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Precision Fasteners
Engineered to Last

Haiyan Tianqi Fastener Co., Ltd. is a leading manufacturer of high-quality wood lag screws, self-tapping concrete screws, and industrial fastening solutions. Compliant with DIN standards, our products are trusted across construction, furniture, and infrastructure industries worldwide.

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About Haiyan Tianqi Fastener

As a professional manufacturer based in Jiaxing, Haiyan, China, Haiyan Tianqi Fastener Co., Ltd. specializes in the production of wood lag screws, self-tapping concrete screws, and a wide range of industrial fasteners. With years of experience and a commitment to quality, we serve clients across North America, Europe, Africa, Southeast Asia, and the Middle East.

Our factory in the Qinshan Industrial Zone adheres to strict quality control standards and environmental protection practices. We continuously invest in R&D and modern manufacturing techniques to deliver durable, reliable fastening solutions that meet international DIN specifications.

Industrial Expertise

DIN-compliant fasteners for heavy-duty applications

Global Reach

Exporting to 50+ countries via sea freight

Factory Interior

Our Product Range

High-performance fasteners designed for strength, durability, and precision. All products meet or exceed DIN standards.

Hexagonal Wood Screws

Hexagonal Wood Screws

High-strength hex head wood screws ideal for structural timber connections. Available in multiple lengths and thread types.

  • • DIN 571 compliant
  • • Galvanized or black oxide finish
  • • Carbon steel grade 4.8 / 8.8
Flange Wood Screws

Flange Wood Screws

Integrated washer design prevents pull-through and distributes load evenly. Perfect for softwoods and composite materials.

  • • Built-in flange for added stability
  • • Corrosion-resistant coating
  • • Wide range of diameters and lengths
Square Wood Screws

Square Wood Screws

Traditional square drive design offers superior torque and reduced cam-out. Ideal for manual installation in rustic and heavy timber.

  • • Classic square head for high torque
  • • Hot-dip galvanized option
  • • Made from high-carbon steel
Concrete Nails

Concrete Nails

Hardened steel nails designed for fastening into masonry, concrete blocks, and brickwork. Resistant to bending and breakage.

  • • High tensile strength
  • • Ring shank for grip
  • • Zinc-plated for durability
Headed Wood Screws

Headed Wood Screws

Classic round head wood screws with slotted or Phillips drive. Suitable for cabinetry, furniture, and interior trim.

  • • Available in multiple finishes
  • • Precision-threaded tips
  • • Easy to countersink
Phillips Wood Screws

Phillips Wood Screws

Cross-recessed (Phillips) head screws for quick and secure driving. Ideal for power tools and high-volume installations.

  • • Self-tapping point
  • • Anti-corrosion coating
  • • High drive engagement
Wood Lag Screws

Wood Lag Screws

Heavy-duty lag bolts for securing beams, joists, and structural components. Designed for maximum holding power.

  • • Hex head with washer
  • • Grade 8.8 strength
  • • Galvanized for outdoor use
Self Tapping Screws

Self Tapping Screws

Versatile screws that cut their own threads into wood, plastic, or light metal. No pre-tapping required.

  • • Sharp cutting tip
  • • High thread density
  • • Ideal for DIY and industrial use
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Why Choose DIN571?

We combine German engineering standards with Chinese manufacturing efficiency to deliver unmatched value.

DIN Compliance

All products meet or exceed DIN 571 and other relevant international standards.

Global Shipping

Reliable sea freight to North America, Europe, Africa, and Asia in 6–45 days.

Quality Assurance

Rigorous testing for strength, corrosion resistance, and dimensional accuracy.

Eco-Friendly

Sustainable packaging and environmentally responsible production processes.

50+
Countries Served
15+
Years Experience
10M+
Units Shipped Annually
99.8%
Customer Satisfaction

Frequently Asked Questions

What is DIN 571?

DIN 571 is a German standard that specifies the dimensions and technical requirements for wood screws with hexagonal heads. It ensures consistency in thread size, head diameter, and mechanical strength.

Do you offer custom sizes or packaging?

Yes, we provide OEM and ODM services. Custom lengths, diameters, finishes, and packaging options are available upon request.

How long does shipping take?

By sea: 6–10 days to Southeast Asia, 30–45 days to North America, Europe, Africa, and other regions. Air freight options are also available for urgent orders.

Are your products certified?

Yes, our factory maintains quality control systems and provides product certifications upon request, including material test reports and compliance documentation.

Get in Touch

For inquiries, quotes, or technical support, visit our official website to connect with our team.

Visit Official Website

Company: Haiyan Tianqi Fastener Co., Ltd.

Address: Jiaxing Haiyan China NO.1-3 Jincheng South Road, Qinshan Industrial Zone

Phone: +86-573-86408971

Mobile: +86-13606831322

Fax: +86-86408973

Email: 472660558@qq.com

Skype: tianqi

Postal Code: 314300

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