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Precision Fasteners for Global Industries

Wenzhou Dayang Fastener Co., Ltd. – 30+ years of excellence in manufacturing high-quality retaining rings, washers, screws, and custom fasteners. Compliant with DIN, GB, ANSI, ASME, and JIS standards. Trusted by global leaders in automotive, wind power, and engineering.

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30+

Years Experience

5

Patents

26

Honors & Certificates

6,500+

Satisfied Customers

About DaYang Fastener

Wenzhou Dayang Fastener Co., Ltd., located in the "Capital of Automobile and Motorcycle Parts in China" – Rui'an Automobile and Motorcycle Parts Industry Base, is a production and trade enterprise with a long history in the fastener industry and independent import and export rights.

With over 30 years of experience, we specialize in the design, development, and manufacturing of precision fasteners used across automotive, wind power, engineering machinery, electric tools, household appliances, and new energy sectors.

  • Thousands of stamping molds in inventory
  • 10,000+ product specifications
  • Compliance with DIN, GB, ANSI, ASME, JIS standards
  • Custom parts and OEM/ODM services available
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Production Workshop Testing Center Workshop Warehouse General Office

What We Do

We manufacture high-precision fasteners and stamped components for a wide range of industrial applications. Our capabilities span standard and non-standard parts across multiple international standards.

Retaining Rings & Washers

Thousands of molds for DIN6797J, GB861.1, M2400/SW, M2300/SB, and custom designs. High durability, corrosion-resistant materials.

Screws & Nuts

Cold heading machine processed bolts, screws, and nuts. Available in stainless steel, carbon steel, and alloy materials.

Custom & Non-Standard Parts

OEM/ODM services for automotive, wind power, and industrial machinery. Rapid prototyping and batch production.

International Standards

Compliant with DIN (Germany), GB (China), ANSI/ASME/IFI (USA), and JIS (Japan) specifications.

Automotive & Motorcycle Parts

Precision stamped components for engines, transmissions, suspensions, and electrical systems.

Quality Assurance

In-house testing center, ISO practices, and lean production ensure consistent, reliable performance.

Our Products

Explore our wide range of precision fasteners and stamped components

DIN6797J/GB861.1 Retaining Ring

DIN6797J / GB861.1

External retaining ring, high-strength carbon steel, corrosion-resistant finish. Ideal for automotive shafts and housings.

Customized Parts

Customized Parts

OEM/ODM manufacturing for unique fastener needs. Rapid prototyping and scalable production.

M2400/SW Washer

M2400/SW

Spring washer with high elasticity and fatigue resistance. Suitable for vibration-prone environments.

M2300/SB Retaining Ring

M2300/SB

Internal retaining ring, precision stamped, used in gearboxes and hydraulic systems.

M1408 Washer

M1408

Flat washer, DIN standard, used with bolts and screws in structural and mechanical applications.

M1308 Retaining Ring

M1308

Light-duty retaining ring, ideal for small motors, sensors, and electronic enclosures.

DIN5417 Circlip

DIN5417

External circlip with high tensile strength. Used in automotive and industrial shaft assemblies.

DIN983 Spring Washer

DIN983

Toothed lock washer, prevents loosening under vibration. Common in heavy machinery and transport.

View All Products

Why Choose DaYang

We combine decades of expertise with cutting-edge production to deliver unmatched quality

Advanced Equipment & Technical Strength

Our facility is equipped with advanced stamping, cold heading, and CNC machinery. We have a strong technical team focused on mold design, process optimization, and product development, ensuring stable quality and high efficiency.

Lean Production & Quality Management

We implement a sound management system and promote "lean production" to minimize waste and maximize value. Our quality control includes in-house testing, material traceability, and continuous improvement practices.

Extensive Product Range

With over 10,000 product specifications and thousands of stamping dies, we offer one of the most comprehensive fastener portfolios in the industry. From standard DIN/GB parts to custom solutions, we meet diverse industrial needs.

Global Compliance & Export Ready

Our products meet international standards (DIN, GB, ANSI, JIS) and are exported worldwide. We hold independent import/export rights and serve clients across Asia, Europe, and North America.

Trusted by Industry Leaders

Würth Geely Changan Chery

Latest News

Stay updated with industry insights and company developments

How To Distinguish Between Stainless Steel Screws

Learn the key differences in material grades, magnetism, and corrosion resistance for optimal fastener selection.

October 27, 2021

Precautions For Stainless Steel Screws During Storage

Best practices to prevent contamination, rust, and thread damage during long-term storage of stainless fasteners.

October 27, 2021

Causes Of Surface Quenching Cracks On Fasteners

Understanding heat treatment flaws and how proper process control prevents cracking in high-strength fasteners.

October 27, 2021

Get in Touch

Have questions about our fasteners or need a custom quote? Reach out to our team today.

Company: Wenzhou Dayang Fastener Co., Ltd.

Address: No.70 Luoshan Road, Xialin Industrial Zone, Tangxia Town, Rui'an, Zhejiang Province, China

Phone: +86-877-65365156

Fax: +86-577-65366117

Email: chinabiaogu@vip.163.com

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