Washers Size:M3-M20 Material:Stainles steel Standard:DIN,ANSI/ASME,ISO,JIS,GB Finish:Plain,Chrome plated,zinc plated , black Item:Hexagon Socket Head Cap Screws1.High quality, competitive price2.Different standard of your choice3.All products have passed international standard4.Welcome to visit our company website:http://www.sz-hongyi.com.cn5.Customized fastenters can be made as customer's sample ...