Customized bolt

Special Fasteners Flange Bolts Custom High Strength Non-Standard Iron Galvanized Carriage Bolts

carriage bolt, also known as a coach bolt or round head square neck bolt, is a type of threaded fastener with a distinctive domed head and a square or rectangular shoulder section just below the head. Carriage bolts are typically used to fasten wood or metal components together. Here is a description of a carriage bolt:

1. Construction: Carriage bolts are usually made of steel, stainless steel, or other alloy materials. They consist of three main parts: a round, domed head with a smooth, slightly curved top surface; a threaded shank that extends from the head; and a square or rectangular shoulder section located directly below the head.

2. Head Design: The domed head of a carriage bolt is typically larger in diameter than the threaded shank. It provides a smooth, finished appearance and offers a bearing surface when installed. The top surface of the head is usually flat or slightly rounded, making it suitable for applications where a flush or low-profile finish is desired.

3. Square Neck: One distinctive feature of a carriage bolt is the square or rectangular neck section just below the head. The square neck is designed to fit into a corresponding square hole or slot in the material being fastened, preventing the bolt from rotating during installation. This feature allows for easy one-person installation, as the bolt can be held in place while the nut is tightened on the threaded end.

4. Threaded Shank: The threaded shank of a carriage bolt extends from the head and is used to secure the bolt in place. The threads on the shank are typically coarse, allowing for quick and easy installation into pre-drilled or pre-tapped holes.

5. Applications: Carriage bolts are commonly used in woodworking, construction, and other applications where a secure joint is needed. They are frequently used to fasten wood components, such as building structures, fences, decks, and furniture. Carriage bolts can also be used in metal-to-metal applications, such as securing brackets or plates.

6. Installation: To install a carriage bolt, a hole is first drilled into the material being fastened. The square neck of the bolt is then inserted into the corresponding square hole or slot. The bolt is held in place while a wrench or socket is used to tighten a nut onto the threaded end of the bolt, securing the joint.

Carriage bolts are valued for their strength, ease of installation, and aesthetic appeal. Their unique design makes them suitable for applications where a secure and visually pleasing fastening solution is required.

Welcome to our company, based in Nanjing, Jiangsu, China. We pride ourselves on being a leading enterprise specializing in the engineering design, planned production, and comprehensive pre-and post-sales services for custom screws. Our state-of-the-art facility spans 6200 square meters, equipped with advanced multi-functional machinery, and boasts a dedicated team of approximately 80 employees committed to providing tailored screw solutions. At the core of our operations is our adherence to the ISO9001:2015 quality management system, ensuring the superior quality of each and every screw product.

Professional Engineering Team:
With a team boasting over 15 years of experience, our engineering professionals possess extensive expertise. They deeply understand customer requirements, offering insightful advice for customized screw solutions.

Custom Screw Design Services:
We provide extensive design services for customized screws, collaborating closely with clients to gain in-depth insights into application scenarios and requirements. This results in precision-designed screws tailored to specific needs, encompassing dimensions, shapes, materials, and performance.

Diverse Material Options:
Choose from a diverse selection of screw materials, covering various metals and alloys to meet the specific demands of different environments and applications. Additionally, we possess the capability to process screws from special materials.

Advanced Production Equipment:
Equipped with cutting-edge multi-functional production machinery, including cold and hot forging equipment, as well as composite processing machinery. Our expertise lies in designing automated equipment for the production of non-standard screws, ensuring high-quality, high-precision, and cost-effective custom screw production.

Stringent Quality Control:
We've established a comprehensive quality control system strictly adhering to ISO9001:2015 standards. Advanced testing methods, such as dimensional checks, material composition analysis, and mechanical performance testing across more than 10 dimensions, guarantee that custom screws meet both industry standards and customer expectations.

Flexible Production and Delivery Capability:
With 15 years of production experience, our production plans, coupled with partnerships with 89 various processing collaborators, allow for flexible production capabilities. We can meet customer demands for different quantities and specifications of custom screws, be it small-batch or large-scale production.

Prompt Communication Response:
Every customer is assigned a dedicated business representative, ensuring proactive communication. Regular progress reports are provided to ensure mutual understanding and enhance the smoothness of collaboration.

Our mission is to create value for both customers and employees. We look forward to establishing a long-term partnership with you, collectively driving the development of both parties.