M16 Form B Flat Washers (BS 4320B) - A2 Stainless Steel Metric Form B Flat Washers, maintain the standard outside diameter of a Form A Flat Washer but are thinner. Flat Washers are used to increase the surface area of the fastener and therefore distributing the force more evenly across the fastened surface. They can also be used as spacers due to them being flat on both sides. These Form B 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. M16 Form B Flat Washers (BS 4320B) - A2 Stainless Steel