DIN 603 Carriage Bolt Square Neck Bolt/Round Head Bolts with Short Square Neck

A carriage bolt is a special bolt with a round or oval head and a square neck underneath. It is mainly used to connect wood or other soft materials. The design of the carriage bolt makes it difficult for the head to rotate after installation, which can provide a more secure fixing effect.

Handan Haoqiang Fastener Manufacturing Co., Ltd.

Address: C6-13, Shichuang Logistics Port, Yongnian District, Handan City, Hebei Province, China  

Established in 2005, Handan Haoqiang Fastener Manufacturing Co., Ltd. is a professional manufacturer and exporter specializing in high-quality fasteners. With over a decade of expertise in production and a global trade presence since 2014, we have built a reputation for delivering reliable and precision-engineered fastening solutions to clients worldwide.  

Core Products: 
- Nuts and bolts of various specifications  
- High-strength bolts and nuts  
- Customized fasteners tailored to client requirements  

Compliance Standards: 
Our products adhere to international standards, including:  

- DIN (German Standard)  

- GB (Chinese National Standard)  

- ANSI/ASTM (American Standard)  

- BSW (British Standard Whitworth)  

- JIS (Japanese Industrial Standard)  

Equipped with advanced manufacturing technology and strict quality control systems, we ensure durability, performance, and compliance with global industry demands. Our commitment to innovation and customer-centric service has enabled us to establish long-term partnerships across industries such as construction, machinery, automotive, and energy.  

At Haoqiang Fastener, we prioritize integrity, efficiency, and sustainability. Whether for domestic projects or international exports, we strive to exceed expectations with competitive pricing, timely delivery, and exceptional after-sales support.  

Contact us today to discuss your fastener needs and explore how we can strengthen your projects with our expertise! 

PACKAGE  :   25kgs Box with Pallet, 25kgs woven bags, 25 kgs Gunny bags , or we can follow customer's request

**Product & Specifications**  
Q: What standards do your fasteners comply with?* 
A: Our products meet DIN (German), GB (China), ANSI/ASTM (USA), BSW (UK), and JIS (Japan) standards. Custom specifications are available upon request.  

**Order & Payment**  
*Q: How can I track my international order?*  
A: A real-time tracking number will be emailed once your shipment is dispatched. For urgent inquiries, contact export customer service 

**Shipping & Logistics**  
*Q: What are your delivery options for overseas customers?* 
 A: We offer sea freight (FOB/CIF), air freight, and express courier (DHL/FedEx) with competitive rates. Delivery timelines vary by destination.  

**Returns & Warranty**  
*Q: What if I receive defective products?*  
 A: We provide a 12-month quality guarantee. Report issues within 7 days of receipt with photos/video, and we'll arrange replacements or refunds promptly.  

**Technical Support**  
*Q: Can you assist with material selection for extreme environments?*  

 A: Absolutely! Our engineering team offers free consultation on corrosion-resistant, high-temperature, or high-load solutions.