A terminal fitting (T) has a rectangular tube (10) with a side plate (13R) and a receiving plate (35) that extends inwardly in a width direction from the front edge of the side plate (13R). A probe (P) can be brought into contact with this receiving plate (35). Thus, a contact area of the probe (P) along the width direction is wider than the thickness of the right side plate (13R). Thus, the probe (P) can be brought securely into contact with the rectangular tube (10) even if displaced along the width direction.
An electric plug-in connector includes a plug receptacle provided for insertion of a contact pin, a contact lamina pivotally mounted on the plug-in connector housing, its free end being directed in the insertion direction of the contact pin, and a holding arm pivotably mounted on the plug-in connector housing, which protrudes at its free end into the plug receptacle in the ready-to-insert starting state of the plug-in connector and also holds back the contact lamina that is prestressed into the plug receptacle, the contact lamina and/or the opposite housing wall being made of an electrically conducting material for contacting the inserted contact pins.