1. About Zeyao Factory
We are a fastener factory with 19 years of manufacturing experience. We support OEM and ODM customization: you have samples, drawings, or ideas, and we can provide a one-stop service from design, prototyping, production to packaging.
The company has over 160 production lines, covering the entire process including cold heading, thread rolling, heat treatment, surface treatment, testing, and packaging.
Monthly output exceeds ten million pieces, enabling large-scale supply to meet wholesale and large-volume customization needs.
Our products have been exported to over 100 countries and regions, possessing rich export experience, international logistics channels, and compliance qualifications.
We provide one-stop customization services, from materials, specifications, strength grades, surface treatment, packaging, labeling, and logistics, all can be customized according to customer needs.
If you are looking for a reliable fastener factory in China as a partner, please contact us.
website:https://www.zeyaohardware.com/

2. Recommended Factory A: Handan Haosheng Fastener Co., Ltd.
Basic Information: Established in 1996, located in Yongnian District, Handan City, Hebei Province, China.
Registered capital: approximately 50 million RMB; factory area: over 30,000 square meters; current employees: approximately 180.
Monthly output: over 2,000 tons.
Products and Services: Specializes in high-strength bolts, nuts, expansion bolts, drywall nails, and other fasteners.
Products conform to national standard GB, and can also be manufactured according to German, American, British, Japanese, Italian, and Australian standards. Strength grades include 4.8, 8.8, 10.9, and 12.9.
Equipment process includes: raw materials, mold making, manufacturing, heat treatment, surface treatment, and packaging, possessing a complete production line from start to finish.
3. Recommended Factory B: Ningbo Fastenwell Metal Technology Co., Ltd.
Basic Information: "Fastenwell" is their brand/company name, commonly translated as Ningbo Fastenwell in Chinese.
They specialize in high-strength bolts, nuts, and standard and specialty bolts.
Products and Services: Their product range includes: Hex Bolts, Heavy Hex Bolts, Structural Bolts (A325), Anchor Bolts, Flange Bolts, Square Head Bolts, T-Head Bolts, etc.
They support the production of standard/custom bolts according to customer drawings or samples.
Materials include carbon steel, alloy steel, and stainless steel, suitable for construction, oil and gas, wind power, solar energy, railway, and bridge industries.
Why They are Recommended: Their wide product range and high customizability make them ideal for buyers requiring special specifications or non-standard parts.
They focus on the export market, making them suitable for cooperation with overseas clients.
They have the capacity to handle large-volume orders and can also provide rapid production.
4. Recommended Factory C: HISENER Industrial Co., Ltd.
Basic Information: Located in Haining, Zhejiang Province, established in 2004.
Recognized as "one of the world's top suppliers of screws and various fasteners."
Products and Services: Products include: Screws, Threaded Rods, Bolts, Nuts, Washers, Anchors, Brass Parts, and Stainless Steel Parts.
Emphasis on R&D Capabilities: For example, Bi-Metal Screws combine stainless steel and carbon steel for superior penetration and torsional resistance.
Why Recommended: A wide variety of products, including standard fasteners and niche products to suit diverse needs. Strong R&D capabilities, suitable for projects with "special functional requirements" (such as corrosion resistance, penetration, and bimetallic structures).
Emphasis on standards and quality, a plus for overseas buyers.
5. How to Choose the Right Factory?
Product Specifications and Strength Grade: Consider whether your project is for general use (e.g., furniture, lightweight components) or heavy-duty engineering (e.g., bridges, wind power, steel structures).
Customization Capability: If you have specific requirements for dimensions, materials, standards, or surface treatments, it's better to choose a factory that supports non-standard parts + ODM/OEM.
Production Capacity and Delivery Time: For large batches and urgent needs, please confirm monthly/weekly production capacity, availability of backup production lines, and reliable logistics capabilities.
Quality and Certification: Confirm whether the factory has ISO 9001 certification, SPC processes, third-party testing reports, export experience, and compliance with destination country standards (e.g., DIN/ISO/ANSI/BS/JIS).
Export Experience and Service System: For overseas clients, consider language communication, logistics, packaging, customs/declaration experience, and after-sales service.
Value for Money: Price is important, but don't sacrifice quality. Lower defect rates, more stable supply, and better one-stop service will save you a lot of trouble later.
