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The invention is directed to an electrical connector having an outer metal shell with an inner dielectric insert and a central contact pin received within the dielectric insert. The outer metal shell has a mating end with forward passageway. The outer metal shell has a dielectric insert receiving passageway which is narrower than the forward passageway. A shoulder is disposed along the inner wall between the forward passageway and the dielectric insert receiving passageway. The shoulder being angled towards the forward passageway. The shoulder is deformable over the dielectric insert to secure the dielectric insert within the outer metal shell.