The Washers 1.Grade: A2, A4 2.Size: M3-M52 3.Finish:plain, zinc plated, hot dip galvan The round washers 1.Grade: A2, A42.Size: M3-M523.Finish:plain, zinc plated, hot dip galvanized, dacroment4.Material:Carbon steel, stainless steel5.Packing: Standard export packing or According to customer's requirement DIN440 round washers