Which type of fastener can mate with corresponding threaded parts?

The nut is a type of fastener specifically designed to mate with a corresponding bolt or screw that has a threaded shaft. This combination forms a secure assembly that is often used in various applications across many industries. The internal threads of the nut engage with the external threads of the bolt, allowing for a strong connection that can withstand tension and shear forces. This threaded interaction is fundamental in fastening systems, providing adjustable clamping forces and easy disassembly when necessary.

In contrast, the other options—washer, nail, and clip—do not have the capability to mate with threaded parts in the same way. A washer serves primarily as a spacer or to distribute load and does not have internal threads; a nail is a type of fastener that is driven into materials without relying on threads; and a clip typically secures components without threading and does not provide the same level of adjustability or strength that threaded fasteners can offer.