The Nash Quad is a four-wheel drive, 11⁄2-ton rated truck that was developed and built by the Thomas B. Jeffery Company from 1913 in Kenosha, Wisconsin, and after 1916 by Nash Motors, which acquired the Jeffery Company. Production of the Quad continued unchanged through 1928.

U.S. Marines riding in a Jeffery Quad,
Fort Santo Domingo, c. 1916