Two-piece high-strength screw

A high-strength screw (1), with

• a head (2) with a tool engagement contour (4),
• a shank (3) with a free end (5) pointing away from the head (2),
• wherein a threaded section (6) with a thread (7) is arranged on the shank (3), wherein the thread (7) is formed as a metric ISO thread or inch thread,
• wherein the head (2) and the shank (3) are formed as materially separate parts, wherein the head (2) and the shank (3) comprise a high-strength material with a tensile strength of at least 800 N/mm2,
• wherein the head (2) has a coupling recess (8) that is at least partly conical and arranged radially inside with an axial force transmission element (9) and a torque transmission element (10), wherein the axial force transmission element (9) and the torque transmission element (10) are formed as a single piece with the head (2),
• wherein the axial force transmission element (9) and the torque transmission element (10) are axially separated from each other in an extension direction of the shank (3),
• wherein the shank (3) has a coupling element (11) arranged radially outside on its outer circumference with an axial force transmission counter element (12) and a torque transmission counter element (13),
• wherein the coupling element (11) engages in the coupling recess (8),
• wherein the axial force transmission element (9) and the axial force transmission counter element (12) are designed and arranged to positively interlock in such a way that an axial transitory movement of the head (2) relative to the shank (3) in the direction away from the free end (5) of the shank (3) is prevented non-releasably, and
• wherein the torque transmission element (10) and the torque transmission counter element (13) are designed and arranged to interlock in such a way that a rotational movement of the head (2) relative to the shank (3) in the tightening direction of the thread (7) is frictionally prevented.