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

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Our Torque Washers for Carriage Bolts – Secure for High-Torque Fastening

As a DIY hardware expert, we produce torque washers for carriage bolts designed to distribute torque evenly and prevent bolt loosening in high-stress applications (construction, machinery, outdoor structures). Made from thick, high-strength steel, they fit between the carriage bolt head and surface, reducing pressure on materials and enhancing fastening stability. Compatible with standard carriage bolts, these washers ensure consistent torque application, extending bolt lifespan and improving overall assembly strength.
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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

Torque washers for carriage bolts are specialized components designed to enhance the performance and reliability of carriage bolt connections by providing a more consistent and controlled tightening force. These washers are typically made of metal, such as steel or stainless steel, and feature a unique design that helps distribute the load evenly and prevent damage to the materials being fastened. The main function of torque washers is to act as a bearing surface between the head of the carriage bolt and the material being fastened. When a torque wrench is used to tighten the nut on the carriage bolt, the torque washer helps ensure that the force is applied evenly, reducing the risk of over - tightening or under - tightening. Over - tightening can cause damage to the materials, such as cracking or stripping of the threads, while under - tightening can result in a loose connection that may fail under load. In applications where precise torque control is essential, such as in the assembly of machinery or automotive components, torque washers for carriage bolts are indispensable. For example, when installing a carriage bolt to secure a motor mount in a vehicle, using a torque washer can help ensure that the bolt is tightened to the correct torque specification, providing a secure and reliable connection that will withstand the vibrations and stresses of operation. Torque washers also help prevent the rotation of the carriage bolt head during tightening. The unique design of the washer, often with teeth or serrations on one side, grips the surface of the material, preventing the bolt head from spinning and making it easier to achieve the desired torque. When selecting torque washers for carriage bolts, it is important to choose the right size and material to match the carriage bolt and the application. The inner diameter of the washer should be slightly larger than the diameter of the carriage bolt, and the outer diameter should be appropriate for the material being fastened. If you need more information about torque washers for carriage bolts or would like assistance in selecting the right ones for your project, please contact us.

Frequently Asked Questions

What materials are Zhongsheng’s copper washers made of?

Our copper washers use high-purity copper, offering good conductivity and corrosion resistance. Ideal for plumbing (sealing) and electrical connections, they distribute pressure evenly, lasting long per our 30-year quality standard.
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.
Yes, our cable ties are versatile. UV-resistant for outdoor (garden cables), reusable/flame-retardant for indoor (electrical). Sizes fit different bundle weights, meeting home/industrial needs.
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

Joseph Wright
Heavy-Duty Carriage Bolts for Deck Construction

I built a large deck in my backyard, and these carriage bolts were essential. They’re made of high-strength steel, so they hold the deck framing together securely. The square neck prevents the bolts from spinning during installation, making the process much easier. The galvanized finish resists rust, which is important for outdoor use. The PVC Blister box had all the bolts I needed, and the professional team at Zhongsheng Hardware helped me calculate the right quantity. The deck is solid and stable— I’m very happy with these bolts.

Susan King
Easy-to-Install Carriage Bolts for Furniture Assembly

I used these carriage bolts to assemble a heavy wooden workbench, and they were easy to install. The rounded head gives the workbench a clean look, and the square neck keeps the bolts in place while tightening the nuts. The bolts are strong, and the workbench is very stable. The PS plastic-absorbing box had all the sizes I needed, and the instructions were simple to follow. For a DIY furniture project, these bolts are perfect— strong, easy to use, and affordable.

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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.