Bull Metal Products, INC. | Middletown | 20–99 | ● ACTIVE |
Sound Manufacturing, INC | Old Saybrook | 20–99 | ● ACTIVE |
Ben Hughes Communication Products CO. | Chester | — | ● ACTIVE |
Bourdon Forge CO INC | Middletown | — | ● ACTIVE |
| TMT.e.t. Mfg. CO INC | Middlefield | — | ● ACTIVE |
The Lee CO | Westbrook | — | ● ACTIVE |
The Sibley Company | Haddam | — | ● ACTIVE |
Aeronautix Precision, LLC | Old Saybrook | — | ● ACTIVE |
| AIAztec Industries LLC | Middletown | — | ● ACTIVE |
Chapco INC | Chester | — | ● ACTIVE |
| CMCarey Manufacturing Co, INC | Cromwell | 20–99 | ◐ LIKELY ACTIVE |
| HMHobson & Motzer, LLC - Durham, CT | Durham | 100–499 | ◐ LIKELY ACTIVE |
| RMRayco Metal Finishing, INC. | Middletown | — | ◐ LIKELY ACTIVE |
| CCCapewell Components/ Ripley CO | Cromwell | — | ◇ UNVERIFIED |
| MMMohawk Manufacturing CO | Middletown | — | ◇ UNVERIFIED |
| PLParsons Lane Associates LLC | Durham | — | ◇ UNVERIFIED |
| RTRipley Tools | Cromwell | — | ◇ UNVERIFIED |
| AMAmerican Metal Crafters LLC | Middletown | 20–99 | ◐ LIKELY ACTIVE |
| AVAtlantic Ventilating & Equipment Co., Inc. | Cromwell | 1–19 | ◐ LIKELY ACTIVE |
Chapco, INC. | Deep River | — | ◐ LIKELY ACTIVE |
| IGIMH Group | Westbrook | 100–499 | ◐ LIKELY ACTIVE |
| PPettipaug | Westbrook | 100–499 | ◐ LIKELY ACTIVE |
| PGPlug Group | Westbrook | 20–99 | ◐ LIKELY ACTIVE |
| PMPp Middletown Holdings, LLC | Middletown | — | ◐ LIKELY ACTIVE |
| RGRestrictor Group | Westbrook | 100–499 | ◐ LIKELY ACTIVE |
| SGSolenoid Group | Westbrook | 100–499 | ◐ LIKELY ACTIVE |
| UMUnited Manufacturing Solutions LLC | Higganum | — | ◐ LIKELY ACTIVE |
| ASAdvanced Sheetmetal Associates, LLC | Middlefield | — | ◇ UNVERIFIED |
| ATAbstract Tool, INC. | Deep River | — | ◇ UNVERIFIED |
| CPCompass Powder Coating, LLC | Middletown | — | ◇ UNVERIFIED |
| DBDeco Blades LLC | Middletown | — | ◇ UNVERIFIED |
| DMDurham Manufacturing CO | Durham | — | ◇ UNVERIFIED |
| KCKaman Corporation | Middletown | — | ◇ UNVERIFIED |
| LCLee CO the | Westbrook | — | ◇ UNVERIFIED |
| MLMetalpro LLC | Old Saybrook | — | ◇ UNVERIFIED |
| NSNational Sintered Alloys Incorporated | Clinton | — | ◇ UNVERIFIED |
| NSNational Sintered Alloys Incorporated | Clinton | — | ◇ UNVERIFIED |
| PMParason Machine, INC. | Deep River | — | ◇ UNVERIFIED |
| PTPara Tech Coating By Curtiss-wright CORP | Middletown | — | ◇ UNVERIFIED |
| PTPara Tech Coating, INC | Middletown | — | ◇ UNVERIFIED |
| RIRev Industries LLC | Cromwell | — | ◇ UNVERIFIED |
| SIStanley-bostitch INC Clinton Plant | Clinton | — | ◇ UNVERIFIED |
| SWState Welding & Fabricating, Inc. | Clinton | — | ◇ UNVERIFIED |