These Marysino 410 stainless steel self-tapping screws are built for reliable fastening in metal, aluminum, plastic, and wood. Made from hardened 410 stainless steel, they provide excellent corrosion resistance, high strength, and magnetic compatibility for power tools. The hex head design with an integrated washer offers superior torque transfer, tight grip, and even pressure distribution to prevent surface damage. Each screw features a sharp self-drilling point that allows fast and clean installation without pre-drilling, saving time and effort. Precision threads deliver secure, vibration-resistant connections ideal for HVAC, roofing, ductwork, automotive repair, and general construction. Available in multiple sizes (including #8, #10, and #12 with lengths from 1/2 in. to 2 in.), these screws adapt to various project needs. Each pack includes 50 or 100 pieces in a durable reusable case for easy organization. Perfect for both professional contractors and DIY users seeking durable, rust-resistant fastening performance.