Established in 2004, Johnson Manufacturing Systems is a Miamisburg manufacturer whose founders brought a collective 75 years of manufacturing-operations experience to the company. Known for taking on difficult customer work, JMS produces machined components and assemblies for sectors including aerospace and defense, green energy, and transportation.
Tomco Machining IncFounded in 2000, Tomco Machining is a Miamisburg manufacturer known for taking on complex, made-to-order work that many shops avoid. The company produces precision tubular assemblies for military and commercial aerospace customers, operating from a facility moved to in 2020 that offers room for substantial expansion.MIAMISBURG, OH
NMG AerospaceThree generations of the Piglia family have kept privately owned NMG Aerospace growing since Pete Piglia founded the company in 1967 as National Machine Company. Based in Stow, Ohio, NMG now supports aerospace and defense manufacturers from two U.S. facilities with more than 460 associates, while preserving its roots in careful problem-solving and long-term partnerships. The company is known for precision aerospace components and assemblies backed by in-house engineering and quality control.STOW, OH
Mac Machine Company, IncFounded in Baltimore in 1976, Mac Machine Company manufactures precision components and assemblies, originally for aerospace customers and now also for commercial aircraft, defense, and medical sectors. It operates a 35,000-square-foot Baltimore facility with 60 employees and describes more than 150 years of combined manufacturing experience. The company is known for precision machining and integrated production services, including work on complex aerospace housings.BALTIMORE, MD
Apollo American IncFounded in 1989, Apollo American manufactures precision turned and milled components for aerospace and defense programs from its 40,000-square-foot facility in Mentor, Ohio. The company’s work supports mission-critical applications, with capabilities spanning prototype work through high-volume production and tolerances as precise as ±0.0005 inches. Apollo American has maintained an average customer relationship of more than 25 years and holds AS9100 Rev D and ISO 9001 certifications, along with ITAR compliance and Joint Certification Program status.MENTOR, OH