Contact element which can be produced without burrs

An electrical contact element, comprising:

• at least one first region and at least one second region adjoining the at least one first region, wherein the at least one first region is provided at a plug-in end of the electrical contact element, which includes a tip of the contact element, wherein the at least one second region is provided at a base end of the of the electrical contact element, wherein adjacent to a boundary region where the at least one first region joins the at least one second region, the at least one first region is designed with a cylindrical or cylindrical-like shape, and the at least one second region is designed with a cuboid or cuboid-like shape having a first pair of opposing side faces and a second pair of opposing side faces that are wider than the first pair of opposing side faces, wherein a circumferential groove is provided between the at least one first region and the at least one second region, wherein the circumferential groove defines a root that is offset radially inward relative to each of a radially outward most surface of the at least one first region and a radially outward most surface of the at least one second region, wherein the circumferential groove has opposing groove sides in regions of the circumferential groove that correspond to where the first pair of opposing side faces of the cuboid or cuboid-like shape of the at least one second region adjoin the cylindrical or cylindrical-like shape of the at least one first region, and wherein the circumferential groove has a single groove side in remaining regions of the circumferential groove which presents as a bevel on the at least one first region.