What is a fastener?

A fastener can be a loose screw, washer or nut. But in the sheet metal industry we also have many types of fasteners that are pressed into the sheet metal. They are installed in special machines directly in the sheet metal and you get different threads, nuts or screws that you don't have to worry about falling off or disappearing. It is often easier to assemble in the end if these are fixed to the sheet metal.