A set of tools designed to restore damaged or stripped internal screw threads conforming to the international metric standard. These kits typically contain taps, inserts (often helical coils or solid bushings), insertion tools, and sometimes a thread gauge. For instance, if a bolt hole in an engine block has been stripped, such a kit can be used to create a new, stronger thread to accept the original bolt size.
The primary advantage lies in salvaging components that would otherwise be rendered unusable, thereby saving time and money on replacement parts. This approach is crucial in maintenance and repair environments, particularly in automotive, aerospace, and manufacturing industries where metric fasteners are prevalent. The development of these kits has significantly reduced downtime and facilitated efficient repairs in critical applications.
