Abstract: Lamp base contact plate for connecting a current lead-in wire of an electric lamp to a contact part of a lampholder, which contact plate being a pressed metal part of the lamp base and having a through bore for the lamp lead-in wire, is fixed firmly on an electrically insulating insert closing the end of a shell of the lamp base. The through bore for the lamp lead-in wire is formed as a first perforated bore (12) with torn skirt (20) protruding from the plane (L) of the contact plate (10) in a direction away from the insulator insert (30), and the contact plate (10), in addition to this first perforated bore (12), also includes at least two further perforated bores (14, 16, 18), each having a torn skirt (22, 24, 26) protruding from the plane (L) of the contact plate (10) in a direction opposite to the direction of the torn skirt (20) of the first perforated bore (12), towards the insulator insert (30).