Are the grater attachments on this Moulinex appliance also held in place with a small plastic screw, as on the Betty Bossi appliance, which is similar in appearance? If so, could this screw be reordered from Moulinex or Galaxus in the event of a defect or loss? (Apparently, the small retaining screw cannot be reordered for the Betty Bossi appliance, so if it is missing, the entire appliance can no longer be used and would therefore have to be disposed of.