Keystone Engineering Co.

PCX Aerosystems is a diversified global supplier specializing in precision machining and manufacturing of flight-critical mechanical assemblies, transmissions, gearboxes, shafts, housings, structural airframe assemblies, composite wrapped fuel tanks, landing gear, high-pressure propellant tanks, and specialty composites. The company serves the aerospace and maritime industries, providing advanced components for defense rotorcraft and naval defense platforms. With decades of industry experience, PCX Aerosystems is committed to delivering exceptional quality, reliability, and on-time delivery while continuously innovating to meet the rigorous demands of leading OEMs. The company operates multiple locations across the United States and maintains a strong focus on solving critical manufacturing needs with forward-thinking solutions.