Electrode and
nozzle that seat within a retaining member and in two different seating locations relative to retaining member. The
electrode and
nozzle each include an interwoven-double-start thread having two thread cuts, which start 180 degrees from one another as measured around the circumference of the
electrode or
nozzle. Additionally, the retaining member includes an interwoven-double-start thread having two thread cuts, which start 180 degrees from one another as measured around the circumference of the
electrode or nozzle. Because of the configuration of the interwoven-double-start threads, the two seating locations of the electrode and nozzle are 180 degrees apart thereby enabling the electrode and nozzle to be used twice as long as conventional electrodes and nozzles which include a single
cut thread. Further, the electrode, nozzle, and retaining member include
mating frustum surfaces, which are configured and dimensioned so that the electrode and nozzle seat within the retaining member with less than one turn of the electrode and nozzle relative to the retaining member. Therefore, the electrode and nozzle may be quickly inserted in, and removed from, the retaining member. Moreover, the
mating frustum surfaces, and interwoven-double-start threads provide a large area of contact between the electrode and nozzle and retaining member hence providing a strong connection, as well as reducing resistance heating, therebetween.