Item Type: Knurled Spring WasherMaterial: 304 Stainless Steel .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 15 Size Types: Knurled spring washer kit is available in 5 size types, namely M4 M5 M6 M8 M10, safe and practical. 2304 Stainless Steel: Knurled spring washers are made of 304 stainless steel for high strength and resistance to high temperature, cold and high humidity. 3Storage Box: All washers are packed in a strong and durable box, stored in specifications to prevent loss, and it is easy to find the right size washer. 4Corrosion and Oxidation Resistant: Serrated conical spring washers are corrosion resistant, rust proof and oxidation resistant, which can be done for longer term use. 5Wide Range of Uses: Knurled spring washers are widely used for interior decoration, outdoor construction, electrical maintenance and furniture repair.