... 2.Material,stainless steel,carbon steel 3.SGS,ISO 4.Zinc or Nickel plated,Black Oxide,HDG Roofing bolt 1. Standard:DIN, ANSI ... :Plain, black finished, Zinc plated (Galv), Hot Dip Galvanized, Nickel, phosphate black, DACROMET coating, etc.7. Packing:Carbon, Pallet. or accoding to requirement8 ...