The invention relates to a thrust washer (9) for planet gears (6) of a planetary gearbox and is characterized in that it is made from a tempered cold rolled strip having a flatness less than or equal to 0.03 mm, and a hardness ranging from 370 to 580 HV. The thrust washer (9) can be produced in a particularly cost-effective manner by making it from an appropriate input stock having the subsequent desired properties.
