Within the vast landscape of industrial production, bolt and screw connections function like the joints of precision machinery, silently ensuring the stable operation of various equipment. However, these critical connections face the severe challenge of loosening—any malfunction can range from causing production halts to triggering catastrophic system failures. Against this backdrop, the DIN6796 disc spring washers manufactured by Jiangsu Sanzuo—widely known as Belleville washers—stand out as the ideal solution to address industrial bolt loosening issues.
Jiangsu Sunzo specializes in the research, development, production, and sales of high-quality elastic components such as disc springs, disc washers, and wave springs. Its products are widely used in numerous advanced industries including nuclear power, aviation, aerospace, military applications, hydrogen energy, ultra-high voltage systems, automotive manufacturing, wind power, shipbuilding, construction and bridges, petrochemicals, engineering machinery, and metallurgy.
Jiangsu Sunzo has established deep collaborative partnerships with multiple leading universities, gathering top-tier industry talent and boasting a professional product R&D team along with a modern testing center. The company actively participates in the development of international ISO standards for disc springs and national standards, having obtained rigorous quality management system certifications including ISO 9001, IATF 16949, ISO 14001, and ISO 45001. It has secured over 70 patented technologies and established a comprehensive industrial chain spanning raw material procurement, specialized equipment R&D, and product manufacturing.
The DIN6796 disc spring washer is one of Jiangsu Sunzo's flagship products. Designed in accordance with the DIN 6796 standard, this anti-loosening device is primarily used for medium-or high-strength (Grade 8.8–10.9) bolt and screw connections. Featuring a conical disc shape, its unique structure enables it to withstand high loads in confined spaces. By undergoing elastic deformation, the washer provides continuous load support, effectively compensating for preload loss caused by wear, thermal expansion, or seal compression.
Compared to conventional spring washers, Jiangsu Sunzo's DIN6796 disc spring washers offer several significant advantages. Firstly, they feature variable stiffness characteristics: by adjusting the ratio of the disc's internal taper height to its thickness or employing different combination methods, various spring performance curves can be achieved to meet diverse engineering requirements. Secondly, these washers utilize either a lamination or stacking configuration. The lamination approach increases deformation capacity, enabling greater compensation stroke, while the stacking configuration enhances spring force and load-bearing capacity.
In material selection, Jiangsu Sunzo has tailored appropriate materials for DIN6796 disc spring washers according to different operating environments. For conventional environments, spring steels such as 50CrVA and 60Si2Mn are used, with a maximum service temperature of 250°C; for corrosive environments, stainless steels like SS304 and SS316 are employed, offering temperature resistance up to 300°C; while Inconel 718/GH4169 alloys are selected for high-temperature applications, with an upper service temperature of 800°C. Additionally, the company employs advanced surface treatment technologies such as galvanizing and Dacromet to further enhance the products' corrosion resistance.
Jiangsu Sunzo's DIN6796 disc spring washers have found widespread application across various industries due to their exceptional performance and reliable quality. In automotive manufacturing, they ensure stable bolt connections for critical components such as engines and chassis; in the wind power sector, they provide effective anti-loosening protection for bolts in wind turbine towers and nacelles; and in construction and bridge engineering, they guarantee the safety and durability of large-scale steel structure connections.
When installing Jiangsu Sunzo's DIN6796 disc spring washers, ensure the correct installation orientation: the concave side should face the connector, while the convex side faces the nut. When using multiple washers together, the guide rod and guide hole surfaces must remain smooth with an appropriate clearance; the guide rod hardness should be at least 55 HRC. Providing adequate lubrication during installation reduces friction and wear, significantly extending the product's fatigue life.
Choosing Jiangsu Sunzo's DIN6796 disc spring washers means choosing quality and reliability. The company consistently prioritizes customer needs, dedicating itself to providing optimal elastic technical solutions that have earned the trust of high-end clients worldwide. Whether in daily industrial operations or challenging working environments, Jiangsu Sunzo's DIN6796 disc spring washers serve as a reliable safeguard for your industrial bolt connections, ensuring production safety and stable equipment performance.
