Cap nuts, or acorn nuts, are hex nuts with a domed top. They cover the end of the bolt tip, which protects the threads and provides a finished appearance. Since protruding bolt tips can catch skin or clothing, use of cap nuts can also help to prevent injury.

• • Size: #8-32
• • Domed top covers and protects threads
• • Creates a finished appearance
• • Also known as an acorn nut
• • Exposed threads should not be longer than inside height of cap nut