STC Industries (also known as Spiral Tool Corporation) is a company that provides contract CNC machining and assembly services for the aerospace, defense, and aviation industries. It offers CNC milling, turning, programming, and build-to-print manufacturing of parts and assemblies in materials such as aluminum, steel, stainless steel, high-temperature nickel alloys, brass, bronze, and plastics, with AS9100 and ISO9000 certifications. The company serves clients in the aerospace, defense, and aviation sectors.