Device for the orientation of a screw-in element of a timepiece

An orientable screw-in element comprising:

• a cap formed of a cover integral with a lateral skirt;
• and
• a device to adjust angular orientation of the cap relative to a watch middle part, wherein the device to adjust angular orientation of the cap includes a first part including a first flat friction surface, a second part integral with the cap including a second flat friction surface, and a return mechanism configured to cause the cap to rotate integrally with the first part,
• the cap and the first part being axially movable in relation to each other between a first position in which the first flat friction surface and the second flat friction surface are each pressed against each other by the return mechanism, and a second position, in which the first flat friction surface and the second flat friction surface are no longer in contact,
• wherein the first and second friction surfaces are arranged such that the cap rotates integrally with the first part in the first position and is free to rotate about the axis of rotation of the orientable screw-in element in the second position, and
• wherein the first part and the cover are farther apart from one another in the first position than in the second position.