Premium Material Our mixed hexagon socket head cap screws and washers are made of high-quality metal material with smooth edges, offering good resistance to corrosion, rust, and oxidation, ensuring a long service life. Easy to Use These sets of nuts, bolts, and washers are easy to use. The threads are smooth, clean, and precise. The compact thread design helps prevent deformation and slipping during use. Easy to Store All M3, M4, M5, and M6 cap head screws, bolts, and nuts are stored in a separate plastic storage box, making them easy to organize, carry, access, and use. Ideal for replacing broken or missing screws. Wide Applications This package includes a variety of popular sizes of screws, nuts, and washers, widely used in machinery, furniture, automotive, motorcycle repairs, environmental protection equipment, communication equipment, electrical devices, electronic products, ship assembly, and DIY projects. What You Will Get You will receive 16 types of screws in sizes M3x6mm, M3x10mm, M3x14mm, M3x20mm, M4x10mm, M4x20mm, M4x25mm, M4x30mm, M5x20mm, M5x30mm, M5x40mm, M6x10mm, M6x20mm, M6x30mm, M6x40mm; 4 types of nuts; and 4 types of washers. Total weight is 900g, providing sufficient quantity for daily use and various needs.