NACX M5 Carbon Steel Flat Washer, Black Oxidized 4.8 Grade, 5mm ID, 10mm OD, 1mm Thick, Metal Alloy Steel Fasteners for Mechanical Industry, 500Pcs

["Sizes: Inside Diameter: 5mm / 0.19”; Outside Diameter: 10mm / 0.39\"; Thickness: 1mm / 0.039\"; Fits M5 fasteners.","Made of carbon steel material, black zinc plated on the surface, which have good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas.","Flat washers are mainly used to reduce pressure and friction, prevent leakage, isolate, loosening or disperse pressure.","These washers are used to distribute loads of threaded bolts, screws and nuts, provide a smooth-bearing surface.","Widely Application electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection."]