Which statement correctly describes bolts in relation to nuts?

• A. Bolts are used with a nut
• B. Screws are used with a nut
• C. Bolts are decorative fasteners
• D. Screws do not require threads

Answer: (A)

The key idea is how a bolt works with a nut to create a secure clamp. A bolt has external threads and a head, while a nut has matching internal threads. When the bolt passes through holes in the parts and the nut is tightened onto the bolt, the parts are pulled together, and the clamp is secured. This pairing is what makes a bolt-and-nut joint reliable for joining components, with a washer often used to spread the load and protect surfaces.

The other statements don’t fit because screws are not the standard mate for a nut in typical bolt-and-nut assemblies; screws are usually designed to cut into material or to engage pre-formed threads in the material itself, rather than relying on a separate nut. Bolts aren’t decorative; their purpose is functional. And screws do require threads—their defining feature is the threaded shank, whether they join into material or into a nut in certain applications.