M22 Thin Fine Pitch Hexagon Nuts - 1.5mm Pitch (DIN 439) - A4 Stainless Steel: Accu.co.uk: Nuts
PROTECH Hexagonal Nuts M10 DIN 934 ISO 4032 Stainless Steel A2 V2A Pack of 10 : Amazon.de: DIY & Tools
M8 High Nylon Locking Nuts (DIN 982) - A4 Stainless Steel: Accu.co.uk: Nuts
tecuro S-Outlet for Wall-Mounted Fittings Chrome-Plated Length 150 mm - 3/4 Inch Connection Conical Sealing for Diameter 18 mm Socket : Amazon.de: DIY & Tools