A5714 340 PCS 9 Sizes Black Carbon Steel Flat Washers Set

1. The product is packaged in a strong transparent plastic box with a specification label which is easy to store and easy to use.2. Made of carbon steel material with anti-oxidation surface not easy to rust and long service life.3. Function: Mainly used to reduce pressure and friction prevent leakage isolate loosen or disperse pressure.4. Scope of application: applicable to household and commercial electrical appliances with thread/bolt type connection electrical connection for automobiles and ships.5. Surface treatment: oxidation and blackening6. Material: 8.8 grade carbon steel7. Product specifications:M2?Inner diameter: 2mm Outer diameter: 4.5mm Thickness: 0.5mmM2.5?Inner diameter: 2.5mm Outer diameter: 5mm Thickness: 0.5mmM3?Inner diameter: 3mm Outer diameter: 7mm Thickness: 1mmM4?Inner diameter: 4mm Outer diameter: 9mm Thickness: 1mmM5?Inner diameter: 5mm Outer diameter: 10mm Thickness: 1mmM6?Inner diameter: 6mm Outer diameter: 12mm Thickness: 1.5mmM8?Inner d