Used in commercial and military applications, these high-performance wires meet requirements for small dimensions, high-temperature resistance, low weight, and low flame propagation. This specification covers fluoropolymer-insulated single conductor electrical wires made with tin-coated, silver-coated, or nickel-coated conductors of copper or copper alloy. Built in strict accordance with military specifications, Mil-Spec wire (including SAE wire) is designed specifically for military and aerospace applications. Operating in harsh environments, these wires provide protection in extreme conditions.