An orientable screw-in element including a cap and a device adjusting angular orientation of the cap relative to a watch middle part. The device adjusting angular orientation of the cap includes a first part including a flat friction surface, a second part integral with the cap including a second flat friction surface and a return mechanism configured to rotate the cap integrally with the first part. The cap and first part are axially mobile in relation to each other between a first position in which the first flat friction surface and second flat friction surface are each pressed against each other by the return mechanism such that the cap rotates integrally with the first part, and a second position in which the first flat friction surface and second flat friction surface are not in contact, the cap therefore free to rotate about the rotational axis of the screw-in element.