M18 Heavy Duty Flat Washer (DIN 7349) - A2 Stainless Steel Heavy Duty Flat Washers are thicker than an average washer as well as tougher and resistant to corrosion. They are manufactured for heavy duty jobs and often used with bolts and heavy type spring pins. These Flat Washers are made from A2 Stainless Steel which provides corrosion and oxidation resistance. For larger quantities or items not listed, please email and one of our team will provide you with a quotation. M18 Heavy Duty Flat Washer (DIN 7349) - A2 Stainless Steel