An electrical connector includes an insulating housing. The insulating housing has an inner wall, a first end, and a second end. The inner wall of the insulating housing defines a cavity and a groove, the groove including a groove wall, the groove wall extending from the cavity radially into the insulating housing to a groove depth. The electrical connector also includes an electrical component in the cavity; an electrically conductive shell at an outer surface of the insulating housing; and a plug in the housing, the plug including a body and projection that radially extends from the body, the projection being received in the groove, where the groove wall applies more than 35 pounds (lbs) of force on the plug in a direction that is toward the electrical component.