The MYWISH 540-Piece Metric Screw Assortment Kit offers a versatile selection of M3, M4, and M5 flat head socket cap screws, paired with matching hex nuts. Manufactured from high-quality 304 stainless steel, these screws feature a countersunk flat head design with Allen hex drive, ensuring a flush and secure fit in a wide range of precision applications. This comprehensive kit comes neatly organized in a durable, reusable transparent storage case, clearly labeled for easy access and quick size identification. Ideal for machinery, electronics, furniture assembly, and DIY projects, this set is an essential addition to any professional or home toolbox.