Washer is a fastener's part that helps to increase friction force. We produce under both ISO and JIS standards and also provide special sizes such as small, large, and thick types. We have various materials including Steel (SPCC) for normal type and S45C(H) for thick type with Zinc Cr+3, GEOMET, HDG Plating. Moreover, SUS304, SUS316L, Brass, Copper, and Nylon are also available. There is no minimum order quantity required and we offer fast delivery.