Top 10 Lock Washer Manufacturers in China

Looking for reliable lock washer manufacturers in China?

If you’re sourcing for automotive, machinery, or construction projects, you know that a weak washer can compromise an entire assembly. That’s why we took the time to identify the Top 10 lock washer suppliers in China that combine manufacturing capacity with international certifications.

As Monica from Shanghai Hengrui Industry Co., Ltd, I’ve been helping global B2B clients choose the right fastener partners for over 15 years. This list is based on production capability, export experience, and real client feedback.

1. Shanghai Hengrui Industry Co., Ltd

Company Overview: We specialize in high-quality washers: lock washers, spring washers, and flat washers—plus bolts and nuts. Though officially established in 2021, our team brings over 15 years of experience and exports to over 20 countries.
Location: Shanghai
Main Products: Lock washers, spring washers, Screw, nuts, washers, and custom fasteners, machined parts, stamping parts

We offer full OEM services, ISO 9001 and RoHS certifications, and precision-controlled production processes. Used in auto, machinery, oil & gas, and construction sectors.

2. Ningbo OuKaiLuo Hardware Co., Ltd.

Company Overview: A veteran supplier with strong international certifications and manufacturing capabilities. They produce a wide range of washers and general fasteners for global B2B customers.
Location: Ningbo, Zhejiang
Main Products: Lock washers, spring washers, flat washers, bolts, nuts

OuKaiLuo is ideal for medium to large volume OEM buyers. Their consistent quality and compliance (ISO, RoHS, SGS) make them a safe bet.

3. Jiaxing Qimu Trading Co., Ltd.

Company Overview: Known for combining flexibility and scale. Qimu offers good quality lock washers that comply with international standards and exports to multiple regions.
Location: Jiaxing, Zhejiang
Main Products: Lock washers, spring washers, flat washers, nuts

Jiaxing Qimu is a solid choice for companies seeking DIN, ANSI, or ISO-standard fasteners at competitive prices. Their streamlined manufacturing enables faster lead times, while their experience in international shipping makes them ideal for North American and European importers who need reliable delivery and document compliance.

4. HISENER Industrial Co., Ltd.

Company Overview: HISENER has been in the washer game since 2004. Exporting to 55+ countries, they bring serious scale.
Location: Haining, Zhejiang
Main Products: Lock washers, spring washers, flange nuts

HISENER offers robust product testing, modern production systems, and a diverse product line that covers the needs of marine, automotive, and construction industries. Their in-house testing labs and certifications make them a reliable partner for projects that require strict tolerances and durability in extreme conditions.

5. Shanghai Jianxin Hardware Co., Ltd.

Company Overview: Jianxin focuses on various washers and nuts. Their setup supports both general and high-performance applications.
Location: Shanghai
Main Products: Lock washers, spring washers, nuts

Jianxin is particularly suitable for OEM customers or engineering firms who need non-standard bolts. They’re experienced in handling small-batch prototypes and can scale up quickly for mass production. Their Shanghai location provides logistical advantages for export-oriented orders.

6. Hangzhou Lizhan Hardware Co., Ltd.

Company Overview: Lizhan is ISO 9001 certified and focused on standard and special washer production.
Location: Hangzhou, Zhejiang
Main Products: Lock washers, spring washers, flat washers

Suitable for mid-range clients looking for stable QC and responsive service.

7. Dongguan Mike Hardware Co., Ltd.

Company Overview: Mike Hardware manufactures a wide range of screws and washers, with a focus on strict in-house quality control.
Location: Dongguan, Guangdong
Main Products: Lock washers, spring washers, screws

Good for buyers in industrial and engineering sectors.

8. Aozhan Industrial Co., Ltd.

Company Overview: Established in 2005, Aozhan emphasizes craft and innovation in precision fastener production.
Location: Hangzhou, Zhejiang
Main Products: Lock washers, spring washers, flat washers

Aozhan has been a trusted name in the fastener industry since 2005. With a focus on both standard and custom fasteners, including high-precision 304/316 stainless steel bolts, Aozhan provides tailored solutions to meet the unique needs of medical, electronics, and aerospace clients. If you require tight tolerance components, they’ve got you covered.

9. Yangzhou XIYI Fasteners Co., Ltd.

Company Overview: XIYI has over a decade of experience producing ISO- and DIN-standard washers.
Location: Yangzhou, Jiangsu
Main Products: Lock washers, spring washers, flat washers

Their focus on steady quality and solid packaging makes them a fit for construction and hardware distributors.

10. Prince Fastener Manufacturing Co., Ltd.

Company Overview: Prince Fastener focuses on stainless steel lock washers and related products. Their stable ISO systems make them dependable.
Location: Shanghai
Main Products: Stainless lock washers, spring washers, flat washers

Prince is ideal for buyers who value durability, anti-corrosion performance, and international standard compliance. Their bolts are suitable for construction, automotive, and machinery, and they maintain a strong presence in European and North American markets.

Quick Summary Table：Lock Washer Suppliers in China

Frequently Asked Questions (FAQ)

Q1: What is the difference between lock washers and spring washers?
A: Lock washers are designed to prevent fastener loosening. Spring washers add tension and resist vibration.

Q2: Can I request custom dimensions or coating?
A: Absolutely. Most listed suppliers offer OEM, including coatings like zinc, Dacromet, or black oxide.

Q3: What are the common standards for lock washers?
A: DIN 127, DIN 6796, ANSI B18.21.1, and ISO 7089 are the usual ones. All these suppliers comply.

Q4: What is the typical lead time?
A: Typically 25–35 days after deposit, depending on the order size.

Conclusion

Choosing the right lock washer supplier in China is all about matching volume, quality, and communication. These 10 manufacturers have a solid track record. And if you’re still on the fence? I’m Monica from Shanghai Hengrui Industry Co., Ltd. Feel free to reach out—we’ll help you fasten your project the right way.

Contact Hengrui Fastener for Custom Lock Washers
For specialized applications that require custom solutions, Hengrui Fastener offers high-quality, customizable Lock Washers and fasteners. Whether you need a specific size, material, or finish, Hengrui can provide tailored fasteners to meet your exact requirements. Contact Hengrui Fastener to learn more about our products and services.