... Screws:Material: Carbon Steel,Stainless,BrassSurface Treatment:Zinc Plated,plain(Stainless ,Brass)WFS(DIN 97 Flat Head with Slot,Black Oxide/Zinc ... ( Hot Galvanizing)Material:Carbon Steel,Stainless,BrassSurface Treatment:Zinc Plated,Yellow Zinc, Hot Galvanizing,Nickle Plated,Brass Plated,Black Phosphated Ruspert,Plain Wood Screws