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Zinc-Plated Coarse Thread Carriage Bolt

Zinc-Plated Coarse Thread Carriage Bolt adopts galvanizing process, which can effectively prevent rust and provide beautiful and consistent finishes.

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As a manufacturer located in China, we are proud to present our high-quality Zinc-Plated Coarse Thread Carriage Bolt. We have manufactured this product with utmost precision and care to ensure that it meets the requirements and demands of our customers. Our carriage bolt is made of strong and durable material that can withstand even the toughest conditions making it ideal for both indoor and outdoor use. We offer the Zinc-Plated Coarse Thread Carriage Bolt in various sizes to fit the needs and requirements of our customers no matter what size their project may be.


Strong and Durable Material


Our Zinc-Plated Coarse Thread Carriage Bolt is made from high-quality materials that give it strength and durability. These bolts are made from carbon steel which is known for its strength and toughness. The zinc plating makes the bolt corrosion resistant so it can withstand even the toughest weather conditions. This makes it a cost-effective solution for long-term use in any setting.


Easy to Use


We have designed our Zinc-Plated Coarse Thread Carriage Bolt to be user-friendly. It is easy to install with a standard wrench and can be used for a variety of applications including construction, machinery, and automobiles. The coarse thread design allows the bolt to provide a more efficient grip to increase the stability of the joint. The flat and dome-shaped head makes it easy to tighten and loosen with a wrench.


Variety of Sizes


We understand that each project may require a different size of carriage bolt. That is why we offer our Zinc-Plated Coarse Thread Carriage Bolt in various sizes. Sizes range from 3/16 inch diameter to 3/4 inch diameter, meeting the needs of any project no matter how big or small. We also offer different lengths of the bolt to give our customers the flexibility to select the right size to fit their project.


Cost-Effective Solution


Our Zinc-Plated Coarse Thread Carriage Bolt is a cost-effective alternative to other fastener options. Its strength and durability make it an ideal option for long-term use with minimal maintenance required. Its corrosion-resistant zinc plating increases its lifespan, reducing the need for frequent replacement. This results in lower costs and helps to maximize your resources and budget.


Wide Range of Applications


Our Zinc-Plated Coarse Thread Carriage Bolt is a versatile product that can be used in various applications. It is ideal for construction projects, such as framing, fastening beams and trusses, and attaching brackets. In machinery, it is commonly used to secure and assemble components. In automobiles, it is used to attach various parts including doors, windows, and bumpers.




Our Zinc-Plated Coarse Thread Carriage Bolt is a top-quality product designed to meet the needs and requirements of our customers. Its durability, strength, and versatility make it an ideal option for a wide range of applications. We offer a variety of sizes to fit your project and budget, and our cost-effective solution ensures that you get the maximum value for your investment. We are committed to our customers' satisfaction and we guarantee the best quality products and service. We look forward to doing business with you.



Zinc-Plated Coarse Thread Carriage Bolts are galvanized to prevent rust and provide a beautiful and consistent finish. These little screws are especially suitable for 3D printing DIY and RC car enthusiasts. These black galvanized machined screws are non-greasy and rust-resistant better than other painted screws, so they won't get your hands or DIY items dirty.

The head of the carriage bolt has a rounded design, we can also provide button head, truss head, cheese head and other models. Its square neck is conducive to installation and fixation, especially when applied to mechanical equipment, it can ensure that it is not easy to break. Thanks to the galvanized surface, these bolts have excellent corrosion resistance, durability and rust resistance. In addition, we can also provide you with different surface treatment processes according to your different needs.

Product Details

● Product Type: Carbon Steel screws

● Product Name: Zinc-Plated Coarse Thread Carriage Bolt

● Size: M5-M14; #0-#12;1/4-9/16;ST2.9-ST9.5; Special size can be enquired and supported

● Product Executive Standards: ANSI, DIN, ISO, GB; or Per customer’s drawing

● System of Measurement: Metric/Inch

● Head type: Button Head; Truss Head; Round Head; Cheese Head; etc.

● Material: Low carbon steel / medium carbon steel / alloy steel

● Grade: Quenching and tempering heat treatment—4.6/4.8/5.6/5.8/6.8/8.8/9.8/10.9/12.9/Grade 5/ Grade 8;

Case harden-- Surface hardness min450HV

core hardness 270 ~ 390HV/290~370HV

● Support non-standard customization

● Country of Origin: China

Customization process


Our advantage

1. We have nearly 20 years of experience in hardware processing.
2. We offer OEM custom service, produce and process products according to your drawings and requirement.

3. All kinds of surface treatment available, such as anodizing, power coating, painting, polishing, electrophoresis, plating. etc.

4. We have a professional sales team to provide you quick and warm service throughout the whole process.



Why choose us?

  • Our company is known for providing the best after-sales service and technical support for our Bolts and Screws products.
  • We will continue advancing and developing with the time, keeping on innovation and consistently bringing the existing and potential customers satisfactory products and services.
  • We are dedicated to providing our customers with the best value for their money with our Bolts and Screws products.
  • We have a strong team spirit and rich management experience, professional, efficient, quality assurance.
  • Our company has a reputation for producing Bolts and Screws products that are reliable, durable, and efficient.
  • We constantly bring forth new Zinc-Plated Coarse Thread Carriage Bolt every year, not only from the product technology, design improvement and innovation, and product packaging design style, to meet the needs of consumers in all aspects.
  • We take pride in producing reliable and durable Bolts and Screws products for various industries.
  • We have a solid foundation of scientific and technological personnel, and have always been committed to product innovation, so that the product maintains a strong market share.
  • We are a one-stop-shop for all your Bolts and Screws product needs.
  • Our Zinc-Plated Coarse Thread Carriage Bolt sets the advantages and cost performance of similar products at home and abroad, and is gradually widely accepted by consumers.

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