Description
Product Overview
These 4 sets of square bend U bolts are designed for secure mounting applications in marine, automotive, and industrial environments. Made from durable 304 stainless steel, they resist rust and corrosion even in humid or high-temperature conditions. Each set includes 4 U bolts, 4 frame plates, and 8 hex nuts, compatible with square wooden, steel pipes, beams, and shafts up to 2″ x 2″. The bolts measure 2″ wide by 4.33″ long with a 50 mm thread length, and the frame plates are 105 × 25 mm. Ideal for trailers, boats, bridges, and railings, these U bolts offer reliable performance and easy installation.
Usage
These U bolts are widely used in marine and automotive applications, including boat and trailer mounting, structural support in buildings, and railings. They are suitable for DIY enthusiasts, mechanics, and professionals working on trailers, sailboats, ski boats, and industrial equipment. The stainless steel construction ensures long-term durability in saltwater, coastal, or high-moisture environments. Installation is straightforward: position the U bolt, attach the frame plate, and secure with the included hex nuts using a wrench.

Why Choose Us
Our U bolts are manufactured from premium 304 stainless steel, ensuring resistance to rust, corrosion, and wear. The clear, neat threads prevent slipping during installation, and the smooth surface enhances durability. Each set includes all necessary components for quick and secure mounting. The product is designed for easy installation without requiring specialized tools. We offer reliable customer support and consistent quality assurance to ensure your satisfaction.
Key Features
- High-quality 304 stainless steel construction resists rust and corrosion in marine and industrial environments.
- Accurate dimensions: 2″ wide x 4.33″ long with 50 mm thread length for precise fitment.
- Includes 4 U bolts, 4 frame plates, and 8 hex nuts for complete mounting solutions.
- Easy installation with simple assembly: place the bolt, attach the frame plate, and tighten with a wrench.
- Wide compatibility with square wooden, steel pipes, beams, and shafts up to 2″ x 2″ for versatile use.
- Customer support available for installation guidance and product inquiries.
FAQ
What materials are these U bolts made of?
These U bolts are made from 304 stainless steel, which is highly resistant to rust and corrosion, making them ideal for marine, automotive, and industrial applications.
What is the size of the U bolts?
The U bolts measure 2″ wide by 4.33″ long with a 50 mm thread length. The frame plates are 105 × 25 mm, and the hex nuts have a 15 mm diameter.
Are these bolts suitable for marine use?
Yes, these bolts are specifically designed for marine environments. The 304 stainless steel construction ensures long-term durability even in saltwater and high-moisture conditions.
How many pieces are included in each set?
Each set includes 4 U bolts, 4 frame plates, and 8 hex nuts, providing a complete mounting solution for square components.
Can these bolts be used for boat trailers?
Yes, these U bolts are ideal for boat and trailer mounting. They are compatible with square wooden, steel pipes, beams, and shafts up to 2″ x 2″ and are designed for easy installation.





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