Adjustable mechanism for a motor vehicle

An adjustable mechanism for a motor vehicle for adjusting any one of an adjustable part in a motor vehicle and a seat part comprising:

• a spindle nut defining an axis and interacting with a threaded spindle and comprising in an external surface an external toothing through which the spindle nut engages with a further gearing element;
• wherein the external toothing of the spindle nut is formed through radially inwardly pointing indentations in the external surface of the spindle nut such that a crest of each tooth is defined by a portion of the external surface of the spindle nut, and wherein tooth depth diminishes towards at least one axial end of the spindle nut;
• wherein the spindle nut has an opening with an internal surface, said internal surface comprising an internal toothing through which the spindle nut interacts with the threaded spindle;
• wherein the spindle nut has in the axial direction on at least one side of the external toothing an end section without external toothing, and wherein an outer diameter of the crest is less than or equal to an outer diameter of the end section;
• and
• wherein the internal toothing of the spindle nut interacting with the threaded spindle extends over a greater length in the axial direction than the external toothing of the spindle nut so that the internal toothing extends axially into the at least one end section without external toothing.