Threaded rivets, also known as Rivnuts, are commonly used to:

Threaded rivets, commonly referred to as Rivnuts, are designed specifically to provide a strong, threaded connection for securing components to sheet metal. They create a threaded insert that allows screws or bolts to be fastened securely into materials that may not have sufficient thickness for a traditional threaded hole. This capability makes them ideal for applications where the base material is too thin or soft to hold threads on its own.

Using Rivnuts enables quick and repeatable assembly processes, particularly in applications that require disassembly or maintenance, as they allow components to be fastened without compromising the integrity of the sheet metal. This is crucial in aviation and automotive contexts, where maintaining structural integrity and weight efficiency is paramount.

The other choices do not accurately describe the purpose of Rivnuts. While welding is a common method of joining parts, it differs from the removable fastening that Rivnuts provide. Preventing corrosion and improving aerodynamic efficiency relate to factors other than how components are attached, which is the primary concern of Rivnuts.