Heavy-Duty Carriage Bolts | Anti-Corrosion & Custom Sizes

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Our Carriage Bolt for Wood – Secure for Wooden Structures

As a leading hardware manufacturer, we produce carriage bolts for wood designed specifically for fastening wooden structures (decks, fences, wooden furniture, sheds). The square neck embeds into wood to prevent spinning, and the threaded shank provides strong hold in lumber—even with seasonal wood movement. Made from corrosion-resistant materials (galvanized, stainless steel), they resist rot and moisture, critical for wooden outdoor projects. These bolts ensure long-lasting stability for all wood-based builds.
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Why choose us?

High - Strength Carriage Bolts for Heavy - Duty Projects

Our carriage bolts are engineered for heavy - duty applications in construction, machinery, and outdoor projects. The square neck design prevents the bolt from rotating during installation, making the fastening process more efficient. Made from high - strength steel, they can withstand significant loads and vibrations. We offer a variety of sizes and finishes, including galvanized and stainless steel options for enhanced corrosion resistance. With our extensive industry knowledge and professional manufacturing process, you can rely on our carriage bolts for your most demanding projects.

Size - Customizable Carriage Bolts for Specific Projects

We recognize that not all projects can be completed with standard - sized carriage bolts. That's why we offer size - customizable carriage bolts. Our professional team can work with you to determine the exact length, diameter, and thread pitch you need for your specific project. Whether it's a unique construction project or a custom - made piece of machinery, our customizable carriage bolts can provide the perfect fit. With our advanced manufacturing capabilities and 30 - year history, we can produce high - quality, customized carriage bolts efficiently.

Anti - Corrosion Coated Carriage Bolts for Outdoor Use

For outdoor projects, our anti - corrosion coated carriage bolts are a great choice. These bolts are coated with a special layer that protects them from rust and corrosion caused by rain, snow, and humidity. Whether you're building a deck, a fence, or an outdoor furniture set, our anti - corrosion carriage bolts will maintain their strength and appearance over time. With our 30 - year experience in hardware manufacturing, we ensure that the coating is evenly applied and adheres firmly, providing long - lasting protection against the elements.

Related products

Carriage bolts for wood are specially designed fasteners that provide a secure and stable connection when working with wooden materials. These bolts are characterized by their square - shaped shoulder under the head, which prevents rotation when tightened, making them ideal for wood - to - wood and wood - to - metal connections. One of the main advantages of using carriage bolts for wood is their ability to create a strong and durable connection. The square shoulder of the bolt digs into the wood, providing a firm grip that resists loosening over time. This is particularly important in applications where the wooden structure will be subject to vibrations or movement, such as in the construction of a wooden deck or a piece of furniture. Carriage bolts for wood are available in a variety of sizes and materials to meet different application requirements. Steel carriage bolts are a cost - effective option for general - purpose woodworking projects, while stainless steel bolts offer excellent corrosion resistance, making them suitable for outdoor applications where the wood will be exposed to the elements. Brass carriage bolts can be used for decorative woodworking projects, adding an attractive golden color to the finished piece. When installing carriage bolts for wood, it is important to pre - drill holes in the wood to the correct size. The diameter of the hole should be slightly larger than the diameter of the carriage bolt's shank but smaller than the head and the square shoulder. This allows the bolt to fit easily into the hole while still providing a secure connection. After drilling the holes, insert the carriage bolts through the holes and tighten the appropriate nuts, such as carriage nuts or hex nuts, using a wrench or socket set. To enhance the performance of carriage bolts for wood, it is recommended to use wood glue in conjunction with the bolts. The wood glue fills any gaps between the wood and the bolt, providing additional strength and stability to the connection. If you need more information about carriage bolts for wood or would like assistance in selecting the right bolts for your woodworking project, please contact us.

Frequently Asked Questions

Are Zhongsheng’s cotter pins compatible with standard fasteners?

Yes, our cotter pins match standard bolts/nuts. Made of high-strength steel, they prevent loosening under vibration, with consistent sizing via strict quality control, suitable for machinery/automotive/DIY projects.
Yes, our rubber washers use elastomers (silicone, nitrile) resisting high/low temps, chemicals, and moisture. They seal leak-proof for plumbing/automotive/industrial use, with customization available for specific conditions.
Our screw assortment has various screws (wood, sheet metal, machine) in sizes/materials, packed in organized plastic boxes. It covers most DIY needs (furniture, repairs), saving time on sourcing individual screws.
Our felt pads prevent scratches, reduce noise, and anti-slip. Self-adhesive for easy installation, fitting furniture feet (chairs, tables), with thicknesses for heavy/light use, durable for long protection.

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Customer Reviews

Linda Scott
Reliable Carriage Bolts for Gate Installation

I installed a new gate in my backyard, and these carriage bolts worked perfectly. The bolts are sturdy, and they hold the gate hinges securely, so the gate doesn’t sag. The threads are smooth, making it easy to tighten the nuts, and the finish matches the gate’s hardware. The PP box packaging was durable, keeping the bolts safe during installation. The price is affordable, and the quality is as good as more expensive brands. I recommend them for any gate or fence project.

Charles Adams
Custom Carriage Bolts for Industrial Equipment

Our factory needed custom-sized carriage bolts for a piece of industrial equipment, and Zhongsheng Hardware delivered exactly what we needed. The bolts are made of high-quality materials, and they fit the equipment perfectly. The professional team worked closely with us to ensure the specifications were correct, and the delivery was on time. The bolts have held up under heavy use, and they’ve improved the equipment’s performance. Great customization service and high-quality products.

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Why Our Carriage Bolts? Heavy-Duty & Weather-Resistant

Why Our Carriage Bolts? Heavy-Duty & Weather-Resistant

Ideal for decks, fences, or machinery, our carriage bolts have anti-spin necks, corrosion-resistant coatings, and come in plastic-absorbing boxes. We offer quality at good prices and custom sizes. With 30 years of experience, we’re trusted by foreign firms. Contact us now for more on your heavy-duty needs.