refrigerant conveying system

The invention relates to a connection point (1) on a refrigerant-carrying component, in particular on a refrigerant line (10), for connecting a threaded insert element (2) to an aluminum base (3), wherein the threaded insert element (2) has an external thread (6) made of a material which has a higher strength than aluminum and/or a different thermal expansion than aluminum, and wherein a threaded sleeve (5) is arranged in the aluminum base (3), into which the threaded insert element (2) can be screwed with its external thread (6). This makes a long-term tight connection between the threaded insert element (2) and the aluminum base (3) possible.