... are available 3.Finish:zinc plate 4.Standard:DIN,ANSI,BS,JIS,GB Item NameJL-SCR-032 Round WasherMaterialIron, Brass, Carton steel ... , Rivets and etc.2. by head typesFlat, Oval, Binding, Pan, Round, Truss, Button, PF, Pan washer, Cheese, Countersunk, Fillister, hexagon, Hexagon ... treatment that are suitable for your productswww.jielimetal.com.cn Flat Round Washers JL-SCR-032