Looking for a reliable cap nut supplier in China? Whether you’re in automotive, industrial machinery, or the construction sector, finding the right partner is key. Hi, I’m Monica Song from Shanghai Hengrui Industry Co., Ltd, with 15+ years in the fastener field. I know the pain of searching endless factory lists, only to find poor quality or delayed shipments.
So I’ve done the research for you. Here are the Top 10 Cap Nut Manufacturers in China. These companies were selected based on real export experience, QC systems, and their ability to support B2B bulk and OEM orders.
Quick Summary Table：Cap Nut Suppliers in China
| Company Name | Location | Established | Main Products |
|---|---|---|---|
| Shanghai Hengrui Industry Co., Ltd. | Shanghai | 2021 | Cap nuts, bolts, Screw, OEM part |
| Ningbo OuKaiLuo Hardware Co., Ltd. | Ningbo, Zhejiang | 1999 | Cap nuts, bolts, screws, washers |
| Jiaxing Qimu Trading Co., Ltd. | Jiaxing, Zhejiang | ~ | Cap nuts, screws, anchors, washers |
| HISENER Industrial Co., Ltd. | Haining, Zhejiang | 2004 | Cap nuts, flange nuts, lock nuts |
| Ningbo Yi Pian Hong Fastener Co., Ltd. | Ningbo, Zhejiang | 2001 | Cap nuts, high-strength bolts |
| Hangzhou Lizhan Hardware Co., Ltd. | Hangzhou, Zhejiang | 2009 | Cap nuts, bolts, machine screws |
| Shanghai TopKun Industry Co., Ltd. | Shanghai | 2006 | Cap nuts, high-strength bolts, washers |
| Yangzhou XIYI Fasteners Co., Ltd. | Yangzhou, Jiangsu | 2010 | Cap nuts, bolts, screws |
| Dongguan Hongrui Hardware Tech Co., Ltd | Dongguan, Guangdong | ~ | Cap nuts, bolts |
| Aozhan Industrial Co., Ltd. | Hangzhou, Zhejiang | 2005 | Precision cap nuts, fasteners |
1. Shanghai Hengrui Industry Co., Ltd
Company Overview: Founded in 2021, Hengrui specializes in manufacturing high-quality cap nuts, bolts, washers, and customized fasteners. With advanced machinery and ISO-based QA systems, we serve industries like automotive, construction, and oil & gas.
Location: Shanghai
Main Products: Cap nuts, bolts, Screw, nuts, washers, and custom fasteners, machined parts, stamping parts
We’re known for fast delivery, OEM flexibility, and rigorous quality control. All products are compliant with international standards like DIN, ANSI, and ISO.
2. Ningbo OuKaiLuo Hardware Co., Ltd.
Company Overview: Established in 1999, OuKaiLuo is one of the top-tier Chinese fastener producers. Their cap nuts are manufactured under ISO, SGS, RoHS, and BV standards.
Location: Ningbo, Zhejiang
Main Products: Cap nuts, bolts, screws, washers
Their cap nuts are widely used in Europe and Southeast Asia, offering both standard and customized orders.
3. Jiaxing Qimu Trading Co., Ltd.
Company Overview: Qimu is known for fastener manufacturing and global export. They produce cap nuts, screws, anchors, and washers that meet DIN and ANSI standards.
Location: Jiaxing, Zhejiang
Main Products: Cap nuts, screws, anchors, washers
Ideal for building material distributors and automotive applications.
4. HISENER Industrial Co., Ltd.
Company Overview: Based in Haining, HISENER was founded in 2004 and exports to over 55 countries. Their cap nuts are ISO and CE certified, widely used in the automotive and construction industries.
Location: Haining, Zhejiang
Main Products: Cap nuts, flange nuts, lock nuts
A strong export background and wide product range make them a good long-term supplier.
5. Ningbo Yi Pian Hong Fastener Co., Ltd.
Company Overview: Founded in 2001, this company has a capacity of 30,000 tons annually. Their cap nuts and high-strength bolts are widely used in automotive and construction.
Location: Ningbo, Zhejiang
Main Products: Cap nuts, high-strength bolts, washers
They’re ISO and RoHS certified and operate strict QC.
6. Hangzhou Lizhan Hardware Co., Ltd.
Company Overview: Lizhan has been producing fasteners since 2009, focusing on cap nuts and screws for industrial use.
Location: Hangzhou, Zhejiang
Main Products: Cap nuts, bolts, machine screws
They’re ISO 9001 certified and cater to clients needing volume and consistency.
7. Shanghai TopKun Industry Co., Ltd.
Company Overview: Since 2006, TopKun has served both domestic and international markets. Their cap nuts come in a wide variety of materials and finishes.
Location: Shanghai
Main Products: Cap nuts, high-strength bolts, washers
They offer both standard and customized fastener solutions.
8. Yangzhou XIYI Fasteners Co., Ltd.
Company Overview: XIYI is a reliable partner for precision cap nuts and bolts that meet DIN/ISO specs. Founded in 2010, they focus on accuracy and service.
Location: Yangzhou, Jiangsu
Main Products: Cap nuts, bolts, screws
Great for buyers in automotive and OEM assembly.
9. Dongguan Hongrui Hardware Technology Co., Ltd.
Company Overview: Known for cap nuts and bolts, Hongrui exports to EU, US, and Southeast Asia. Certified under CE and RoHS.
Location: Dongguan, Guangdong
Main Products: Cap nuts, bolts
Good choice for mid-sized orders with surface treatment requirements.
10. Aozhan Industrial Co., Ltd.
Company Overview: Since 2005, Aozhan has focused on precision fasteners including cap nuts, mainly for the aviation, auto, and electronics sectors.
Location: Hangzhou, Zhejiang
Main Products: Precision cap nuts, specialty fasteners
They’re known for tight tolerance production and export-grade QA.
FAQ
Q1: What are cap nuts used for?
A: Cap nuts provide a clean finish and protect threaded ends. They’re common in auto, aerospace, machinery, and public infrastructure.
Q2: Can I order in custom materials like brass or stainless steel?
A: Yes. Most of the manufacturers listed offer stainless steel, brass, zinc-plated, and nylon-coated options.
Q3: Do these companies accept OEM orders?
A: Absolutely. All 10 companies offer OEM/ODM support with drawing or sample development.
Q4: Can I get certificates like ISO or SGS reports?
A: Yes. Most provide ISO 9001, CE, RoHS, or SGS documentation upon request.
Conclusion
There are plenty of cap nut factories in China, but only a few combine quality, service, and export experience. These 10 manufacturers are B2B-ready, capable of handling everything from small samples to large OEM batches. Need help selecting or quoting? I’m Monica from Shanghai Hengrui Industry Co., Ltd. Let’s get you fasteners that hold it all together.
Contact Hengrui Fastener for Custom Cap Nut
For specialized applications that require custom solutions, Hengrui Fastener offers high-quality, customizable cap nuts 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.
