Amazon.com: Steel Hex Nut, Plain Finish, Class 10, DIN 934, Metric, M20-2.5 Thread Size, 30 mm Width Across Flats, 16 mm Thick (Pack of 25) : Industrial & Scientific
Hex Nuts M3 DIN 934 Stainless Steel V2A Nuts A2-70 Pack of 10 : Amazon.de: DIY & Tools