Import Disc Spring Washer (Din6796) — Buy in Bulk from Supplier in China

The Disc Spring Washer (DIN6796) supplied by Yangzhou Sunzo Spring Ind.Co., Ltd. is a precision-formed conical washer designed to absorb shock, compensate for thermal expansion, and maintain preload in bolted assemblies. It conforms strictly to DIN6796 standards for geometry, load-deflection curves, and material requirements. Available materials include 60Si2MnA, SUS301, SUS304, SUS316, and 17-7PH, each selected for specific mechanical and environmental performance. Dimensions are manufactured to standard tolerances for inner and outer diameters, thickness, and cone angle as defined in the DIN specification.

These washers are typically produced from cold-rolled strip stock, heat-treated to achieve the required hardness and resilience. The material 60Si2MnA is a silicon-manganese spring steel commonly used in China for high-stress applications, offering a balance of strength and fatigue resistance. Stainless variants like SUS304 and SUS316 provide corrosion resistance for humid or chemically exposed environments. Surface finish is usually plain or phosphate-coated unless otherwise specified; no plating is implied unless confirmed by the supplier.

End users include automotive suspension systems, aerospace actuation components, and heavy machinery with high-vibration environments where consistent clamping force is critical. Buyers typically source these for replacement parts, OEM production, or maintenance kits. Packaging is usually bulk in corrugated cartons or inner plastic bags with protective separators. Trade terms are flexible but require direct confirmation with the supplier regarding minimum order quantities, lead times, and Incoterms such as FOB Shanghai or CIF destination port.

Yangzhou Sunzo Spring Ind.Co., Ltd. is a manufacturer based in Yangzhou, Jiangsu Province, China, with a registered address at Room 501, #428 Kaixuan Building. The company is listed as an imported supplier with harbor-level trust verification, indicating active export activity and compliance with basic export documentation. The supplier profile does not disclose company size, years in operation, or client names, and response metrics are not available on the listing.

The business focuses on precision spring components, including disc springs, Belleville washers, and custom-formed springs. It does not claim ISO certification, in-house testing labs, or third-party quality audits. Production appears to be capacity-driven with standard tooling for DIN and GB standards. Buyers should request material certificates and load test reports directly before placing orders, as no certifications are stated in the listing.