A-1 Machining Company was incorporated in 1979 to serve turbine engine original equipment manufacturers. The company specializes in turning and milling components for aerospace turbine engines, aero-derivative turbines, and ground and marine turbines. Its work ranges from smaller components to parts as large as 150 inches in diameter, including retaining rings and fan cases. A-1 has particular experience machining hot-section turbine components and specialized aerospace materials.

Operating 24 hours a day, A-1 emphasizes clear communication, reliable commitments, fast turnaround, and quality. Its hands-on engineering team supports programming, tooling, first-piece work, and process improvement. For supporting processes such as heat treatment, nondestructive testing, and electrical discharge machining, the company works with aerospace suppliers in central Connecticut, allowing it to focus on its core machining capabilities.

A-1 reports a staff of 55, with many employees having more than 20 years at the company and over 800 combined years of aerospace machining experience. It maintains long-standing customer relationships and has recently added capacity as it continues to grow.