The Best U-Bolts - We Kompare

Looking for the best U-Bolts?

Discover now our comparison of the best U-Bolts. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best U-Bolts are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the U-Bolts in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

SaleNo. 1

National Hardware N222-398 2192BC Square U Bolt in Zinc plated

Authorized Replacement for Stanley Hardware Stock #N222-398, #675-3/8" x 4" x 5" size
Designed for securing various products to rectangular wood and metal objects
If plates are required use National's #2191 plates
Nuts included
Manufactured from steel wire

No. 2

Moicstiy 4 Sets M6 U Bolts 1 Inch Wide, Round U-Bolts with Frame Plates, Nuts, and Washer, Zinc Plated Steel U Clamp for Trailers, Boats (25 mm x 70 mm

Package contents: The package includes 4 sets M6 round U-bolts (including round bolts, nuts, washers and frame plates), the total length of u-bolts is 25 mm(1 inch), the inner width is 70 mm(2-3/4 inch).
Material: This round bend U clamp is made of steel and galvanized surface, not easy to deformation, corrosion resistance and rust resistance, can be used outdoors for a long time.
Load capacity: U-shaped bolt of steel structure, using bending molding processing technology, high hardness, good tensile strength, high bearing capacity, can be used to fix pipes, plates, practicability.
Wide application: M6 U-bolt is used to fix or attach the locking parts to the pipe, wood, and more, suitable for the connection of ships, trailers, industrial steel structure pipes.
Easy installation: Just fix the U-bolt to the part to be fixed, then install the washers, and finally tighten the nuts at both ends to complete the installation, the installation is very convenient.

No. 3

National Hardware N222-562 DP2190BC U Bolt Zinc plated, 5/16" x 2-1/2" x 5"

National Hardware's 5/16"x2-1/2"x5" U Bolt is designed for fastening products to pipe, wood, etc.
Manufactured from steel wire for durability.
Plate and nuts included for easy installation.
For interior and exterior applications.
Manufactured from steel wire
Designed for fastening products to pipe, wood, etc
Suitable for automotive, plumbing and other home and industrial applications

No. 4

Buyers Products UB623520 20" Square Bend U-Bolt Kit, 4 Complete U Bolt Kits, 5/8" Bolt, 1/2" x 4 1/4" Tie Bars, Grade 5 Equivalent Hardware

Easily install truck boxes with this complete Grade 5 hardware kit, including forged steel tie bars for superior strength and durability
Choose from various lengths in the Buyers Products U-Bolt Kit with tie bars, perfect for securely connecting truck bodies to diverse truck chassis
Comprehensive kit includes four 5/8 in. square bend U-Bolts, eight 5/8 in. hex nuts, and split lock washers, ensuring reliable assembly
Built with 1/2 in. thick forged steel tie bars for robust support, ideal for securely mounting truck boxes and connecting bodies to truck chassis

No. 5

uxcell Round U-Bolts 4 Sets 0.79"(20mm) Inner Width 50mm Length Steel M6 with Nut, Plate, Washer

Thread Dia.: M6; Fit Rod Size: 20mm / 0.79"; Rod Diameter: 5.2mm / 0.2"; Total Length: 50mm / 1.97"
Hex Nut Size: 10 x 5mm / 0.39" x 0.2"(Hex Width*H); Frame Plate Size: 50 x 18 x 2mm / 1.97" x 0.71" x 0.08"(L*W*T)
Round Washers Size: 18 x 6 x 1mm / 0.71" x 0.24" x 0.04"(OD*ID*T); Package Content: 4 x U-Bolt, 8 x Nuts, 8 x Round Washers, 4 x Plates
Material: Steel construct u bolt, galvanized surface treatment, bending forming processing technology with great performance in antirust and corrosion resistance, high hardness and good tensile strength.
Application: U-bolt is used to fasten or attach locking components to pipes, wood, etc. Just insert and tighten the nuts at both ends. It is suitable for the connection of boats, pipelines, trailers, and industrial steel structure conduits.

No. 6

SRZTXU 2 Sets M8 Square U-Bolts,u-Bolts 2 inch Wide,304 Stainless Steel Square u-Bolts,with Nuts,Bolt Plate and washers (2, M8 x 50mm x 100mm)

U-Bolts SIZE：the square U bolts measures about M8 in diameter, about 52mm/2 inch in I.D width and about 100mm/3.9 inch in O.D length, The OD size of your project can be used to match the suitable U-bolt ID before ordering, please confirm the size before
What's included : you will get 2 pcs of U bolts 2 inch wide, plus 2 pcs of frame plates，4 pcs of washer and 4 pcs of nuts, 1 Pcs wrench，a complete set can meet your use and replacement
Materials : U-Bolts Made of 304 stainless steel, strong, have great performance in rust resistance, moisture resistance, and corrosion resistance
Broad utilization : the square U bolt clamp is practical and widely applied in various fields such as industry, manufacturing, maintenance, automotive industry, garment production, etc., which are ideal for fastening pipes, wood, trailers and more
Suggestions for use: it is recommended to use oil when installing this U bolt to prevent wear; Can use match manual wrench when fasteners nuts， Avoid using high-speed poweltools or impact tools to break the threads

SaleNo. 7

Dunzy 4 Pcs Square U Bolts Zinc Plated, Heavy Duty Carbon Steel U Bolt Industrial and Scientific Supplies for Boat Trailer Tube, Rectangular Wood and Metal Objects (3/8'' X 3'' X 7'')

Common Size: the square U bolts measures about 3/8 inch in diameter, 3 inch in width and 7 inch in length, proper for 3 x 3 inch square, suitable size can meet your different fastening needs, please check the size before ordering
Sufficient Quantity: you will receive 4 pack of square U bolts in zinc, including 4 pieces of u bolts, 4 pieces of frame plates and 8 pieces of nuts; Enough quantity satisfy your uses and replacements
Hard Material: the square U bolt adopts carbon steel material, and with zinc plated, sturdy and reliable, with nice rust and corrosion resistance, each bolt can withstand the weight, still perform well in rainy and wet environments
Wide Applications: the U bolts are widely suitable for various fields, such as industry, manufacturing, maintenance, the automotive sector, clothing production, etc., ideal for fastening tubes, woods, trailer, and so on
Tips: It is recommended to use lubricant during installing the U bolts to prevent wear and tear; Use a manual wrench or socket ratchet when installing nuts; Do not use high speed power tools or impact tools to tighten the nuts

No. 8

Therwen 16 Sets Round U Bolts Zinc Plated Steel Round Bend U Clamp with Nut Plate Washer (M6 x 40 mm X 90 mm)

Complete Package: this product includes 16 pieces of U bolts, 16 pieces of plates, 32 pieces of nuts, and 32 pieces of washers; You have everything you need to start fastening and securing immediately
Ideal Size: these M6 pipe clamps measure about 1.57 inches/ 40 mm in inner width, about 3.54 inches/ 90 mm in length, and about 0.2 inches/ 5.2 mm in diameter, you can apply these bolts to your projects conveniently
Accessories Size: our plate is about 2.76 x 0.79 x 0.08 inches/ 70 x 20 x 2 mm (L x W x T), hexagonal nut about 0.39 x 0.2 inches/ 10 x 5 mm (W x H), and the round washer is about 0.71 x 0.24 x 0.04 inches/ 18 x 6 x 1 mm (OD x ID x T), All the sizes are nice for U clamp
Resistant to Rust: our U bolts are made of steel and have a galvanized surface, making them resistant to rust, corrosion, and wear; The nuts and washers are also made of durable materials that ensure long term use
Versatile Application: our U bends can be applied to fasten or attach locking parts to pipes, wood, and other materials; This product is ideal for DIY enthusiasts, contractors, and anyone who needs reliable and secure fastening

No. 9

4Pack Square U-Bolts 4-1/2"(115mm) Inner Width, 304 Stainless Steel U Bolts M10 with Washers & Nuts for Replacement Parts and Accessories for Ski Boat, Fishing Boat or Sailboat Trailer

U-Bolts SIZE: Thread Dia. : M10; Fit Square Rod Size: 115mm / 4.5"; Rod Diameter: 10mm / 0.4"; Total Length: 175mm / 7"；Hex Nut: 18mm / 0.7" (Hex Width); Frame Plate: 180 x 25 x 2mm / 7" x 1" x 0.08"(L*W*T); Washer ID: 10mm / 0.4" OD
Square U-Bolts Material: Made of 304 stainless steel, strong and durable, have great performance in rust resistance, moisture resistance, and corrosion resistance.
Feature: The surface without burr and thread good grip, u clamp still perform well in rainy and humid seaside environment.
Application: Square U-Bolt Used on fix or connect the locked parts to rectangular wood and metal objects, such as cars, RVs, sailboat trailers, pipe, tube, plumbing and other Industrial Applications.
Package Content: 4 x U-Bolt, 8 x Nuts, 8 x Round Washers, 4 x Plates.

SaleNo. 10

SENKEYFE 4 Pcs 304 Stainless Steel Square U-Bolts with Washers & Nuts, 1/2"-13 Thread Leaf Spring U Bolts, 1/2" Dx3-1/16" Wx7-5/16" L Trailer U Bolts Marine Kit for Replacement Parts Automobiles Boat

【Size】Thread length: 1/2"-13 , U-bolt size: 1/2" D x 3-1/16" W x 7-5/16" L .Our u-bolts are available in a variety of sizes, it is recommended that you confirm the size matching before purchasing
【Threaded Nut】Stainless steel hexagonal nut × 8, lock washer × 8, flat washer × 8.Each bolt can withstand 100 LBS and can be fully tightened,high hardness and good tensile strength.The nut has a non-slip washer design to prevent parts from loosening,provides a firm and stable grip
【Sturdy & Durable】Square u-bolts are made of high-quality material 304 stainless steel, and smooth surface without burrs,with great performance in antirust and corrosion resistance, it can be used without fear of being affected by harsh conditions
【How to Use】Ensuring thread leaf spring u bolts is in the correct position and remains stable, install the washers from below,then use a hand wrench or socket ratchet to tighten the nut.It is recommended to use lubricant during installation
【Wide Applications】 Trailer u bolts marine kit is applied to fix or connect the locked parts to other objects in a variety of scenarios such as pipelines and tubing, gardening and construction, cars and boats, bridges and tunnels, and other home remodelling and industrial applications

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Last update on 2025-06-15 / Affiliate links / Images from Amazon Product Advertising API

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