UNX-8564
This is a small strap attachment screw. The screw thread and the rotating part of the strap are separate, so there is no need to worry about the screw loosening during use.
The small design does not interfere with the opening of the battery cover on the bottom of the camera.
It is a convenient item that enables the use of a strap by attaching it to a camera that does not have a strap attachment part.