they are on the discount parts list (I wondered why a nut was so expensive), so they "should" be available from Renault at a huigher price and shorter deliver.
If you have some missing you can use wing nuts as well in certain locations for quick release!
Trafic, Twingo GT, Vel Satis Turbo x 2, Clio V6 Proto Ph2, Vel Satis 3.5, Avantime, Alpine A610, GTA Atmo x 3, GTA Turbo x 3, R5 Gordini Turbo Mid Engine, Alpine A310 4cyl, Alpine A110, Yellow Smart