Abstract: The invention relates to a brake module (1) for a drive system—in particular, for vehicle hatches—comprising at least one thrust washer (4) and at least one brake disk (3), wherein the at least one thrust washer (4) and the at least one brake disk (3) each have at least one friction surface, which surfaces rub against one another during braking operation, characterized in that the brake disk (3) is formed in one piece from a plastic material and has a number of depressions (18) in the at least one friction surface for receiving a lubricant.

Abstract: The invention relates to a spindle drive device comprising a spindle provided with an external thread, a thread engagement element which is in threaded engagement with the external thread of the spindle, a drive assembly having a drive unit which is configured to drive the spindle or the thread engagement element, wherein the spindle or the thread engagement element is connected to at least one connection unit for connecting the spindle drive device to a superordinate assembly that is not part of the spindle drive device. According to the invention, it is provided that the spindle is a trapezoidal thread spindle made of carbon steel and is heat-treated by means of at least one thermochemical method.