Abstract: A plug-in connector element (10) has at least two contact plates (72, 74) formed by shaped electrically conductive sheet metal strips. Each contact plate has a connection portion (76) for the electrical connection of the plug-in connector element (10) to an electrical line (6), a contact portion (82) for a detachable electrical connection of the plug-in connector element (10) to an associated connecting element, and a compensating portion (80) arranged between the connection portion (76) and the contact portion (82) for a resilient deflection of the contact portion (82) with respect to the connection portion (76). The connection portion (76), the compensating portion (80) and the contact portion (82) are integrally formed from the sheet metal strips (72, 74). A plug-in connector part has a plurality of plug-in connector elements.