| TTTurbine Technologies, INC | Farmington | 20–99 | ● ACTIVE |
| TMTwin Manufacturing CO | South Windsor | 100–499 | ● ACTIVE |
Winslow Automatics INC | New Britain | 20–99 | ● ACTIVE |
Aerobond Composites, LLC | Enfield | — | ● ACTIVE |
Cambridge Specialty CO. INC. | Berlin | 20–99 | ● ACTIVE |
Dell Manufacturing Co., LLC | Farmington | — | ● ACTIVE |
Enjet Aero Manchester LLC | Manchester | 100–499 | ● ACTIVE |
Gorman Performance Engineering LLC | Rocky Hill | — | ● ACTIVE |
| JLJ & L Machine CO. INC. | Manchester | 20–99 | ● ACTIVE |
| OSOverhaul Support Services, LLC | East Granby | 20–99 | ● ACTIVE |
Paradigm Manchester INC. | Manchester | — | ● ACTIVE |
| PTParagon Tool Company, INC. the | Manchester | 1–19 | ● ACTIVE |
Pcx Aerosystems-manchester, LLC | Manchester | 100–499 | ● ACTIVE |
Polar Corporation | Farmington | — | ● ACTIVE |
Rockville Technology LLC | Vernon Rockville | 20–99 | ● ACTIVE |
Saje Aerospace, INC. | Bloomfield | — | ● ACTIVE |
| STSatellite Tool & Machine Co., INC. | South Windsor | — | ● ACTIVE |
| SNSolar Nebula LLC | North Granby | — | ● ACTIVE |
Turbine Kinetics, INC | Glastonbury | — | ● ACTIVE |
Whitcraft South Windsor LLC | South Windsor | — | ● ACTIVE |
| AIAtp Industries, LLC | Plainville | — | ● ACTIVE |
Barnes Group INC | East Granby | — | ● ACTIVE |
Connecticut Trailers, INC. | Bolton | — | ● ACTIVE |
Ensign-bickford Aerospace & Defense Company | Simsbury | — | ● ACTIVE |
Hartford Truck Equipment, INC. | South Windsor | — | ● ACTIVE |
| TATriumph Actuation Systems - Connecticut, LLC | Windsor | — | ● ACTIVE |
| BABarnes Aerospace | Windsor | — | ◐ LIKELY ACTIVE |
| HAHanwha Aerospace USA | Glastonbury | 20–99 | ◐ LIKELY ACTIVE |
| JVJacobs Vehicle Systems | Bloomfield | — | ◐ LIKELY ACTIVE |
| MTMetals Testing CO | South Windsor | — | ◐ LIKELY ACTIVE |
| PWPratt & Whitney, Division of Rtx CORP | East Hartford | — | ◐ LIKELY ACTIVE |
| TATriumph Actuation Systems | Windsor | 100–499 | ◐ LIKELY ACTIVE |
| UEUnison Engine Components | Manchester | — | ◐ LIKELY ACTIVE |
| EAEdac Aero Rotating Components | Newington | — | ◐ LIKELY ACTIVE |
| PMParadigm Manchester INC | Manchester | — | ◐ LIKELY ACTIVE |
| TPTect Power | Newington | — | ◐ LIKELY ACTIVE |
| BABms Acucut LLC | Southington | — | ▲ REPORTED CLOSED |
Mar Aerospace LLC | Wethersfield | — | ◐ LIKELY ACTIVE |
| SISoldream, INC. | Vernon | 20–99 | ▲ REPORTED CLOSED |
| BMBirken Manufacturing Company, INC. | Bloomfield | 100–499 | ◇ UNVERIFIED |
| FCFaircloth Composites LLC | Ellington | — | ◐ LIKELY ACTIVE |
| GTGlobal Turbine Component Technologies, LLC | South Windsor | — | ◐ LIKELY ACTIVE |
| KAKaman Aerospace Corporation | Bloomfield | — | ◐ LIKELY ACTIVE |
| KAKaman Aerospace Helicopters Div | Bloomfield | — | ◐ LIKELY ACTIVE |
| LOLiberty Oil & Propane Equipment Co., Inc. | East Hartford | 20–99 | ◐ LIKELY ACTIVE |
| SCS. Camerota & Sons INC. | Enfield | 100–499 | ◐ LIKELY ACTIVE |
| SCStanadyne CORP | Windsor | — | ◐ LIKELY ACTIVE |
| TBToce Brothers Performance, LLC | South Windsor | — | ◐ LIKELY ACTIVE |
| WAWindsor Airmotive | East Granby | — | ◐ LIKELY ACTIVE |
| GAGkn Aerospace New England | Manchester | — | ◇ UNVERIFIED |