High quality stainless steel flat washer. Durable stainless steel material that lasts for a long time. Different sizes Flat Washers: M2 50PCS, M2.5 50PCS, M3 50PCS, M4 50PCS, M5 50PCS, M6 50PCS, M8 40PCS, M10 20PCS, to meet different needs. It is a very essential hand tool for the family. With Flat Washers, the spring washer device is used under the nut to prevent the nut from loosening. Spring washers are used for loosening, flat washers have no loosening function, and flat washers only increase the contact area. Quality Design: With a plastic storage box, it is easy to classify these flat washers by size and find the ones you need. Wide Application: Perfect for electrical connections on household and commercial appliances, automotive and marine uses. Product Description 360Pcs Stainless Steel Washers Set (8 Sizes) This kit contains: - Our set includes M2 X 50PCS, M2.5 X 50PCS, M3 X 50PCS, M4 X 50PCS, M5 X 50PCS, M6 X 50PCS, M8 X 40PCS, M10 X 20PCS. Durable Spring Washers Kit Durable and rustproof flat washer set. Stainless steel flat washer flat sealing ring assortment kit. Package box Come with a plastic storage box for storage. Package box these small grids are individually separated, which allows you to easily take out different size flat washers. Function Flat washers are intended to increase the surface area of the screw, a buffer to prevent the screw from loosening, intended for general use under the head of a bolt. Used to reduce friction, isolation and prevent loosening or dispersion.