The Galvanised U-bolt (5mm x 30mm) is a versatile hardware fastener used to secure pipes, conduits, or cables to flat surfaces or poles. The “5mm” refers to the thread diameter (M5), while the “30mm” typically indicates the internal width (the distance between the two legs of the “U”).
Technical Specifications
- Thread Size: M5 (5mm diameter).
- Internal Width: 30mm.
- Material: Carbon steel.
- Finish: Hot-dip galvanised or electro-galvanised for superior rust resistance, making it suitable for outdoor or coastal use.
- Components: Usually sold as a single unit (“Each”) and typically includes two nuts and sometimes a back plate (saddle).
Key Applications
- Plumbing & Irrigation: Securing small PVC or copper pipes to walls or frames.
- Fencing: Attaching wire or small bracketry to square or round tubing.
- Marine & Outdoor: Because of the galvanised coating, these are often used on boat trailers or outdoor signage where moisture is a factor.
- DIY Projects: General-purpose clamping for home repairs or custom brackets.



