U Bolts

Custom Carriage Bolts Manufacturer

Custom Stainless steel Square U Bolts

Type: Stainless steel Square U Bolts , Square U bolts, custom U bolts

Material: Stainless steel

Finish: Passivated


Standard: Inches, Metric


Stainless steel Square U bolts are a non-standard part. It is named for its U-shaped. There are threads at both ends that can be combined with nuts. It is mainly used to fix tubular objects such as water pipes or sheets. things like leaf springs of cars.

Stainless steel U-bolts are generally used on trucks, and they are used to stabilize the chassis and frame of the car. For example, leaf springs are connected by U-shaped bolts. Stainless steel U-bolts are widely used, mainly used in construction installation, mechanical parts connection, vehicles and ships, bridges, tunnels, railways, etc.

The main shapes of stainless steel U-bolts are semicircle, square right angle, triangle, oblique triangle, and so on. can be long or small.

U-bolt material characteristics: Material properties, density, bending strength, impact toughness, compressive strength, elastic modulus, tensile strength, temperature resistance, and color are determined according to the use environment. Commonly used materials are carbon steel Q235 Q345B alloy steel stainless steel and so on. Among them, the stainless steel materials are 201 304, 321, 304L, 316, 316L

Other Types Of Carriage Bolts

Are You Looking For Custom Screw Manufacturer?

As a 20-year industry experience manufacturer with a factory equipped with precision machines, we can provide, from consultation to production, a one-stop solution for you. For an accurate quotation, you need to tell us the following information:


Please tell us the specific details, like what is material and finish do you, and the fastener size, if you have drawings or pictures, please send them to us


Normally small order quantities are acceptable, while large quantities can help us to lower the cost and get you a more competitive price.


Tell us your application or detailed information for your projects. We can offer you the best choice, meanwhile, our engineers can give you more suggestions under your budget.

What We Can Offer You..

Best Quality

We have rich experience in the manufacture, design, and application of custom fasteners, and served more than 10000 customers worldwide

Competitive Price
we have an absolute advantage in the cost of raw materials. Under the same quality, our price is generally 10%-30% lower than the market.

With more than 22 years, we already have completed the control system and test equipment, we can provide all tests you need


Any feedback will be replied to within 24hours, We provide a 3-5 years guarantees policy. And all costs by us will be on our account.

Fast delivery

If you need urgently, we can deliver samples within 8hours. Bulk order can be within one week

Why Choice us

About Us

Shenzhen Heat Hardware Co., Ltd is a leading custom screw manufacturer in China founded in 2000 years. We are specializing in custom screws, security screws, Sems screws, Chicago Screws, Weld Screws, Long screws, Micro Screws, Thumb Screws, Set Screws, Custom bolts, carriage bolts, nuts, and other custom Fasteners. With more than 20years of industry experience. We have serviced over 20000customers including the aerospace industry, automotive industry, electronics, mechanical and electrical products, robots, the Medical industry, communications industry, Outdoor sports products, smart appliances, etc. we can provide one-stop fastener customized service for you no matter what kind of custom fastener you need.

Production Process

We have a variety of production requirements of equipment, can meet any customized demands. can provide comprehensive fastener solutions. Anything you need can make by Heatscrew.

Material Preparation

Threading Rolling

Automatic Lathe

CNC Process

Final Test

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