Our goal is simple: Improve the Efficiency of your Supply Chain If your company needs a manufacturing and supply chain partner, Defiant Manufacturing has the manufacturing experience, the network and the know-how for Total Cost Reduction, Improved Quality and Peak Innovation. With over 20 years of experience, Defiant Manufacturing peels back the “extra” layers of margin and markup to provide our OEM clients quality components while improving the overall costs of projects. Defiant Manufacturing’s intricate model of manufacturing and strategic sourcing enables us to handle all the moving parts that coincide with an OEM’s overall project. From timely returned quotes to on time parts delivered on your dock, Defiant Manufacturing has the experts that will deliver the highest results.

Welcome to Defiant Manufacturing
Defiant Manufacturing is an industry leader in manufacturing precision-engineered components and defying the industry norms.
Operating from a 21,000-square-foot facility in West Chicago, IL, we deliver high-quality, value-driven manufacturing solutions that give our clients a strategic advantage. We specialize in complex CNC Mill/Turn, Production CNC Turning, Precision CNC Milling in all alloys, plastics, castings and even thermosets.
With over 75 years of combined experience and 30+ years of strategic partnerships, we defy expectations by providing smarter manufacturing solutions that boost profitability. At Defiant Manufacturing, we don’t just make components—we redefine what’s possible in manufacturing.
- Defiant improves the consistency and quality of your supply chain.
- Defiant streamlines your supplier database.
- Defiant “peels back the layers” of markup and participants in the supply chain.
- Defiant provides volume pricing solutions and buying power due to our strategic alliances
- Defiant has the expertise, the history, and the knowledge
- Defiant improves our clients’ competitive advantage
- Defiant delivers Total Cost Reduction
- Defiant provides the utmost Quality






