A timepiece component, having a first part and a removable cap, which is able to adopt a fastening configuration in which the removable cap is fastened to the first part, and a free configuration in which the cap is separated from the first part. The first part comprises at least two latching members intended to cooperate with at least two corresponding assembly members of the cap in the fastening configuration. The cap or the first part is elastically deformable from a rest position to a deformed position which allows for positioning and removing for passing from the fastening configuration to the free configuration of the timepiece component and vice versa. The rest position allows stably maintain the fastening configuration of the timepiece component in which the at least two assembly members of the cap are in engagement with the at least two latching members of the first part.