Acorn Nuts & Cap Nuts

Acorn nuts, also known as cap nuts or dome nuts, are a type of nut that has a domed top and a slightly pointed end, hence their name. AFT offers acorn nuts that meet SAE J483 or DIN 1587 standards. 

Frequently Asked Questions About Acorn Nuts

What are acorn nuts used for?

Acorn nuts are commonly used in furniture, automotive parts, and decorative hardware. They are designed to cover exposed threads at the end of a bolt or screw, providing a finished appearance and reducing the risk of injury. This makes them perfect for any applications where aesthetics and/or safety are a high priority. 

What is the difference between an acorn nut and a standard hex nut? 

Standard hex nuts are flat-topped, whereas acorn nuts have a dome shape that gives them a more streamlined and visually appealing look. 

What is the difference between a low crown and high crown acorn nut? 

A low crown acorn nut is the standard version of an acorn nut. They are typically manufactured in two pieces (a hex nut and an acorn-shaped top) with a zinc die cast to form the finish nuts. High crown nuts are a taller and wider variant of a low crown acorn nut.

What sizes do acorn nuts come in?

AFT offers acorn nuts in both metric and SAE sizing. Diameter-thread sizes range from #4-40 to 1-1/2”-6 or M3-0.50 to M24-3.00. 

What materials and finishes are acorn nuts available in? 

Acorn nuts are made of steel, brass, aluminum, or stainless steel. One-piece acorn nuts are typically made from stainless steel. Available finishes include chrome, nickel, plain, polished, or zinc Cr+3. Choosing a zinc finish or a stainless steel nut provides additional corrosion resistance. 

Acorn Nut & Cap Nut Resources