Import Flat Washer — Buy in Bulk from Supplier in China

Flat washers from Zhejiang Ruian Zhufeng Standard Parts Co., Ltd are manufactured for mechanical and structural applications requiring consistent load distribution. They are available in standard sizes from 3mm to 40mm inner diameter, with outer diameters up to 70mm and thicknesses from 0.4mm to 4mm. Materials include stainless steel, brass, and nylon, with dimensional tolerances aligned with DIN and ISO standards. These washers are cold-formed and not heat-treated, preserving material integrity for high-volume use.

The nylon washers are made from acetal homopolymer, offering low friction and electrical insulation, commonly used in automation and light machinery. Brass washers are lead-free and comply with EU RoHS for non-ferrous applications. Stainless steel variants are austenitic, with no mention of specific grades like 304 or 316. Surface treatments are limited to passivation for stainless and natural finish for brass and nylon. No proprietary coatings or platings are claimed.

These washers are sourced by manufacturers of small appliances, electrical enclosures, and light automotive components. Buyers include distributors in Southeast Asia and Eastern Europe who require cost-effective, standard-size components. Trade terms include FOB Ningbo Port, with packaging in plastic bags within cartons. MOQ and lead time are not stated and must be confirmed per order. No certifications are verified on the listing.

Zhejiang Ruian Zhufeng Standard Parts Co., Ltd is located in Tangxia Town, Ruian City, Zhejiang Province, within the Xialin Industrial Zone. The supplier is classified as imported with harbor trust tier, indicating verified export documentation. The listing does not provide information on company history, workforce size, production volume, or certification status. It confirms manufacturing of flat washers and offers multiple material options, but no details on quality control processes or testing equipment are included.

Response rate and average response time are not recorded. No certifications such as ISO or SGS are verified on the listing. The supplier does not claim custom design, tooling, or OEM services. The product range focuses on standard flat washers, with mention of unusual types like saddle and denta washers, but no technical drawings or specifications for these variants are provided. Buyers should request samples and direct confirmation of material composition before bulk procurement.