This set of flat washers is made of copper for good electrical and thermal conductivity. Flat washers help distribute load, protect surfaces from damage, and provide insulation between steel screws and other materials. They can be used as spacers, wear pads, preload indicators, locking devices, and vibration reducers. Flat washers are typically used when the hole diameter is larger than the fastener’s shank or nut. This set includes multiple sizes to suit various applications. Each washer is a thin, disk-shaped plate with a central hole, designed to distribute the load of threaded fasteners such as screws or nuts. Washers support proper bolted joint performance by helping maintain preload after torque application. They also help prevent galvanic corrosion by isolating dissimilar metals. Type: Flat Washer Material: Copper Package Includes: 1 set of flat washers (as listed below) Dimensions and Quantities: M5 × 9 × 1 mm — 10 pcs M6 × 10 × 1 mm — 10 pcs M6 × 12 × 1 mm — 10 pcs M8 × 12 × 1 mm — 10 pcs M10 × 14 × 1 mm — 10 pcs M10 × 16 × 1 mm — 10 pcs M10 × 18 × 1 mm — 10 pcs M12 × 16 × 1 mm — 10 pcs M12 × 18 × 1.5 mm — 10 pcs M14 × 18 × 1 mm — 10 pcs M14 × 20 × 1.5 mm — 10 pcs M16 × 22 × 1.5 mm — 10 pcs M18 × 24 × 1.5 mm — 10 pcs M20 × 26 × 1.5 mm — 10 pcs M22 × 28 × 1.5 mm — 10 pcs Color: As shown Note: Actual color may vary slightly due to screen settings and lighting conditions. Dimensions are subject to a tolerance of ±1–3 mm.