are commonly used for:

• Timber fencing and gates
• Decking subframes and landscaping structures
• Pergolas, carports and garden buildings
• General structural timber connections

The domed head provides a neat, low-profile finish, making these fixings suitable for visible installations where appearance matters.

Choosing the Right Bolt Size