DIN 601 / ISO 4016 Professional Hexagonal Construction Screw with Nut Grade 4.6/8.8 Galvanised Steel DIN601 Professional 6kt MU G4.6/8.8 VZ ST : Amazon.de: DIY & Tools
DIN 1587 / no ISO / Professional Hexagon Hat Nut Regulatory Class 8 Galvanised Steel DIN986 Professional 6kt Hat Nut RGW K8 VZ : Amazon.de: DIY & Tools