An electrical connector includes: a male connector comprising a wire connection portion configured to be connected to a wire, and a pin connection portion configured to contact a conductor pin in an electrically conductive manner; a collar comprising a collar cylindrical body portion and a collar outer flange having a first surface and a second surface; a nut comprising a nut cylindrical body portion and a nut inner flange having a first surface that faces the second surface of the collar outer flange; a first seal that surrounds the collar cylindrical body portion and is positioned between the second surface of the collar outer flange and the first surface of the nut inner flange; and a second seal that surrounds the pin connection portion of the male connector and is positioned between an end surface of the nut cylindrical body portion and a first surface of the wire connection portion.