Marine and trailer fasteners designed to hold pipes and bars securely, promising corrosion resistance and a reliable clamp. Uxcell Square U-Bolts give boat owners and DIYers confidence with stainless construction and included plates and nuts. Will the dimensions suit wider roof bars and trailer frames?
⚡ At a Glance
- • Holding Strength: Secure grip on pipes and bars, M8 threads with deep, clear cut reduce slippage
- • Best for: Boat trailers, roof racks and plumbing where corrosion resistance is required
- • Not ideal for: Applications needing an inner width larger than 112mm or alternative fixing types
Made from 304 stainless steel with a vibration-polished, glossy finish to resist corrosion. Includes plate and two nuts; M8 thread and 150mm total length suit pipes and many wider roof bars.
Reliable Hold - Thanks to M8 thread with deep cut
Thread diameter is M8 with a 1.25mm pitch and about 50mm of threaded length, while thread depth is described as deep and clear to reduce slippage. Rod diameter measures 7.1mm, and total length is 150mm, so the threaded portion and rod thickness combine for sturdy clamping.
A firm mechanical connection that resists loosening under vibration, ideal for trailer and rack use. Practical result is fewer re-tightening sessions and a safer load restraint.
Marine-grade Corrosion Resistance - With 304 stainless steel and a vibration-polished finish
Construction uses 304 stainless steel and a vibration polishing surface finish, producing a glossy, rounded surface that inhibits rust formation in wet environments. The bending forming process preserves structural integrity while finishing reduces exposed micro-roughness.
Durable performance in damp or salty conditions expected, so fittings remain serviceable on boats and trailers. Longer life between replacements reduces maintenance effort.
Ready-to-fit Mounting Kit - With included plate and nuts for immediate installation
Package contents list one U-bolt, two hex nuts and a frame plate sized 140 x 25 x 2mm; hex nut dimensions are 12.8 x 6.3mm. Plate and nuts are supplied to enable secure fastening without sourcing extra hardware.
Fitting can begin straight away, avoiding trips to buy matching plates or nuts. Users report good build quality and compatibility with wider roof bars, so aftermarket adaptions are minimal.
✨ The 4 Key Reasons for Uxcell Square U-Bolts
- 304 Stainless Steel - Resists corrosion in wet marine environments for long service life
- Deep-Cut M8 Threads - Reduce slippage and maintain clamp strength under vibration
- Included Mounting Plate and Nuts - Ready to fit immediately without hunting for parts
- 112mm Inner Width - Suits many wider roof bars and common trailer frame spacings
📋 Technical Details at a Glance
- Category: BISS
- Thread Diameter: M8
- Thread Pitch: 1.25mm
- Inner Width: 112mm (+/-3mm)
- Fit Rod Size: 110mm
❓ Frequently Asked Questions
Q: Are nuts and a plate included with the U-bolt?
A: Yes, the package includes one U-bolt, two nuts and one frame plate sized 140 x 25 x 2mm.
Q: Is the fitting suitable for marine use?
A: Yes, construction in 304 stainless steel with a vibration-polished finish is intended to resist corrosion and rust in wet environments.
Q: What bar or pipe sizes will it fit?
A: Inner width measures 112mm (+/-3mm) and fit rod size is 110mm, with a rod diameter of 7.1mm and a total length of 150mm, so compatibility should be checked against those dimensions.
🏆 Our Verdict
Suited to boat owners, trailer users and DIYers seeking corrosion-resistant clamps that fit wider bars. Construction from 304 stainless steel, clear deep threads and an included plate and nuts make it especially practical for marine and rack use. While retail cost varies, the durable materials and complete kit suggest good long-term value.
