Cap nuts are commonly used in various projects that require the joining of two or more elements. These nuts are designed to cover and secure bolts or screws, giving a finished and polished look. Depending on the material and size needed, cap nuts may also be known as acorn nuts, crown nuts, or dome nuts. Chrome cap nuts, for example, are used as a decorative feature for furniture, while stainless steel cap nuts are often used in marine or outdoor applications where corrosion resistance is critical. The term "hood nuts" may also be used to describe cap nuts, especially when they are used to secure the hood of a car.