Repair stripped screw threads or reinforce tapped holes with helical inserts. Wind them into place and their coils grip into the walls of holes for a tight hold. Make sure you have the right thread insert tools to help you easily install and remove screw inserts. A thread repair or installation kit can also come in handy as they contain all the tools you need to get the job done. When adding threads to materials that are too delicate for hole tapping, use rivet nuts which can be anchored from one side to for a flange.