rivetek
Rivetek is a term that can refer to a few different things, primarily a specific type of fastener and sometimes a brand name associated with such products. A rivet is a mechanical fastener that permanently joins two or more workpieces by being inserted into clamped holes and then deformed. The deformation, or "upsetting," expands the rivet to create a permanent head on the opposite side of the material. This process permanently fastens the components together.
In some contexts, "rivetek" might be used colloquially or as a specific product name to describe these