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Square Neck Carriage Bolts

Square Neck Carriage Bolts are designed with round head and square neck. We can customize different materials for you according to your needs.

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If you're looking for a reliable and efficient solution for fastening, Square Neck Carriage Bolts may be just what you need. These bolts are typically used in applications where there is a need for a sturdy yet unobtrusive fastener. They are widely used in woodworking, construction, and automotive applications, and can also be used for general-purpose applications. With the growing demand for quality fasteners, manufacturers are racing to come up with the most reliable and durable products. However, not all of these products meet the required standards of quality.


At our company, we take pride in producing high-quality products that exceed industry standards. Our Square Neck Carriage Bolts are no exception. We utilize advanced techniques in our manufacturing process to ensure that our products meet or exceed the required specifications. This makes our bolts the ideal choice for merchants who are looking for high-quality fasteners to meet their customers' needs.




Our Square Neck Carriage Bolts are made from top-quality materials that are carefully selected to ensure that they have excellent strength and durability. They are also hot-dipped galvanized for added protection against rust and corrosion. The bolts are designed with a square neck that ensures that they remain firmly in place after installation.


The square neck design of our bolts ensures that they remain securely in place. The bolts can be used in a variety of applications, including areas like decks, fences, and docks. This makes them an ideal choice for both industrial and residential use.


Our bolts are available in various sizes, including 1/4", 5/16", and 3/8". They are also available in standard sizes and can be ordered in bulk or in individual quantities.


Features of our bolts:


1. Durability:


Our Square Neck Carriage Bolts are made from robust and high-grade materials. These materials ensure that our bolts are sturdy and can withstand harsh conditions, such as exposure to weather elements. We also use advanced manufacturing techniques that produce bolts that are rust-resistant and have an extended lifespan.


2. Ease of use:


Our bolts are designed to be easy to use. They can be installed easily and quickly with minimal effort. This makes them an ideal choice for installations in areas where time is of the essence.


3. Wide range of applications:


Our Square Neck Carriage Bolts are versatile and can be used in a broad range of applications. They are suitable for use in woodworking projects, construction sites, automotive applications, and other general-purpose uses.


4. Cost-effective:


Our bolts are not only durable and reliable but are also cost-effective. They are competitively priced, making them an affordable option for both industrial and residential use.




At our company, we are committed to providing our merchants with high-quality products that meet or exceed industry standards. Our Square Neck Carriage Bolts are durable, easy to use, versatile, and affordable. They are ideal for use in various applications, making them an excellent choice for merchants looking for an efficient and reliable fastening solution. Contact us to place your order today and experience the quality of our products.



Square Neck Carriage Bolts are designed with round head and square neck. It is manufactured with a precision and fully standard forging process and has also undergone rigorous quality testing. The product has the advantages of acid and alkali resistance, corrosion resistance and oxidation resistance, so it is suitable for indoor and outdoor use, and it will not rust even in a humid environment.

The compact structure of the thread and the uniform force make it less prone to deformation and slipping during rolling and installation. Thanks to the secure engagement of the threads, these bolts can be used in high-stress applications such as valves, pumps, motors and automotive suspension systems. In addition, our materials are available in mild steel, stainless steel, copper and copper alloys, aluminum and aluminum alloys. These materials all have excellent rust and oxidation resistance to ensure long-term use.

Product details

● Product Type: Bolts/Screws

● Product Name: Square Neck Carriage Bolts

● Size: M3-M14; #4-#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; Pan Head; Truss Head; Round Head; Cheese Head; etc.

● Material: Low carbon steel / medium carbon steel / high carbon steel / alloy steel/Stainless steel/copper & copper alloy/Alumium & Aumium Alloy/etc.

● 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

Our service



1. Q:Are you a manufacturer, trading company or a third party?

A:We are a manufacturer, and we have builded up our company since 2004.

2. Q: Why did you choose us?

A: We are a high-tech enterprise and have obtained iatf16949 & ISO14001 & 45001 & ISO9001 certification.

3. Q: what terms of payment do you accept?

A: telegraphic transfer, letter of credit, Western Union remittance, Huitong or PayPal are welcome.



Why choose us?

  • We are committed to continuous improvement and innovation to ensure that our Bolts and Screws products remain at the forefront of the industry.
  • Our group will "maintain the courage of innovation, the courage to be the first, and the vigorous vitality", add power and vitality with innovation, create more high-quality products and services, and innovate the quality of life of the people.
  • We supply Bolts and Screws products to various distributors, wholesalers, and retailers worldwide.
  • We pursue the ultimate quality and perfect product. Everything is based on high-quality materials and technology.
  • We consistently strive to deliver superior Bolts and Screws products and exceptional customer service.
  • The company's considerate after-sales service is the company's commitment to reassure users, and perfect management is the basis for our survival. We have been in line with the market for a long time, producing high-quality products that can adapt to the market, and are deeply welcomed by customers.
  • Our team of experts ensures that our Bolts and Screws products are produced with the latest technology and machinery.
  • The high-intensity brand awareness of consumers is conducive to the formation of brand loyalty. Our company constantly strengthens the brand awareness of consumers to establish and maintain brand loyalty.
  • Our Bolts and Screws products are highly customizable to meet your unique specifications and requirements.
  • We have a team with strong technical strength, high professional quality and rich practical experience to provide our customers with excellent Square Neck Carriage Bolts.

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