Looking for reliable internal tooth lock washer suppliers in China?
If you’re sourcing for automotive, machinery, or construction fasteners, picking the right supplier means balancing quality, lead time, and price. As someone with 15 years in this field (Hi, I’m Monica from Shanghai Hengrui), I’ve worked closely with overseas buyers, handling projects from Canada to Germany.
So today, let me walk you through the Top 10 internal tooth lock washer manufacturers in China, based on quality control, global experience, and product specialization.
Summary Table: Top 10 Internal Tooth Lock Washer Suppliers in China
| Company Name | Main Products | Key Strengths |
|---|---|---|
| Shanghai Hengrui Industry Co., Ltd. | Lock washers, Screws, Nuts, bolts | 15+ yrs industry experience, fast shipping |
| Hebei Chuangke Fastener Mfg Co., Ltd | Internal tooth washers, spring washers | Industry-wide usage, global exports |
| Zhejiang Unit Hardware Products Co., Ltd | SS/Copper washers, internal lock washers | Export to EU/Asia, certified |
| Taizhou Wanluo Hardware Co., Ltd | Internal tooth washers, spring washers | Modern equipment, global reach |
| Zhejiang Grand Hardware Co., Ltd | Internal tooth, spring, flat washers | ISO certified, steady quality |
| T&Y Hardware Industry Co., Ltd | DIN6797 lock washers, fasteners | ISO9001, Europe export experience |
| Jiaxing Yheng Group Limited | Internal tooth washers, spring washers | High-end production line |
| Wuxi Ings Metal Parts Co., Ltd | Internal tooth washers, metal fasteners | Timely delivery, global clients |
| Ningbo Anbor Hardware Co., Ltd | SS/Carbon steel washers | International standard quality |
| Dongguan Yubiao Hardware Co., Ltd | Lock washers, nuts, spring washers | Good service, innovation-focused |
| Hand Industrial Co., Limited | Internal tooth washers, spring washers | Automotive-grade QC |
1. Shanghai Hengrui Industry Co., Ltd
Company Overview: Shanghai Hengrui is your go-to expert for lock washers, especially internal tooth types, along with bolts, nuts, and customized fasteners.
Location: Shanghai
Main Products: Tooth lock washer, Bolts, Nuts, Washers, Screw,and custom fasteners, machined parts
At Hengrui, we manufacture according to DIN, IFI, ISO standards. Backed by 15 years of industry experience and a responsive B2B team, we offer fast production and reliable delivery. Our washers are used in wind energy, automotive, oil & gas, and infrastructure.
2. Hebei Chuangke Fastener Manufacturing Co., Ltd
Company Overview: A specialist in lock washers including internal tooth, spring, and flat types. Products are widely used in machinery, vehicles, and construction sectors.
Location: Hebei Province
Main Products: Internal tooth lock washers, spring washers, flat washers
Their full quality management system ensures that each washer batch meets export standards.
3. Zhejiang Unit Hardware Products Co., Ltd
Company Overview: Known for stainless steel and copper washers, Unit Hardware supplies precision internal tooth lock washers globally.
Location: Zhejiang Province
Main Products: Internal tooth washers, SS/copper washers
Multiple international certifications and consistent export to Europe and Asia make them a solid choice.
4. Taizhou Wanluo Hardware Products Co., Ltd
Company Overview: Specializes in internal tooth washers with modern machinery and strict QC.
Location: Jiangsu Province
Main Products: Internal tooth washers, spring washers
Products meet various industrial applications and are exported globally.
5. Zhejiang Grand Hardware Co., Ltd
Company Overview: ISO9001 certified producer of internal tooth, spring, and flat washers.
Location: Zhejiang Province
Main Products: Internal tooth lock washers, spring washers
They cater mainly to the machinery and building industries with stable and repeatable quality.
6. T&Y Hardware Industry Co., Ltd
Company Overview: T&Y specializes in DIN6797 internal tooth lock washers and exports primarily to Europe.
Location: Shanghai
Main Products: Internal tooth washers, spring washers
ISO9001 certified and best known for fast lead time and accurate dimensions.
7. Jiaxing Yheng Group Limited
Company Overview: Offers advanced washer production lines and tight QC processes.
Location: Jiaxing, Zhejiang
Main Products: Internal tooth washers, spring washers, general fasteners
They’re a popular supplier to industrial distributors and OEM clients.
8. Wuxi Ingks Metal Parts Co., Ltd
Company Overview: Precision metal parts maker with specialization in internal tooth lock washers.
Location: Wuxi, Jiangsu Province
Main Products: Internal tooth washers, spring washers, metal fasteners
Clients value their on-time delivery and strict packaging process.
9. Ningbo Anbor Hardware Co., Ltd
Company Overview: Produces both stainless steel and carbon steel lock washers.
Location: Ningbo, Zhejiang Province
Main Products: Internal tooth washers, SS washers
Anbor supplies to electronics, machine building, and hardware distributors.
10. Dongguan Yubiao Hardware Co., Ltd
Company Overview: Manufactures internal tooth washers with a focus on R&D and service.
Location: Dongguan, Guangdong
Main Products: Internal tooth lock washers, spring washers, nuts
They export to Europe and North America, and are praised for stable quality.
11. Hand Industrial Co., Limited
Company Overview: Produces high-grade lock washers for automotive and mechanical use.
Location: Jiangsu Province
Main Products: Internal tooth washers, spring washers
Known for automotive-grade tolerances and full material traceability.
Frequently Asked Questions (FAQ)
Q1: What is the main use of internal tooth lock washers?
A: They’re used to prevent fasteners from loosening due to vibration, especially in electrical panels, motors, and automotive assemblies.
Q2: Which materials are most common?
A: Carbon steel, stainless steel (304, 316), and copper for special applications.
Q3: Can I get DIN6797-compliant washers?
A: Yes! T&Y, Hengrui, and Grand Hardware all offer DIN standard washers.
Q4: What’s the usual MOQ for export?
A: Ranges from 10,000 to 50,000 pcs, depending on size and material. Samples often available.
Contact Hengrui Fastener for Custom Internal Tooth Lock Washers
Internal tooth lock washers are tiny—but critical.
Choosing the right supplier means fewer reworks, fewer shipment delays, and happy end users. These 10+ companies have the equipment, staff, and systems to support your needs.
For specialized applications that require custom solutions, Hengrui Fastener offers high-quality, customizable Inconel bolts 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.
