What is a common function of fasteners like screws and rivets?

Fasteners such as screws and rivets are primarily designed to join two or more components together securely. This function is essential in a wide range of mechanical and structural applications, where maintaining the integrity and stability of assemblies is crucial.

Screws achieve this by creating a tight fit through their threaded design, allowing for easy assembly and disassembly of parts without losing their holding capability over time. Rivets, on the other hand, are used to create permanent joints, which are ideal for applications where the connection needs to be strong and cannot be easily undone. Together, these fasteners ensure that different parts can function as a single unit, contributing to the overall durability and performance of the assembly.

The other options provided do not align with the primary purpose of fasteners. For example, while some materials used in specific fasteners might conduct electricity, this is not a common function of fasteners like screws and rivets. Similarly, they do not provide insulation against heat or function to provide lubrication in machinery.