This specification covers the basic requirements for 0.177 in. (4.50 mm) diameter metallic-coated carbon steel marcelled tension wires for use with chain-link fences. Three types of coatings are covered here, namely: Type I, aluminum-coated (aluminized); Type II, zinc-coated (galvanized); and Type III, zinc-5 % aluminum-mischmetal (Zn-5Al-MM) alloy-coated. When tested, the wires shall adhere specified requirements for breaking strength, size, weight of coating, and adherence of coating. The steel rod from which the wire is drawn shall be made by the open-hearth, electric-furnace, or basic-oxygen process, and the corresponding wire shall be cold-drawn, metallic-coated at finished sizes, then marcelled as appropriate.