Form B Flat Washers Assorted Box - A2 Stainless Steel (550pcs) Sizes: M6 - M12 This is an assorted box of M6 to M12 Form B Flat Washers in A2 Stainless Steel. There are a total of 550 pieces which will come in the handy plastic box. 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. Box Contents: 200 x M 6 Form B Washers 150 x M 8 Form B Washers 100 x M 10 Form B Washers 100 x M 12 Form B Washers Total Quantity: 550 pcs Assorted Form B Flat Washers - A2 Stainless Steel (550pcs)