Nuts are hardware devices that, when threaded onto a bolt or a threaded rod, secure or fasten components together. They come in various shapes and sizes, but most commonly, they are hexagonal in shape. The interior of a nut has a threaded hole that matches the external threads of the bolt or screw it is paired with. Nuts are a crucial part of fastening systems and are used in conjunction with bolts or screws to create a strong and secure connection. They are commonly made of metal, such as steel or brass, and can have various finishes, including plain, zinc-plated, or stainless steel. In summary, nuts play a vital role in construction, machinery, and various other applications by providing a means to secure components together using threaded fasteners.