An electrical plug and socket connector assembly includes an electrical plug connector and an electrical socket connector each including an electrically insulative housing and conducting terminals inserted into respective insertion slots in the electrically insulative housing, the electrically insulative housing having springy hooks suspending in top and bottom sides in each insertion slot, each conducting terminal of each of the electrical plug connector and electrical socket connector defines two side panels spaced by a gap, multiple fins extended from top and bottom edges of the side panels and suspending in top and bottom sides of the gap and hooked in the insertion slots by the springy hooks, and two contact end portions respectively forwardly extended from respective opposite ends of the two side panels.