A replaceable face-milling head configured for rotating about a central rotation axis A R defining opposite axially forward and rearward directions D F, D R and opposite rotational preceding and succeeding directions D P, D S, the preceding direction D P being the cutting direction, the face-milling head comprising: a head rear face, a head front face and a head peripheral surface extending from the head rear face to the head front face; a shank-connector portion formed with external threading and extending forward from the head rear face; a cutting portion integrally formed with the shank-connector portion; and a perpendicular plane P P at the head front face and extending perpendicular to the central rotation axis A R; the cutting portion comprising: a plurality of integrally formed teeth, each of the teeth comprising a primary cutting edge at the head front face; a plurality of flutes alternating with the plurality of teeth; and a cutting portion diameter D E; characterized in that the cutting portion extends forward from the shank-connector portion to the head front face and comprising a rearwardly facing cutting portion annular surface surrounding the shank-connector portion, an intersection where the shank connector portion and the cutting portion meet being located at an axial location along the central rotation axis where the shank-connector portion and the rearwardly facing cutting portion annular surface are located; the face-milling head comprises a cutting portion length (L C) measurable parallel to the central rotation axis (A R) from the intersection to the head front face, and a length-diameter ratio LDR defined as the cutting portion length L C divided by the cutting portion diameter D E fulfills the condition: 0.3 ≤ LDR ≤ 1.00. a head rear face, a head front face and a head peripheral surface extending from the head rear face to the head front face; a shank-connector portion formed with external threading and extending forward from the head rear face; a cutting portion integrally formed with the shank-connector portion; and a perpendicular plane P P at the head front face and extending perpendicular to the central rotation axis A R; the cutting portion comprising: a plurality of integrally formed teeth, each of the teeth comprising a primary cutting edge at the head front face; a plurality of flutes alternating with the plurality of teeth; and a cutting portion diameter D E; a plurality of integrally formed teeth, each of the teeth comprising a primary cutting edge at the head front face; a plurality of flutes alternating with the plurality of teeth; and a cutting portion diameter D E; characterized in that the cutting portion extends forward from the shank-connector portion to the head front face and comprising a rearwardly facing cutting portion annular surface surrounding the shank-connector portion, an intersection where the shank connector portion and the cutting portion meet being located at an axial location along the central rotation axis where the shank-connector portion and the rearwardly facing cutting portion annular surface are located; the face-milling head comprises a cutting portion length (L C) measurable parallel to the central rotation axis (A R) from the intersection to the head front face, and a length-diameter ratio LDR defined as the cutting portion length L C divided by the cutting portion diameter D E fulfills the condition: 0.3 ≤ LDR ≤ 1.00. the cutting portion extends forward from the shank-connector portion to the head front face and comprising a rearwardly facing cutting portion annular surface surrounding the shank-connector portion, an intersection where the shank connector portion and the cutting portion meet being located at an axial location along the central rotation axis where the shank-connector portion and the rearwardly facing cutting portion annular surface are located; the face-milling head comprises a cutting portion length (L C) measurable parallel to the central rotation axis (A R) from the intersection to the head front face, and a length-diameter ratio LDR defined as the cutting portion length L C divided by the cutting portion diameter D E fulfills the condition: 0.3 ≤ LDR ≤ 1.00.