M20 Pack of 1 Washers DIN 125 ISO 7089 Low Galvanised Alloy Steel Washers U Mudguard Body Washers Plain Wide Round for Screws (21 mm x 37 mm) : Amazon.de: DIY & Tools
Steel Flat Washer, Zinc Plated Finish, DIN 125, Metric, M8 Screw Size, 8.4 mm ID, 16 mm OD, 1.6 mm Thick (Pack of 100): Amazon.com: Industrial & Scientific
M20 Metric Flat Washers (EN ISO 7089) - Zinc Plated Mild Steel (Grade 4.6)