Countersunk Washer Screw Pack of 50 Pieces in Pure Copper for (M4)

【Precision Countersunk Washers】Our countersunk washers, designed for precise screw fastening, offer standard concentricity and a smooth outer finish, ensuring an exact fit with your bolts. The large bearing surface provides a firmer, more secure lock, preventing loosening over time and enhancing the stability of your assemblies. 【Premium Pure Copper】Made from high-quality pure copper, these flat washers offer exceptional resistance to corrosion, moisture, and oxidation. Unlike standard washers, they won't degrade or rot, providing remarkable durability even in demanding environments. A reliable choice for your long-lasting projects. 【Multiple Versatile Uses】These screw washers fit a wide range of materials, making them the ideal solution for countless projects. Whether for hardware fastening, industrial assembly, or marine applications, their versatile design ensures consistent performance on various surfaces. 【Compact and Lightweight Design】Each screw washer is small and lightweight, making them extremely easy to handle, install, and transport. Their compact size does not compromise their strength, providing a practical solution for both professionals and DIY enthusiasts. 【Complete Set of Sizes】This set includes 50 pieces in sizes ranging from M3 to M6, each with a 90° countersink angle. The available diameters (M3, M4, M5, M6) cover a wide range of common bolts, ensuring you have the right washer for every specific fastening need.