Hex nuts are small, hexagonal-shaped fasteners used to secure bolts and screws. They have internal threads that allow them to be screwed onto a bolt, creating a strong connection. Made from various materials like steel, brass, or nylon, hex nuts come in different sizes to fit various applications. These nuts are commonly used in construction, automotive, and machinery industries. They provide stability and support in assemblies, ensuring that components remain tightly fastened. When paired with a washer, they can distribute the load more evenly, reducing the risk of damage to the surfaces being joined.