Abstract: A nozzle assembly, for laser cutting heads, which includes a connection which easily, inexpensively, and removably connects a conductive insert to an insulating receptacle. A conductive nozzle can then be threaded into the conductive insert. The insulating receptacle includes holes through an annular cross section thereof. One hole receives a conductor pin having a head at one end and threads at the other. The other holes each have a larger diameter portion and a smaller diameter portion that receive a screw head, and a screw shaft, respectively. The screws and the threaded end of the conductor pin are then screw threaded into holes, which have complementary threads, in the conductive insert to connect the conductive insert to the insulating body. Such a connection thus allows damaged or worn parts to be easily replaced which thereby reduces cost of the nozzle assembly.