What is another name for a cap nut?

• A. Hex nut
• B. Acorn nut
• C. Castle nut
• D. Wing nut

Answer: (B)

A cap nut is commonly referred to as an acorn nut due to its distinctive shape, which resembles the acorn fruit. This type of nut is characterized by its rounded top and hexagonal base, which provides a clean and finished look when used in applications. Cap nuts are designed to cover the exposed ends of a bolt, preventing damage and reducing the risk of injury from sharp edges. This design feature helps in terms of safety and aesthetic appeal.

The other terms refer to different types of nuts with specific features: a hex nut is a six-sided nut used in many fastener applications, a castle nut has a notched design that allows a cotter pin to secure it in place, and a wing nut is designed with wings to facilitate easy hand-tightening. Use of the term "acorn nut" highlights the specific application and style of cap nut, emphasizing its function and appearance.