Carriage bolts

Custom fasteners Manufacturer

Brass Stainless steel Carriage Bolts

Type: Stainless steel Carriage bolts, carriage bolts, stainless steel bolts

Material: Stainless steel

Finish: Passivated


Standard: Inches, Metric


Stainless steel carriage bolts are divided into large round head carriage bolts and small round head carriage bolts. Carriage bolts, a type of fastener consisting of a head and a screw (a cylinder with external threads), need to be matched with a nut to fasten two parts with through holes.

Generally speaking, bolts are used to connect two objects, usually through holes, and need to be used in conjunction with nuts, and a single one does not work for connection. The tool is generally a wrench. The head is mostly hexagonal, generally larger. The carriage bolts are used in the grooves, and the square neck is stuck in the grooves during installation, which can prevent the bolts from rotating, and the carriage bolts can move in parallel in the grooves. Since the head of the carriage bolt is round, there is no design of available power tools such as cross recess or inner hexagon, which can also play a role in preventing theft during the actual connection process.

We also called carriage bolts coach bolts and round head square neck bolts a form of bolt used to fasten metal to metal or metal to wood. And the head of a carriage bolt usually is a shallow dome, the shank has no threads and its diameter equals the side of the square cross-section. Carriage Bolts are designed for use with Nuts and generally Washers, typically a Washer is not used on the head side as this prevents the square underside of the head from functioning properly.

The materials are normally stainless steel A2 A4, carbon steel, brass, and aluminum. like stainless steel carriage bolts, brass carriage bolts,aluminum carriage bolts. depending on customers’ requirements.

Other Types Of Carriage Bolts

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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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