Abstract: The plug-in section of this contact piece intended for a plugging into a bore in an electrical circuit plate has a substantially Y-shaped cross-section with two elastically bendable U-legs and a web interconnecting same. Seen in cross-section of the plug-in section the web has a thickness exceeding the thickness of each U-leg. At its surface facing away from the U-legs the web is provided with a rib extending in the plugging-in direction. When the plug-in section is plugged into a bore of a circuit plate the rib and the end sections of the two U-legs located at the outside thereof will contact abuttingly the circumference of the bore whereby the U-legs are bent elastically towards each other such that the contact piece attains an impeccable fit in the bore. The plug-in section is produced preferably by an extrusion molding in a molding die such that specifically sharp edges at the plugging-in section are avoided.