Steel nails are small, pointed metal fasteners made primarily from steel. They are commonly used in construction and woodworking to join materials together, providing strength and durability. Steel nails come in various sizes and types, including common nails, finishing nails, and brad nails, each designed for specific applications. The manufacturing process of steel nails involves shaping and hardening the metal to ensure they can withstand significant force without bending or breaking. They are often coated with materials like galvanization to prevent rust and corrosion, making them suitable for both indoor and outdoor use.