- High-Quality Materials: Our self-tapping screws are crafted from premium carbon steel, ensuring strength and durability. The accompanying expansion nuts are made of robust plastic. Both components are rust-proof and corrosion-resistant, featuring a smooth surface that is free of burrs. This design prevents deformation and guarantees a long service life. - Complete Set: Each package includes 30 pieces of M5 x 16 mm self-tapping screws and 30 expansion nuts, providing ample quantity for various projects. - Deep Thread Design: Engineered with precisely designed threads, our screws offer reliable attachment for a variety of applications. The flat-headed design ensures secure mounting of dowels and wood, making them ideal for use in ceilings and more, while minimizing the risk of slippage. - Versatile Applications: These screws are perfect for a wide range of uses, including installation of car mudguards, wheel covers, bumpers, and grilles. They are also suitable for furniture assembly, appliance repair, toy construction, and electronics projects. - Compatibility and Performance: The M5 x 16 mm size fits a variety of standard applications, making them a practical choice for both professionals and DIY enthusiasts. The high-quality construction ensures consistent performance across all applications.