Welcome to McCay Tool & Engineering’s Website.
About Us
McCay Tool & Engineering is a small business contract
manufacturer specializing in CNC machining,
CNC Turning and Fabrication for the aerospace
industry.

Based in St. Louis, the company was founded in 1950 by Stanley McCay in order to fill the U.S. Government's need for contract manufacturers during the post World War II aerospace and defense retooling era.

McCay Tool quickly became known as a quality manufacturer and won a prestigious contract to produce the warhead for the Raytheon designed Patriot Missile, thereby establishing itself as one of the premier U.S. defense contract manufacturers.

Over the years, McCay Tool & Engineering has continued its growth to become a world class manufacturing company specializing in precision machined parts for the major aerospace companies as well as the U.S. Government and its allies.

We are well positioned in the aerospace industry to offer a manufacturing network which brings value-added products using the latest technologies to our customers.

If you are looking for a source to manage all your manufacturing needs, please consider McCay Tool & Engineering.


McCay Tool & Engineering is located in a modern 50,000 square foot, temperature controlled facility in St. Louis, Missouri, USA.The plant is divided into manufacturing and assembly space in a cellular environment to allow the most efficient flow of products in a lean environment.