Metal drilling tool

A metal drilling tool to introduce holes into metal workpieces through chip-removing comprising:

• a middle axis;
• a circumferential surface;
• a front side and an opposite end;
• at least two primary cutting edges arranged in a region of the front side, each primary cutting edge having a first clearance surface, the first clearance surfaces dropping off from the at least two primary cutting edges at a first clearance angle in a direction of the opposite end and extend from the circumferential surface over the front side, the at least two primary cutting edges lie on an imaginary first conical surface that is arranged so as to be concentric with the middle axis and has a first cone angle that opens up in the direction of the opposite end and is no more than 180°;
• and
• a centering portion having at least three edges, at least three side surfaces, and an imaginary base surface, the centering portion provided without a chisel edge, at least two of the edges lie on an imaginary second conical surface that is arranged so as to be concentric with the middle axis and has a second cone angle that opens up in the direction of the opposite end, the second cone angle being smaller than the first cone angle, such that that the imaginary second conical surface protrudes from the front side,
• wherein the at least two primary cutting edges each have an outer first cutting edge portion and an adjoining inner second primary cutting edge portion, each of the at least two primary cutting edges extending to at least one edge of the centering portion, and
• wherein the drilling tool is a metal drilling tool.