M20 Flat Penny Washer Stainless Steel A2 (Pack of 1) Large OD Plain Wide Round Metal Washers for Screws – Certified Standart ISO 7093 DIN 9021 M20 (22mm x 60mm) : Amazon.co.uk:
Lantelme Stainless steel washers 3 pieces 6 cm large with hole for M12 washers flat for industry and do-it-yourselfers 3682 : Amazon.co.uk: DIY & Tools
M20 Flat Penny Washer (Pack of 5) Large OD Plain Wide Round Metal Alloy Steel Washers
Repair Penny Washer BZP - M6 x 60mm | Shop4Fasteners