A polyaxial bone anchoring device includesan anchoring element having a shaft and a head；a receiving part having a channel for receiving a rod therein, a coaxial bore and a seat portion for receiving the head；a pressure element having a head contacting surface portion；wherein the head is pivotable with respect to the receiving part and can be fixed at an angle by exerting pressure via the pressure element onto the head, and wherein the head has an oversize with respect to the head contacting surface portion such that an interference fit is achieved that clamps the head by the friction between the head and the head contacting surface portion. The curved outer surface portion has a largest diameter and the head contacting surface contacts the head at least in a region including the largest diameter.
