Zinc Plated Carriage Bolts with Nuts

About Zinc Plated Carriage Bolts with Nuts

Zinc plated carriage bolts with nuts, also known as cup square bolts, are designed for clamping timber or attaching ironmongery to timber in general construction and joinery applications. 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 that allows secure tightening from one side. This makes zinc plated carriage bolts a practical choice for everyday timber connections.

Designed for Internal and Sheltered Use

Manufactured from grade 4.8 carbon steel and finished with zinc plating, these carriage bolts are intended for internal or sheltered environments where exposure to moisture is limited. Zinc plating offers basic corrosion protection and is suitable for dry or controlled conditions.

All sizes up to and including 150mm are fully threaded, while longer lengths feature a defined threaded section to support secure clamping performance.

Typical Applications

Zinc plated carriage bolts with nuts are commonly used for:

• Internal timber construction
• Joinery and workshop assembly
• Fixing brackets and ironmongery to timber
• General maintenance and repair work

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

Choosing the Right Bolt Size