DIN603 Coach Bolts Carriage Bolts

Carriage Bolt Product Describsion

There are many types of raw materials for carriage bolts, and our main production is based on metal. For example, carbon steel, stainless steel, brass, etc.

Different materials have different advantages and disadvantages. You can refer to your load requirements, usage environment, etc., for ordering.

If you’re unsure about which material, strength, or surface treatment you need for your fastener products, please don’t hesitate to contact us. We’ll be happy to recommend the most suitable options for you!

Here are some common materials for these bolts:

Common carbon steel carriage bolts come in various strength grades and surface treatments.

The strength grade of hex bolts primarily depends on the inherent properties of the raw materials and the manufacturing process.

Common strength grades for carbon steel carriage bolts include: 4.8, 5.8, 6.8, 8.8, 10.9, 12.9.

For stainless steel hex bolts, common strength grades include: A2-70, A4-70, A4-80.

Of course, there are also higher strength products available, although they are less common.

Common surface treatments for these bolts include black oxide, galvanization, hot-dip galvanization, Dacromet, etc.

Carriage Bolt Production Process

Carriage bolt manufacturing processes are typical in fastener production, especially the method of cold heading:
Annealing of raw materials – pickling – drawing – forming – grinding – heat treatment – surface treatment – classification – packaging – shipping

The rough processing flowchart is as follows::

Carriage Bolt Application fields

Carriage bolts, also known as coach bolts or round head square neck bolts, serve various purposes across different industries due to their unique design and characteristics. Here’s a breakdown of their common uses:

1. Woodworking: These bolts are commonly used in woodworking projects for securing wooden components together, such as attaching legs to tables, framing, or constructing outdoor furniture.
2. Construction: They find application in construction for fastening wood to metal or wood to wood connections, such as securing wooden beams or rafters to metal brackets or plates.
3. Fencing and Decking: These bolts are used in fencing and decking projects for attaching rails, posts, and other structural elements, providing a secure and stable connection.
4. Door and Window Hardware: They are employed in the installation of doors and windows, securing hinges, handles, and other hardware to wooden frames or structures.
5. Automotive Industry: These bolts are utilized in automotive applications for securing various components, such as attaching seats, brackets, or body panels to vehicle frames or chassis.
6. Playground Equipment: They find application in assembling playground equipment, securing components such as swings, slides, and climbing frames to wooden structures.
7. Boat Building: These bolts are used in boat construction for securing wooden planks, frames, and other structural elements, providing strong and reliable connections in marine environments.
8. Outdoor Structures: They are employed in building outdoor structures such as pergolas, gazebos, and trellises, providing a secure connection between wooden beams, posts, and cross members.
9. Utility Poles and Structures: These bolts are used in the construction and maintenance of utility poles, securing cross arms, insulators, and other equipment to wooden poles.
10. Farm and Agricultural Equipment: They find application in agricultural machinery and equipment for securing components such as blades, brackets, or handles to wooden frames or structures.
11. Lighting Fixtures: These bolts are utilized in outdoor lighting fixtures, securing fixtures to wooden posts or structures, providing a stable and durable mounting solution.
12. DIY and Home Improvement Projects: They are commonly used in DIY and home improvement projects for various applications, including furniture assembly, shelving installation, and general repairs.

These examples illustrate the versatility and utility of carriage bolts across a wide range of industries and applications, providing secure and reliable fastening solutions for various structures and components.