Hardware device for the vertically adjustable mounting of drawers extractably held in the carcase of furniture pieces by means of drawer slides. Each of the drawer slides has a guide rail for fastening in the carcase interior and a runner rail for attachment to the drawer on which races are provided for roller bodies or at least a roller journaled on one of the rails. In the vicinity of the carcase-front end of the drawer slide there is mounted a sector-shaped, thin adjuster for rotation about a vertical axis, the thickness of which measured in the vertical direction increases wedge-like in the direction of rotation from a radially disposed edge. The axis of rotation of the adjuster is so disposed with respect to the drawer slide that the portion that thickens wedge-like can be set between one of the rails of the drawer guide and a vertically opposite steady surface of the furniture piece.