M3 Stainless Steel Machine Screw Bolts (20pcs) - High-Quality, Corrosion-Resistant Fasteners with Round Hex Head for Industrial Applications. Perfect for construction, DIY projects, or manufacturing components, these 304 stainless steel machine screw bolts are durable and long-lasting. Enjoy the benefits of our premium fasteners, including resistance to rust and corrosion, making them ideal for use in harsh environments.