The present invention relates to a tool head for a chip metal working tool having a cutting insert (3), comprising a basic holder (1) and an integral insert holder (4), the forward portion of which is provided with an insert pocket between a lower support portion (6) and an upper clamp portion (5) wherein the upper clamp portion (5) is actuatable by a press device. The characteristics is that the press diveice is in the shape of a clamp screw (19) with a conical head (18) that is received in a recess in the basic holder (1) and arranged to be subjected to displacement in its axial direction such that its conical head (18) upon insertion in a slit (20) spaced from the insert pocket achieves such bending outwardly of the upper portion of the basic holder such that thanks to its movement a clamping of the insert occurs.