280pcs M5-M20 Copper Flat Washers 12 Sizes, Flat Washer with Storage Box for Screw Sealing, Sealing Rings

General description Copper flat washers are essential components for various DIY and home improvement projects. This set includes 280 pieces of flat washers in 12 different sizes, providing a versatile solution for screw sealing and ensuring a secure fit in your applications. Technical specifications Sizes included: M5, M6, M8, M10, M12, M14, M16, M20 Dimensions and quantities: M5: ID 5mm, OD 9mm, Thickness 1mm - 30 pieces M6: ID 6mm, OD 10mm, Thickness 1mm - 30 pieces M6: ID 6mm, OD 12mm, Thickness 1mm - 20 pieces M8: ID 8mm, OD 12mm, Thickness 1mm - 30 pieces M8: ID 8mm, OD 14mm, Thickness 1mm - 20 pieces M10: ID 10mm, OD 14mm, Thickness 1mm - 30 pieces M12: ID 12mm, OD 16mm, Thickness 1mm - 25 pieces M14: ID 14mm, OD 18mm, Thickness 1mm - 25 pieces M12: ID 12mm, OD 18mm, Thickness 1.5mm - 20 pieces M16: ID 16mm, OD 20mm, Thickness 1.5mm - 20 pieces M16: ID 16mm, OD 22mm, Thickness 1.5mm - 15 pieces M20: ID 20mm, OD 26mm, Thickness 1.5mm - 15 pieces Other information Includes a