Kay Manufacturing is an automated, lean production manufacturer of precision components. We create tight-tolerance parts for ... industries including automotive, aerospace, power sports, agriculture, energy and the military. We are a minority-owned company with facilities operating 24 hours a day in Calumet City, Illinois and St. Joseph, Michigan. Always challenging the status quo, we design the best machining process for each job, combining skilled workers with advanced automation to create quality parts at lower costs. read more