Best Round U-Bolts of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 1 Feb 2025

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Round U-bolts are a type of fastener used to secure pipes, tubes, and cables to a surface or support structure. They consist of a curved U-shaped bolt with threads on both ends and a plate or bracket on each end to provide stability and support. Round U-bolts are commonly used in construction, automotive, and marine industries, as well as in various DIY projects. They are available in different sizes and materials to suit specific application requirements. The reliable and durable design of round U-bolts makes them a popular choice for securing heavy loads and stabilising structures.

At a Glance: Our Top Picks

sourcing map Round U-Bolts with Nuts and Washers Cover #TOP 1
sourcing map Round U-Bolts with Nuts and Washers
ftb score rating icon 9.8
sourcing map Round U-Bolts with Nuts and Washers Cover #TOP 2
sourcing map Round U-Bolts with Nuts and Washers
ftb score rating icon 9.7
sourcing map Round U-Bolts with Nuts and Plates Cover #TOP 3
sourcing map Round U-Bolts with Nuts and Plates
ftb score rating icon 9.5

Top 10 Round U-Bolts

#TOP 1

sourcing map Round U-Bolts with Nuts and Washers

a21012900ux0086
Silver
M6x20mmx50mm
sourcing map Round U-Bolts with Nuts and Washers Cover
sourcing map Round U-Bolts 8 Sets 0.79"(20mm) Inner Width 50mm Length Steel M6 with Nut, Plate, Washer

The sourcing map U-Bolts feature a thread diameter of M6, making them suitable for various applications. With an inner width of 20mm and a total length of 50mm, they provide a secure fit for pipes and other components. Each set includes 8 U-bolts, 16 nuts, and 16 round washers, ensuring you have everything you need for installation. Additionally, the steel construction with a galvanised surface treatment offers excellent rust and corrosion resistance, promoting durability and longevity for your projects.

What We Like
Durable steel construction
Corrosion-resistant galvanised finish
Includes all necessary components
Suitable for various applications
#TOP 2

sourcing map Round U-Bolts with Nuts and Washers

a21012900ux0085
Silver
M6x20mmx50mm
sourcing map Round U-Bolts with Nuts and Washers Cover
sourcing map Round U-Bolts 4 Sets 0.79"(20mm) Inner Width 50mm Length Steel M6 with Nut, Plate, Washer

The sourcing map U-Bolts come with a range of useful features. With a thread diameter of M6 and a length of 50mm, they are designed to securely fasten components to various materials, such as pipes and wood. Their hex nuts and steel construction ensure high durability and resistance to rust and corrosion, giving you peace of mind in your projects. The included round washers provide extra stability, making the installation process easier and more reliable for your connections.

What We Like
High durability and strength
Rust and corrosion resistant
Easy installation process
Suitable for various applications
Includes all necessary components
#TOP 3

sourcing map Round U-Bolts with Nuts and Plates

a21012900ux0123
Silver
M8x25mmx90mm
sourcing map Round U-Bolts with Nuts and Plates Cover
sourcing map Round U-Bolts 2 Sets 0.98"(25mm) Inner Width 90mm Length Steel M8 with Nut, Plate

The sourcing map U-Bolts are designed for versatility and strength. With a thread diameter of M8 and a suitable rod size of 25mm, these bolts securely fasten components to various surfaces. Their total length of 90mm provides ample space for attachment. Made from steel with a galvanized surface treatment, they offer excellent rust and corrosion resistance, ensuring durability in outdoor conditions. This means you can confidently use them for boats, pipelines, trailers, and other industrial applications.

What We Like
Durable steel construction
Excellent corrosion resistance
Easy installation with nuts
Versatile for multiple applications
High tensile strength
#TOP 4

sourcing map U-Bolts with Nuts and Plates

a24073100ux1928
Silver
sourcing map U-Bolts with Nuts and Plates Cover
sourcing map Round U-Bolts, 4 Sets 35mm(1.38") Inner Width 53mm Length M6 304 Stainless Steel U Clamp Bolt with Nuts and Plates, for Boat Trailer

The sourcing map U-Bolts are designed for versatility and durability. With a thread diameter of M6 and an inner width of 35mm, they are ideal for securely fastening pipes and wood. The total length of 53mm ensures a snug fit in various applications. Made from 304 stainless steel, these U-bolts feature a polished surface that resists corrosion, making them perfect for wet environments. Additionally, the package includes nuts and plates for enhanced usability, ensuring you have everything needed for a secure installation.

What We Like
Made of durable stainless steel
Includes nuts and plates
Corrosion-resistant design
Clear and deep threads
#TOP 5

sourcing map 304 Stainless Steel U-Bolts

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M8x50mmx75mm
sourcing map 304 Stainless Steel U-Bolts Cover
sourcing map Round U-Bolts, 6 Sets 50mm(1.97") Inner Width 75mm Length M8 304 Stainless Steel U Clamp Bolt with Nuts and Plates, for Boat Trailer

The sourcing map U-Bolts feature an M8 thread diameter and a 50mm inner width, making them ideal for securing various components. With a total length of 75mm, they fit a rod size of 48mm, ensuring compatibility with many applications. The U-bolt’s construction from 304 stainless steel provides durability and resistance to rust, making them suitable for wet environments. Additionally, deep and clear threading prevents slippage, giving you confidence during installation.

What We Like
Durable 304 stainless steel
Deep, clear threading
Includes nuts and plates
Corrosion and rust resistant
Versatile for various applications
#TOP 6

JZK Stainless Steel U Bolt Set with Nuts

JZK
M461886U-P
Silver
JZK Stainless Steel U Bolt Set with Nuts Cover
JZK 4 x Stainless steel U bolt set M5x78 oval round U-bolts with nut and plate for boat hardware automotive

The JZK U Bolt Set includes four high-quality stainless steel U bolts, complete with nuts and plates, fulfilling a variety of needs. Constructed from durable 304 stainless steel, these bolts are wear-resistant and rust-proof, ensuring longevity even in challenging environments. Measuring 78 x 48mm, they are versatile enough for use with pipes, wood, and various fixtures. Whether you're working on marine hardware, automotive projects, or plumbing tasks, this set provides the reliability and strength you require.

What We Like
Durable 304 stainless steel
Versatile for various applications
Rust-proof and corrosion-resistant
Includes nuts and plates
Sturdy and wear-resistant

Stainless Steel U-Bolts with Nuts and Washers

Silver
Stainless Steel U-Bolts with Nuts and Washers Cover
Stainless Steel Tie Down U Bolts, Metal Round U Shape Bolts with Hex Nuts, Plates, Washers for Attaching Piping Conduit Cable Tube Trailer Marine Boat Deck (right angle 62x25mm)

The Jttxiu U-Bolts are designed for high load capacity, ensuring they can securely hold pipes, sheet metal, and wood panels. Made from high-quality stainless steel, these bolts are tough and resistant to corrosion, making them suitable for various outdoor projects. Their easy installation process allows you to quickly fix them in place with minimal effort. Additionally, they are versatile and can be used for a range of applications in both home and industry, from towing to clamping.

What We Like
High load capacity
Corrosion-resistant stainless steel
Simple installation process
Versatile for various applications
#TOP 8

Stainless Steel U-Bolts with Nuts and Washers

M12 - 2Pcs
Stainless Steel U-Bolts with Nuts and Washers Cover
Metal Round U Bolt, Stainless Steel U Shape Bolts Length Steel with Hex Nut, Plate, Washer forr Attaching Piping Conduit Cable Tube Brackets Boat Trailer

The muvuo U-Bolts are crafted from high-quality 304 stainless steel, ensuring exceptional durability and resistance to corrosion, rust, and acids. With a total length of 150mm and an inner diameter of 48mm, these bolts come with washers and plates for easy installation. The two threaded arms provide a secure grip, making them ideal for fixing or connecting components in various applications, including plumbing and marine hardware. Their sturdy construction allows for long-lasting reuse, giving you peace of mind in your projects.

What We Like
Corrosion and rust resistant
Easy installation with washers
Secure grip with threaded arms
Durable and reusable construction
#TOP 9

sourcing map Round U-Bolts with Nuts and Plates

a21012900ux0135
Silver
M8x35mmx75mm
sourcing map Round U-Bolts with Nuts and Plates Cover
sourcing map Round U-Bolts 4 Sets 1.38"(35mm) Inner Width 75mm Length Steel M8 with Nut, Plate

The sourcing map U-Bolts are designed for versatility and strength. With a thread diameter of M8 and a length of 75mm, these bolts easily fit pipes and rods of 35mm diameter. The included hex nuts and plates enhance the product's usability, making it simple for you to secure components. Crafted from steel with a galvanised finish, these bolts resist rust and corrosion, ensuring long-lasting durability. This product is ideal for connecting boats, pipelines, and trailers, giving you peace of mind in your projects.

What We Like
Durable galvanised steel construction
Easy to install and secure
Resistant to rust and corrosion
Versatile for various applications
#TOP 10

SEUNMUK 6 Set Metal U Bolts for Piping

SEUNMUK
Silver
SEUNMUK 6 Set Metal U Bolts for Piping Cover
SEUNMUK 6 Set Metal Round U Bolt, M5 × 78mm U Bolt 304 Stainless Steel u Bolts, U Shape Bolts with Hex Nut and Spacer for Attaching Piping Conduit Cable Tube Brackets

The SEUNMUK U Bolts are designed for your convenience. With a size of M5 × 78mm, these bolts are perfect for securely attaching pipes and cables. Made from 304 stainless steel, they resist rust and deformation, ensuring durability in all weather conditions. Installation is straightforward, as each bolt comes with screws and spacers, allowing you to quickly connect them without complicated procedures. Their multifunctional use makes them ideal for various applications, from DIY projects to mechanical equipment connections.

What We Like
Durable 304 stainless steel
Easy and quick installation
Versatile for various uses
Resistant to rust
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are the different types of U-bolts?

What are the types of u bolts? U bolts are commonly classified by bending shape and can be divided into round U bolts, semi-round U bolt, and square U bolt. Each of the three models can be made of corrosion-resistant metals, such as carbon steel, 304 stainless steel, or 316 stainless steel.

2. What is the purpose of a U-bolt?

What Is a U-Bolt? When you break it down, a U-bolt is a bolt bent into the shape of the letter “u.” It's a curved bolt that features threads on each end. Because the bolt is curved, it fits nicely around pipes or tubing. That means U-bolts can secure piping or tubes to a support and work as a restraint.

Editor's Notes

During our round u-bolt research, we found 261 round u-bolt products and shortlisted 10 quality products. We collected and analyzed 5,340 customer reviews through our big data system to write the round u-bolts list. We found that most customers choose round u-bolts with an average price of £8.95.

The round u-bolts are available for purchase. We have researched hundreds of brands and picked the top brands of round u-bolts, including sourcing map, JZK, Jttxiu, muvuo, SEUNMUK. The seller of top 1 product has received honest feedback from 20,002 consumers with an average rating of 4.8.

Written by
Corey Phillips Avatar

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.