Eventus by Exact Threading Tools Threaded insert 630851 - Eventus by Exact 40406, Manufactured by Eventus by Exact, this M6 threaded insert is designed for thread repair applications. The 40406 model features robust construction to ensure reliable and long-lasting repairs. It is typically used to restore stripped or damaged threads to their original state. Eventus by Exact 40406 Threaded Insert M6 Stainless Steel for Repairing Threads