Large Head Carriage Bolts
Standard: DIN 603
Thread Type: Coarse Thread / Partial Thread
Commodity: Large Head Carriage Bolts
Also Named: Round Head Bolt With Square Neck
Material: Carbon Steel
Property Class: 4.6、4.8、8.8
Diameter: M5、M6、M8、M10、M12、M16、M20
Finish: Plain, Black, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated
Head Type: Large Round Head
Alternative Standard: ANSI/ASME B 18.5.2.2M、ASME B 18.5、、ANSI/ASME B 18.5.2.3M、JIS B 1171
Lead Time: 30 to 60 days
Product Introduction
AYA Fasteners (Hebei) Co., Ltd. is one of the most experienced manufacturers and suppliers of large head carriage bolts in China. Please feel free to buy high quality large head carriage bolts made in China here from our factory. For price consultation, contact us.

As a global supplier of customized fastening solutions, AYA's service process is also as close to customers as AYA's products. From describing needs to follow-up services, AYA will promptly and spare no effort to help customers solve any fastening problems that arise, to eliminate the concern of customers.
Product Description
Product Name | Large Head Carriage Bolts |
Also Named | Round Head Bolt With Square Neck |
Material | Carbon Steel |
Standard | DIN 603 |
Property Class | 4.6、4.8、8.8 |
Diameter | M5、M6、M8、M10、M12、M16、M20 |
Finish | Plain, Black, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated |
Head Type | Large Round Head |
Thread Type | Coarse Thread / Partial Thread |
Dimensions Table


Product Details

Product Advantages

Advantages Of Large Head Carriage Bolts
1. Large head carriage bolts are simple to mount and apply in different settings for securing applications.
2. It's always a preferential choice for the connection of wooden items.
3. It has dome-shaped heads that provide an excellent look to match various structures or building and construction designs.
4. The large head provides a broader surface to distribute the load.
5. AYA has been in this field for more than ten years and obtained whole experience in manufacturing high-quality products to meet your fastening requirements.
6. AYA has over 20 overseas distribution centers to deliver our fasteners promptly and globally.
Quality Inspection

Every link in the production will be supervised by quality control personnel to ensure that the final product meets customer expectations.
Sophisticated testing instruments and experienced quality control personnel can provide customers with more accurate quality inspection reports.
Our digital system keeps each batch traceable from raw materials to finished products. Complete quality inspection certificates can be offered upon request.
Packaging & Container Loading

AYA's product packaging can not only provide very good protection to the product, but also improve the beauty of the product.
AYA provides custom labeling services.
Mature warehousing and logistics system, and digital tools make the goods delivery high efficient.
Our scale and presence create cost efficiencies in intercontinental shipping as well as local custom clearing, warehousing and road transportation services. We take care of the last-mile logistics, and could issue the invoice based on DDP term and provide 3PL (third party logistics) services.
Usage Scenarios

Why Choose AYA?

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