Dome nut, also known as an acorn nut or cap nut, is a type of fastener that is designed to provide a secure and finished look to a threaded bolt or rod. It consists of a hexagonal nut with a domed top that covers the end of the bolt or rod. The dome shape helps to distribute the load more evenly and provides a smooth, finished surface that is less likely to snag on clothing or other objects. Dome nuts are commonly used in applications where appearance is important, such as in furniture, lighting fixtures, and automotive applications. They are available in a range of sizes, materials, and finishes to suit different applications and can be used with a variety of bolts and screws to provide additional strength and stability.