Method for Producing Screws and Concrete Screw

A method for producing a screw, comprising the steps of:

• providing a piece of a rod as a workpiece;
• forming a threaded coil on a lateral surface of the workpiece in a thread rolling process in which two profiled rolling tools act on the workpiece;
• and
• forming a recess in the lateral surface of the workpiece on an end area of the workpiece;
• wherein the recess, in a cross-section of the workpiece, is diametrically opposite from an area of the workpiece that is free of a recess;
• wherein initially the recess is formed in the lateral surface of the workpiece, and subsequently, the threaded coil is then formed on the lateral surface of the workpiece;
• and wherein at least one of the two profiled rolling tools acts on the end area of the workpiece with the recess during the thread rolling process of the threaded coil forming step.

A concrete screw, comprising:

• a shaft;
• and
• a screw thread arranged on a lateral surface of the shaft;
• wherein a cut-out recess is disposed in the lateral surface of the shaft on a tip of the shaft;
• and wherein the shaft has a greater eccentricity in a cross-section of the shaft in a tip region than in a center region, with the tip region located axially closer to the tip than the center region.