A "tornillo" is a type of fastener commonly known as a screw. It is typically made of metal and features a helical ridge, or thread, that allows it to be driven into materials like wood or metal. Tornillos are used to hold objects together securely and can be removed and reused, making them versatile in construction and repair. Tornillos come in various sizes and types, including wood screws, machine screws, and self-tapping screws. Each type is designed for specific applications, ensuring that they provide the necessary strength and stability for different projects. Proper use of tornillos is essential for effective assembly and durability.