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Black Carbon steel 8.8 grade Flat Washers M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M14-M30Description:★ Material: Made of alloy steel, featuring high hardness, low-temperature strength, and corrosion resistance.★ Sizes: Available in 16 sizes of flat washers: M2, M2.5, M3, M4, M5, M6, M8, M10, M12 to M30.★ Function: Flat washers are primarily used to reduce pressure and friction, prevent leaks, provide isolation, prevent loosening, or distribute pressure.★ Black oxide coating: These stainless steel washers are treated with a black oxide coating, meeting specifications, resulting in a smooth appearance and enhanced corrosion resistance and wear resistance.★ Application: These metal washers are ideal for both household and industrial external applications, such as screw washers or external bolt washers, to increase load-bearing capacity and protect the material beneath the washer. BrandUnbrandedMPNDoes Not ApplyMaterialCarbon SteelSystem of MeasurementMetricTypeFlat WasherItem Thickness0.5mm~4mmGrade8.8Item DiameterM2~M30FinishBlack OxideCountry/Region of ManufactureChinaHole Size2mm~30mmModelBlack Flat Washers Grade 8.8