5pcs M3 M4 M5 M6 Brass Cross Countersunk Head Screw Nut Set with Elastic Washer Flat Copper Bolt Nut Washer Set, M4

High-quality materials: good extension strength and corrosion resistance in a variety of environments, no rust, sufficient hardness, durable Features: tight thread, uniform force, clear thread without burrs, deep thread, provide safe fixing with high tensile strength, not easy to deform and slide during use Easy to install: our screws conform to the standard metric system. It is not easy to slip off during installation, has high strength, does not deform, and is not easy to break Wide range of uses: screws are widely used in household and office electrical appliances, communication equipment, ship assembly, machinery industries, etc., other maintenance work, DIY crafts Buy with confidence: We are committed to providing customers with high-quality products and friendly services. If you have any questions about our products, please feel free to contact us