Stainless Steel Carriage Bolts
A2 stainless steel carriage bolts designed for timber construction where corrosion resistance and a clean, durable finish are essential.
About Stainless Steel Carriage Bolts
Stainless steel carriage bolts, also known as cup square bolts, are designed for secure timber connections where corrosion resistance and reliability are critical. 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.
This design allows the bolt to be tightened from one side, making carriage bolts a practical choice for clamping timber sections together or fixing ironmongery directly to timber.
Designed for External and Corrosive Environments
Manufactured from A2 stainless steel, these carriage bolts 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 characterist.
Choosing the Right Bolt Size
| Bolt size | Typical uses | Load level |
|---|---|---|
| M6 | Brackets and fittings Light timber assemblies Small framing and fix-out work Limited-space applications |
Light duty |
| M8 | Timber fencing and gates General construction and landscaping Timber-to-timber connections |
Medium duty |
| M10 | Decking subframes Structural timber connections Posts, beams and sleepers Timber-to-steel fixing |
Heavy duty |
| M12 | Structural timber construction Pergolas and carports Heavy fencing and landscaping Structural posts and beams |
Structural / load-bearing |


