The thesis of this article is that new product manufacturability (NPM) is influenced by certain challenges inherent in new product development (NPD), and by efforts to integrate manufacturing and other functional concerns into the product design process. This research tests the direct and interacting effects of these influences via a survey of 91 completed NPD projects representing a variety of manufacturing industries. While most hypotheses were supported, the analysis also provides some surprising findings. Project complexity and increased levels of design outsourcing are associated with poorer NPM. Product newness and project acceleration are associated with better NPM. All the measured aspects of development team integration are associated with better NPM, including intense manufacturing involvement, a collaborative work environment, supplier influence on the product design, and strong management support in the project. Furthermore, certain integration variables exert moderating effects on relationships between technological uncertainty, product newness, design outsourcing, project acceleration and NPM. By exposing these relationships this research extends the theory of product development influences on manufacturability beyond a focus on engineering‐oriented approaches (e.g., design‐for‐manufacture). The results suggest that larger managerial issues must be addressed and that more contingency‐oriented research is needed to explore the benefits and limitations of development team integration processes.