Wave Single Coil Spring Lock Washers

Hebei Dongshao Fastener Manufacturing Co., Ltd. is a well-known supplier and manufacturer of Wave single coil spring lock washers in China.

The Wave single coil spring lock washers made by the company has excellent elasticity and buffer performance, which can effectively absorb shock, absorb vibration and compensate the vibration and noise generated by the machine equipment in the movement.The Wave single coil spring lock washers increases its elasticity and adaptability through the design of the corrugated shape. It can adapt to different dynamic loads and temperatures during exercise, extending the service life.

We provide high quality Wave single coil spring lock washers, the material conforms to international standards, can meet the different performance and quality needs of customers, to ensure the quality and reliability of products.We offer a wide range of corrugated spring washers in various specifications and models, suitable for different mechanical equipment and industries, to meet customer needs.

Product Parameter

Why Choose DONGSHAO? Our Core Manufacturing Advantages

1. In-House Full-Chain Production & Thermal Control

Unlike suppliers who outsource critical processing steps, Dongshao operates its own specialized infrastructure, including the Handan Dongke Metal Surface Treatment Facility and the Dongshao Heat Treatment Plant.

The Advantage: Every wave washer undergoes precise, uniform heat treatment in our internal facility to lock in optimum spring fatigue resistance. We control the entire process from raw steel to final surface coating, eliminating third-party delays and quality variances.

40+ Years of Fastener Expertise

Founded in the 1980s, Dongshao has evolved into a massive, high-tech enterprise covering a 10,000 square meter facility. We house a robust team of over 100 dedicated employees, including more than 20 veteran engineering and technical experts. Decades of specialized manufacturing mean we understand exact tolerances, dynamic loading demands, and industry-specific stress profiles.

3. State-Certified Reliability (315 Credit Demonstration Unit)

Dongshao has been repeatedly rated as a 315 Excellent Credit Reference Demonstration Unit in Hebei Province. This official certification underscores our strict adherence to contract terms, transparent material sourcing, and honest pricing structures.

4. Comprehensive Global Fastener Integration

As a group development enterprise, our product scope goes far beyond washers. We supply structural heavy hex bolts, wind power components, photovoltaic hot-dip galvanized fasteners, stainless steel setups, and anchor systems. Choosing Dongshao allows you to streamline your supply chain by sourcing matching high-strength bolts (such as ANSI/ASME A325 or A490) and nuts (ASME A563) directly from a single trusted partner.

5. Proven International Supply Tracks

Our products are trusted nationwide and heavily exported to Southeast Asia, Europe, North America, and Africa. We provide multi-standard compliance (GB, DIN, ANSI/ASME, ISO) and comprehensive custom packaging options to fulfill the logistical requirements of international industrial buyers.

Manufacturing Process 

DONGSHAO follows a fully closed-loop, precision-controlled manufacturing sequence to guarantee that each washer achieves the ultimate balance of elasticity and durability:

Step 1: Premium Raw Material Selection 

Step 2: High-Precision Automated Stamping 

Step 3: In-House Heat Treatment (Quenching and Tempering) 

Step 4: Surface Coating and Finishing Step 5: Rigorous Quality Control Testing Step 6: Sealed Export Packaging and Logistics

Surface Treatment Options 

Depending on your operational environment (indoor, outdoor, marine, or highly corrosive chemical conditions), DONGSHAO offers professional, in-house surface finishes via our specialized Handan Dongke Facility:

1. Plain / Black Oxide: Cost-effective, oiled for basic rust prevention; ideal for internal machinery oil-submerged environments.

2. Electro-Galvanized (Blue/White/Yellow Zinc): Provides a bright finish and standard corrosion resistance (over 48 hours salt spray test) with full RoHS compliance options.

3. Hot-Dip Galvanized (HDG): Heavy-duty zinc layer with exceptional atmospheric protection; perfect for outdoor photovoltaic (PV) brackets and wind power structures.

4. Dacromet / Geomet: Ultra-thin anti-corrosion coating without hydrogen embrittlement risk; ideal for automotive and high-tensile structural applications (over 500 to 1000 hours salt spray test).

Packaging and Supply Chain Logistics We understand the rigors of international maritime and air transit. DONGSHAO ensures that products arrive pristine, count-accurate, and ready for automated assembly lines.

• Bulk Packaging: 25 kg double-layered woven bags or reinforced cardboard cartons lined with moisture-proof plastic bags.

• Custom Small Boxes: Customized retail/small box packaging with your brand logo, barcodes, and specific part numbers for direct distribution.

• Palletization: All export shipments are securely stacked on Euro-standard export pallets and wrapped with heavy-duty stretch film to ensure stability during transit.

• Prompt Lead Times: Supported by our massive warehousing space, standard metric sizes (Phi 3 to Phi 30) maintain rolling safety stocks for immediate dispatch.

Frequently Asked Questions (FAQ)

Q1: What is the main structural advantage of a Wave Single Coil Spring Lock Washer compared to a standard split spring washer? A: Standard split washers rely solely on the sharp split edges to bite into the nut face. The wave single coil design adds a corrugated wavy spring arc. This provides continuous, multi-point axial spring tension and buffering, which distributes the clamping load more evenly and is significantly better at dampening vibration and acoustic noise without damaging the mating surface.

Q2: How does DONGSHAO prevent the common industry issue of washers flattening out and losing elasticity? A: This comes down entirely to metallurgical control and heat treatment. We use authenticated spring steel rather than cheap scrap steel. Furthermore, our in-house heat treatment plant precisely controls the quenching and tempering cycles, ensuring each washer hits the exact Rockwell Hardness (HRC) required to spring back even after repeated compression cycles.

Q3: Can you manufacture non-standard sizes or custom wave heights? A: Yes. Backed by our engineering team of over 20 technical experts, we can design custom tooling matrices to adjust the outer diameter (OD), inner diameter (ID), thickness, or wave amplitude to fit your custom engineering blueprints.