- The product adopts high quality steel, sturdy and durable. - The surface is treated with oxidation and blackening, which is beautiful and anti-rust. - These flat washer provides a bearing surface for fastener load distribution and resistance to abrasion. - Widely used in power equipment, electronic machinery, mechanical equipment, household appliances etc. ProductSiteLaunchDate : 2021-09-25T05:55:21.085Z UnitCount : 1 UnspscCode : 40141700 WasherType : Flat