Abstract: A composite lead screw for use in a linear drive assembly is provided. The lead screw comprises a generally cylindrical carrier means. The carrier means has disposed therein at least one helical seating groove. This helical seating groove has a lead substantially equivalent to the lead of the lead screw. The lead screw also comprises at least one helical guide means having a lead substantially equivalent to the lead of the lead screw. The helical guide means is seated in the helical seating groove. A follower nut for use in a linear drive assembly in conjunction with the lead screw is also provided.