DIN 6796 Disc Spring Washers and DIN 2093 Disc Springs: Two Components with

DIN 2093 is the product standard for disc springs. As independent elastic elements, disc springs are used for energy storage, buffering, and load application in applications where axial space is limited. They are commonly employed in mechanisms such as valves and clutches, serving as a critical component of mechanism design and fulfilling specific elastic functions.

Disc springs require specialized design based on the load-deformation characteristic curve. When selecting a suitable type, attention should be paid to elastic parameters such as stiffness, travel, and fatigue life. They are functional components in mechanical design, have no direct relationship with the anti-loosening requirements of bolted connections, and possess a well-defined application scope.

In engineering practice, disc springs are commonly employed in stacked, paired, or composite configurations, allowing engineers to achieve desired stiffness and stroke characteristics through various combinations and offering greater design flexibility. This also means that the selection process for disc springs is highly specialized—typically led by mechanical design engineers—and operates under a distinct framework compared to the selection of fasteners.

From a manufacturing perspective, disc springs and disc spring washers exhibit distinct material selection priorities: springs focus primarily on fatigue performance and stiffness curves, whereas washers emphasize hardness and anti-loosening compatibility. Furthermore, the key process control considerations differ between the two components, making the specialized division of labor among suppliers a critical consideration.

DIN 6796 is the standard for disc spring washers. These products are directly used to prevent loosening and provide preload in bolted connections, serving as an essential component in fastening systems. When used in conjunction with bolts and nuts, they constitute fastening accessories that ensure connection reliability.

Its flattening force design must be matched with the bolt clamping force—typically corresponding to 70%–90% of the clamping force of Grade 8.8 or Grade 10.9 bolts—to ensure that the washer operates elastically within the bolt preload range, thereby providing active anti-loosening performance. This design rationale is fundamentally different from that of a disc spring.

The selection of disc spring washers is relatively standardized. It is primarily determined by the bolt specifications, grade, and operating conditions, with appropriate material selection and surface treatment chosen accordingly. Their installation and application are similar to those of conventional fasteners, and they impose lower professional requirements on designers compared to disc springs; consequently, they enjoy wider adoption.

For projects requiring both types of products, it is recommended that a single supplier possessing manufacturing capabilities for both product types provide integrated support. This approach facilitates technical communication and quality coordination, while also helping to avoid supply errors caused by misunderstandings of the relevant standards.

Disc springs focus on elastic parameters such as stiffness, travel, and fatigue life, whereas disc spring washers prioritize hardness, anti-loosening performance, and installation compatibility. Although these two product types share similar structures, their performance design philosophies are fundamentally different. They cannot be simply interchanged, and strict differentiation must be maintained during procurement.

For DIN 6796 washers, high-elasticity spring steels such as 65Mn, 60Si2MnA, and 50CrVA are preferentially used, with hardness typically maintained between 420 and 510 HV to ensure long-term anti-loosening and fracture resistance properties. Clear quality specifications are also required; however, these specifications differ in their key focus from those for disc springs.

From the perspective of tolerances, the control of thickness and cone angle in washers directly affects the consistency of the flattening force; in contrast, disc springs exhibit greater sensitivity to their free height and load accuracy. The key inspection criteria for these two components differ during manufacturing and quality control phases—a critical consideration when selecting procurement channels and establishing acceptance standards.

For inventory management, it is recommended to assign separate codes to the two types of products, store them in separate locations, and clearly indicate the applicable standards and intended uses on their labels. This approach eliminates the risk of product mix-up during warehousing, thereby ensuring the accuracy of on-site assembly.

Disc springs are used for elastic loading in mechanical systems—such as clutch clamping, valve reset, and energy storage via damping. Disc spring washers, on the other hand, are employed to prevent loosening and provide preload compensation in bolted connections—particularly in heavy-duty applications such as construction machinery, wind power systems, and bridges. Given their fundamentally different application scenarios, the selection criteria for these components also differ accordingly.

These components share structural homology but serve different purposes. When procuring, first clarify the intended use—whether they are to be used as mechanical elastic elements or as anti-loosening washers for bolts—then select the appropriate standard. This approach prevents the procurement of incorrect products, which could lead to waste or delays in project progress.

For enterprises using both types of products simultaneously, it is recommended to differentiate between them through material coding and drawing annotations—for example, explicitly specifying "gasket" or "spring" in the part name, along with the applicable standard. This approach helps mitigate the risk of misuse from a management perspective and reduces errors during on-site assembly.

For export projects, drawings are typically annotated in accordance with international standards. Establishing the correspondence between DIN 6796 and DIN 2093 can reduce translation and interpretation errors. Suppliers can also provide standard reference support, facilitating smoother communication in international projects.

Jiangsu Sunzo Spring Elastic Technology Co., Ltd. possesses manufacturing capabilities for both disc springs and disc spring washers, covering a wide range of materials including 1074, 65Mn, 51CrV4, SUS302/304/316, 17-7PH, and Inconel 718. Its comprehensive product portfolio enables it to meet the requirements for both categories of products.

The company can supply products in accordance with standards such as DIN 2093, DIN 6796, and GB/T 1972, and also offers customized solutions. We provide customers with precise product selection recommendations across these two product categories, thereby mitigating procurement risks arising from conceptual confusion, and delivering professional and reliable services.

As an enterprise actively involved in the development of both domestic industry standards and international ISO standards in relevant countries, Jiangsu Sunzo possesses a profound understanding of the standards governing these two categories of products. This expertise enables the company to help clients delineate their requirement boundaries during technical communications, thereby preventing the issue of "selecting the wrong standards" at the source and enhancing the first-pass approval rate of procurement processes.

Engineers at Jiangsu Sunzo can assist customers in identifying application scenarios for two categories of products, provide tailored recommendations based on the specific equipment architecture, and transform standard-level differences into clear, actionable selection guidelines.

When requesting a quote, it is recommended to clearly specify the intended use of the product (e.g., bolt anti-loosening or mechanical elastic loading), the applicable standard (DIN 6796 or DIN 2093), as well as the bolt specifications and operating conditions. The more complete the information provided, the more accurate the solution offered by the supplier will be, and the higher the efficiency of the communication process.

If you are unsure about the specific criteria, you may provide the supplier with assembly drawings or a description of the application scenario, and have professional personnel assist you in making an assessment. Jiangsu Sunzo offers technical consulting services to help customers quickly define their requirements, select the appropriate products, and reduce the costs associated with repeated communications.

For bulk procurement, it is recommended that the technical agreement explicitly define acceptance criteria and inspection items—such as hardness ranges, load tolerances, and surface treatment requirements—so that both the supplier and the buyer reach a mutual agreement prior to commencement of work. This approach helps avoid disputes during mass production, thereby ensuring delivery quality and adherence to schedule.

At the training level, it is recommended to provide identification training for procurement, design, and assembly personnel regarding the two types of products, utilizing physical comparisons to enhance their understanding, thereby mitigating quality issues arising from conceptual confusion through improved personnel competency.

• Confirm the function first: mechanical elastic loading points to DIN 2093 disc springs; bolt anti-loosening points to DIN 6796 disc spring washers.
• Match the standard to the application: never substitute one standard for the other based on appearance alone.
• Separate inventory and coding: distinct part numbers, storage locations, and labels prevent mix-ups during assembly.
• Provide complete quotation data: intended use, standard, bolt specifications, and operating conditions improve selection accuracy.
• Leverage supplier expertise: a manufacturer producing both product types can support technical communication and quality coordination.