Rapid RP160 Rivet Nut Adapter for M4, M5, M6 and M8 Rivet Nuts - Attaches to a Drill Driver or Screwdriver for Anchoring Rivet Nuts to Sheet Metal, 5001483 : Amazon.co.uk: DIY
Blind rivet nuts with small CSK straight shank open type knurled
Novus 045-0041 Aluminium Blind Rivet Nuts M4 x 6mm - Pack Of 10 | Rapid Online
Rapid 5000671 Ecrous à sertir M4 - vis Ø 4mm : Amazon.fr: Bricolage