Multiple Sizes - The self tapping screws kit come with 440 pieces encompassing 18 sizes and 2 head types, providing versatile solutions for your diverse needs. Stability and Durability - Crafted from premium 410 stainless steel materials, offering higher hardness, improved stability, and enhanced durability. Wide Applications - Whether you're a DIY enthusiast or a seasoned professional, the self tapping screws for metal is bound to be your thoughtful choice. Easy Organization - All self-tapping screws are housed within a robust transparent box equipped with secure locks and adjustable compartments. With sizes labeled accordingly, you can easily locate the needed size. 410 Stainless Steel These wood screws are made from premium 410 stainless steel, which has a higher carbon content than 304 stainless steel. This results in greater hardness and torque characteristics, making them ideal for long-term use. Smooth Threads The threads on these self tapping screws are smooth, intact, and sharp, distributing force evenly while resisting slipping and deformation. They lock and secure materials together by engaging with each other through their threads. Sharp Drill Tips Thanks to their sharp drill tips, pre-drilling is unnecessary. These sheet metal screws can be effortlessly installed manually or automatically using a drill, significantly minimizing your workload. These self drilling screws for metal have a wide range of applications in homes, office equipment, and industries. They are commonly used to fasten metal to wood, and even metal to metal. The stainless steel self tapping screws find utility in electronic products, household appliances, fixed components, mechanical repairs, and DIY projects.