English Views: 68 Author: Site Editor Publish Time: 2026-04-23 Origin: Site
Jiangsu Sunzo DIN6796 disc spring washer:
—An innovative solution to ensure bolted connection safety
In the field of industrial bolt connection safety, the DIN6796 disc spring washer (also known as the Bessel washer) has served as a time-tested critical component, consistently playing an irreplaceable role. This innovative fastener, invented by French engineer Bessel, was specifically designed to prevent bolt connections from loosening. Its compliance with the DIN6796 standard ensures product quality and performance stability, making it a trusted choice across global industries. Jiangsu Sunzo Spring Technology Co., Ltd., a mixed-ownership enterprise with participation from China National Nuclear Corporation, specializes in the research, development, and production of such high-performance elastic components, seamlessly integrating this classic design with modern industrial requirements.
The unique disc-shaped structure of the disc spring washer endows it with exceptional elasticity and preload, enabling effective vibration and impact absorption and fundamentally addressing bolt loosening issues during prolonged use. Leveraging its R&D center in Nanjing and production base in Sihong, Jiangsu, Jiangsu Sunzo has established a comprehensive industrial chain spanning material development to finished product manufacturing. The company employs high-quality materials such as SAE-C1074,51CrVA, and SUS301/304/316, combined with its proprietary flat grinding equipment and patented composite disc spring assembly technology (patent publication number CN223781943U), ensuring stable performance across extreme temperatures from-200°C to 600°C. These products find extensive applications in high-end sectors including nuclear power, aerospace, automotive manufacturing, and engineering machinery.
1. Implementation standard: DIN6796 (compatible with GB/T1972-2023 and the ISO international standard)
2. Material selection: Carbon steel (70#,72B,65Mn), stainless steel (SUS304/316), phosphor bronze, and high-temperature alloys (INCONEL 718, NIMONIC 90)
3. Surface treatment: Blackening, galvanizing (blue-white/colored zinc), hot-dip galvanizing, Dacromet coating
4. Structural characteristics: The spherical washer achieves automatic centering, improving the contact accuracy of the load-bearing surface to over 98%.
5. Specification range: Inner diameter 3mm–200mm, thickness 0.2mm–12mm (complete specification parameters provided)
6. Customization capability: Supports manufacturing products for special operating conditions based on customer drawings, with a minimum order quantity of 500 units.
7. Production Capacity: Annual production capacity of 40 million units, equipped with 12 automated production lines
8. Packaging standards: Export-grade wooden crates (IPPC-certified) or cardboard boxes with pallets
9. Origin Information: China, Jiangsu Province, Suqian City, Sihong County Economic Development Zone
10. Brand Services: Sunzo's proprietary brand/OEM manufacturing (certified under IATF 16949 automotive industry standards)
11. Delivery timeline: Standard products – 10 days; Custom products – 15–45 days
As a high-tech enterprise, Jiangsu Sunzo holds over 70 patented technologies and has participated in the formulation of multiple national and international disc spring standards. The company has established a comprehensive quality control system, implementing 16 inspection procedures from raw material receipt to finished product release, with key indicators including:
The elasticity coefficient deviation is ≤±5% (industry average: ±8%).
Surface hardness: HV380–450 (compliant with DIN EN 10270-3 standard)
Fatigue life ≥ 1 million cycles (under 20% rated load condition)
Salt spray test ≥500 hours (galvanized treatment)
With certifications under the ISO9001, ISO14001, and ISO45001 standards, the company's laboratory is equipped with professional instruments such as material tensile testing machines, fatigue testing systems, and metallographic microscopes, ensuring that every batch of products meets customer technical requirements.
In the nuclear power sector, the company's high-temperature resistant disc spring assembly supplied to a nuclear power plant successfully resolved the sealing challenge for reactor pressure vessel bolts. In the wind power industry, customized waveform spring washers increased the retention rate of the main shaft bearing preload force by 30%. For automotive transmission systems, optimized material formulations extended product lifespan to 2.5 times that of conventional washers. The company has established joint laboratories with Southeast University and Nanjing Tech University to develop specialized elastic components for emerging fields such as hydrogen energy equipment and ultra-high voltage devices, with technical specifications reaching internationally advanced levels.
Jiangsu Sunzo provides end-to-end services ranging from technical consultation to after-sales support:
1. Free FEA simulation analysis provided to assist customers in optimizing gasket selection
2. We provide sample testing services with a cycle not exceeding 7 working days.
3. Create a dedicated customer profile and regularly provide product maintenance recommendations
4. Overseas customers can enjoy localized technical support (with service centers in the United States and Germany).
If you need more product information or technical solutions, please contact us via the following methods:
Tel: +86-18005182879
Official website: www.sunzospring.com
We look forward to collaborating with you to provide reliable safeguards for the safe operation of industrial equipment.
