Hardware U-bolts, muvuo U-Bolts, are designed to clamp pipes, conduit and brackets securely, using corrosion-resistant 304 stainless steel. Installers and boat owners will appreciate durable fixings that resist rust and stay tight under vibration. Are M5*78 sizes and a 31mm internal diameter the right fit for your project?
⚡ At a Glance
- • Holding Strength: Firm clamping from M5 threaded rods and 6mm diameter legs
- • Best for: Plumbing, marine hardware, trailers and general pipe mounting
- • Not ideal for: Applications requiring electrical grounding or insulated fittings
Pack of four M5*78 U-bolts supplied with plates, washers and hex nuts. Inner diameter 31mm and thread length 48mm for secure tightening.
Corrosion resistance, with 304 stainless steel construction
Made from 304 stainless steel with a galvanised surface treatment, the metal resists corrosion, acids and water exposure. The material choice helps prevent rust and supports reuse in damp environments.
Long-lasting fixings suitable for boats, outdoor fittings and wet plumbing, reducing the need for frequent replacement.
Accurate clamp sizing, with a 31mm inner diameter and M5 threads
The U-bolts measure M5*78 total length, with a 31mm internal diameter, 36mm centre distance, 6mm rod diameter and 48mm thread length. Threaded arms work with the supplied hex nuts to allow sufficient nut engagement.
Ensures a snug fit around pipes and tubes around 31mm diameter, so clamps remain tight and aligned during service.
Stable fastening, with washers, plates and a gasket-like contact increase
Each bolt is installed through plates and washers, which increase contact area and distribute pressure across the clamped part. The arrangement reduces local stress and helps prevent loosening under vibration.
More secure hold for mounted parts, protecting both the bracket and fastener, and allowing parts to be reused where needed.
✨ The 4 Key Reasons for muvuo U-Bolts
- Pack of four , provides enough fittings for small repair or installation jobs
- Includes plates and washers , allows immediate mounting without sourcing extras
- 48mm thread length , accommodates thicker clamped materials and firm nut engagement
- Gasket-style contact increase , reduces pressure points and prevents parts from loosening
📋 Technical Details at a Glance
- Category: U-bolts and mounting hardware
- Material: 304 stainless steel
- Surface treatment: Galvanised finish
- Size (total length): M5*78
- Inner diameter: 31mm
❓ Frequently Asked Questions
Q: Are these U-bolts stainless steel?
A: Yes, the bolts are made of 304 stainless steel with a galvanised surface treatment, designed to resist corrosion and water exposure.
Q: What are the dimensions and thread size?
A: Total length is M5*78, inner diameter is 31mm, centre distance 36mm, rod diameter 6mm and thread length 48mm, with M5 threads.
Q: What hardware is included in the pack?
A: The set includes four U-bolts supplied with plates, washers and hex nuts for direct installation.
🏆 Our Verdict
Suitable for installers, boat owners and DIYers who need dependable clamps for pipes, trailers and brackets. Robust 304 stainless steel and included plates and washers make secure mounting straightforward. Durable construction and reusable fittings deliver good long-term value for routine marine and plumbing applications.
