In a method for connecting a spindle to a spindle holding element in order to produce a longitudinal adjustment device for a vehicle seat, a spindle that extends along a longitudinal axis is connected to an attachment portion of a spindle holding element in a materially bonded manner using a resistance welding method. In this way, a method for connecting a spindle to a spindle holding element in order to produce a longitudinal adjustment device for a vehicle seat is provided, this allowing a firm connection of a spindle to a guide rail via one or more spindle holding elements, with a production process that is easy to manage and to monitor.