Connecting Thread
A connecting thread is a thread (internal or external) on a tool, component or holder used to create a detachable connection with a complementary component. It enables a secure and firm hold, for example for mounting a tool in a tool holder, spindle or adapter. Common connecting threads often conform to standardised metric ISO threads such as M10 or M12.
Practical example:
A tap with a standardised connecting thread can be screwed directly into a matching tool holder to produce precise threads.