An electrical connector includes, in an embodiment, an electrically-conductive blade and a receiving body allowing a secure connection through a twist-lock arrangement. The electrically-conductive blade may include a neck and one or more shoulders that have a shoulder-span. The receiving body may include a hole to receive at least a portion of the blade, the hole including a length that is less than the shoulder-span of the one or more shoulders of the blade, and may further include a bulging portion to allow rotation of the blade when the blade extends through the hole of the receiving body such that the neck of the blade is aligned with the bulging portion, the bulging portion including at least one stop to limit the rotation of the blade. An assembly method describes, in an embodiment, a method of assembling the aforementioned electrical connector.