Last update: 15 March 2019
Evidement réalisé à l’intérieur d’un cylindre afin de réduire la portée de l'arbre contenu dans le cylindre.
Cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A counterbore hole is typically used when a fastener, such as a socket head cap screw, is required to sit flush with or below the level of a workpiece's surface.