... . Size: PB 1.7*63. Finish: zinc-platingMaterialBrass, Carton steel, Stainless steel, Alloy steelSurface TreatmentChrome plating, Silver plating, Zinc plating, Nickel plating, Tin ... , Rivets and etc.2. by head typesFlat, Oval, Binding, Pan, Round, Truss, Button, PF, Pan washer, Cheese, Countersunk, Fillister, hexagon, ... suitable for your products.www.jielimetal.com.cn Custom Brass Round Nut JL-SCR-026