| Sound Manufacturing, Inc Milling, Laser, Punching, Bending, Welding, Assembly · ISO 9001 | Old Saybrook, CT | MillingLaserPunchingBendingWeldingAssembly | ISO 9001 |
| Ortiz Tool, LLC Milling, Turning, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP | Windsor, CT | MillingTurningFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP |
| Vangor Engineering Corporation, the Milling, Swiss, Casting · AS9100 | Oxford, CT | MillingSwissCasting | AS9100 |
| Armoloy of Connecticut, Inc Finishing · ISO 9001, AS9100, ITAR, NADCAP | Bristol, CT | Finishing | ISO 9001, AS9100, ITAR, NADCAP |
| Astro Aircom LLC Milling, Turning, Welding, Grinding, Finishing · ISO 9001, AS9100, ITAR | Bloomfield, CT | MillingTurningWeldingGrindingFinishing | ISO 9001, AS9100, ITAR |
| Chapco, Inc Laser, Punching, Bending, Welding, Grinding, Finishing, Assembly · ISO 9001, ITAR, CMMC | Deep River, CT | LaserPunchingBendingWeldingGrindingFinishingAssembly | ISO 9001, ITAR, CMMC |
| Fairchild Precision Parts Milling, Turning, Swiss, Stamping, Grinding, Finishing · ISO 9001, AS9100, ITAR | Winsted, CT | MillingTurningSwissStampingGrindingFinishing | ISO 9001, AS9100, ITAR |
| Moore Tool Company, Inc Stamping, Grinding, Finishing, Assembly · ISO 9001, AS9100 | Bridgeport, CT | StampingGrindingFinishingAssembly | ISO 9001, AS9100 |
| Accu-Rite Tool & Manufacturing Co Inc Milling, Turning · ISO 9001 | Tolland, CT | MillingTurning | ISO 9001 |
| Advanced Machining Technologies L.L.C Milling, Turning · ISO 9001, AS9100 | Plainville, CT | MillingTurning | ISO 9001, AS9100 |
| Alloy Welding and Manufacturing Co., Inc. Welding, Waterjet · ISO 9001 | Bristol, CT | WeldingWaterjet | ISO 9001 |
| B & A Co Inc Milling, Turning · ISO 9001, AS9100 | Milford, CT | MillingTurning | ISO 9001, AS9100 |
| B & F Machine Co., Inc Milling, Welding, EDM, Grinding · ISO 9001, AS9100 | New Britain, CT | MillingWeldingEDMGrinding | ISO 9001, AS9100 |
| Burke Precision Machine Company, Incorporated Milling, Turning, Grinding · ISO 9001 | East Granby, CT | MillingTurningGrinding | ISO 9001 |
| Creed Monarch Milling, Turning, Grinding · ISO 9001 | New Britain, CT | MillingTurningGrinding | ISO 9001 |
| Edco Engineering Inc Milling, Bending, Welding · ISO 9001, AS9100, NADCAP | Newington, CT | MillingBendingWelding | ISO 9001, AS9100, NADCAP |
| Frank Roth Co Inc Welding · ISO 9001, AS9100 | Stratford, CT | Welding | ISO 9001, AS9100 |
| General Machine Co Inc Milling, Grinding · ISO 9001, AS9100 | Bristol, CT | MillingGrinding | ISO 9001, AS9100 |
| Grace Machine Company, LLC Milling, Turning, EDM, Grinding · ISO 9001 | Berlin, CT | MillingTurningEDMGrinding | ISO 9001 |
| Horst Engineering Milling, Turning · ISO 9001, AS9100 | East Hartford, CT | MillingTurning | ISO 9001, AS9100 |
| JV Precision Machine Co Milling, EDM · ISO 9001, AS9100, ITAR | Seymour, CT | MillingEDM | ISO 9001, AS9100, ITAR |
| Mega Precision LLC Milling, Turning · ISO 9001, AS9100 | Newington, CT | MillingTurning | ISO 9001, AS9100 |
| Micro Precision, LLC Milling · ISO 9001 | South Windham, CT | Milling | ISO 9001 |
| Paramount Machine Turning, EDM · ISO 9001, AS9100, NADCAP | Manchester, CT | TurningEDM | ISO 9001, AS9100, NADCAP |
| Perry Technology Corporation Milling, Turning, EDM · ISO 9001, AS9100, ITAR, NADCAP | New Hartford, CT | MillingTurningEDM | ISO 9001, AS9100, ITAR, NADCAP |
| Petit Tool Company Milling, Turning, Punching, Welding, Stamping, Grinding · ISO 9001, ITAR | Thomaston, CT | MillingTurningPunchingWeldingStampingGrinding | ISO 9001, ITAR |
| Phoenix Manufacturing, Inc Milling, Turning, Waterjet, EDM · ISO 9001, AS9100, NADCAP | Enfield, CT | MillingTurningWaterjetEDM | ISO 9001, AS9100, NADCAP |
| Richards Machine Tool Co Inc Milling, Turning, Assembly · ISO 9001, AS9100 | Newington, CT | MillingTurningAssembly | ISO 9001, AS9100 |
| Shelby Supply Co LLC Welding · ISO 9001 | Tolland, CT | Welding | ISO 9001 |
| A B & F Sheet Metal Products Inc Milling, Turning, Waterjet, Bending, Welding, Finishing · AS9100, ITAR | Cheshire, CT | MillingTurningWaterjetBendingWeldingFinishing | AS9100, ITAR |
| Compo Engineering LLC Welding, Finishing | Westport, CT | WeldingFinishing | - |
| Forge 41 Inc Milling, Bending, Finishing | Central Village, CT | MillingBendingFinishing | - |
| Marsam Metal Finishing Co Finishing, Assembly | New Britain, CT | FinishingAssembly | - |
| National Chromium Finishing | Putnam, CT | Finishing | - |
| Saar Corp Milling, Turning, Swiss, Finishing, Assembly · AS9100 | Farmington, CT | MillingTurningSwissFinishingAssembly | AS9100 |
| Seconn Fabrication LLC Laser, Punching, Bending, Welding, Finishing | Waterford, CT | LaserPunchingBendingWeldingFinishing | - |
| Straton Industries Inc Milling, Turning, Stamping, EDM, Grinding, Finishing, Assembly · AS9100, ITAR, CMMC | Stratford, CT | MillingTurningStampingEDMGrindingFinishingAssembly | AS9100, ITAR, CMMC |
| T.e.t. Mfg. Co Inc Milling, Grinding, Finishing | Middlefield, CT | MillingGrindingFinishing | - |
| W & W Machine Co Inc Milling, Turning, Swiss, Welding, EDM, Finishing | Milford, CT | MillingTurningSwissWeldingEDMFinishing | - |
| Allied Precision Components LLC Milling, Turning, Swiss | Wallingford, CT | MillingTurningSwiss | - |
| Aurora Advanced Manufacturing LLC Milling, Turning | Rocky Hill, CT | MillingTurning | - |
| Century Tool Co Inc Milling, Turning, Welding, EDM, Grinding | Thompson, CT | MillingTurningWeldingEDMGrinding | - |
| Forster Precision Tool, LLC Milling, Turning, Welding, EDM, Grinding | Seymour, CT | MillingTurningWeldingEDMGrinding | - |
| G & R Manufacturing Welding, Stamping, Finishing, Assembly · ISO 9001, ITAR | Naugatuck, CT | WeldingStampingFinishingAssembly | ISO 9001, ITAR |
| Integra Cast Milling, Turning, Welding, Casting, Finishing, Assembly · ISO 9001, NADCAP | New Britain, CT | MillingTurningWeldingCastingFinishingAssembly | ISO 9001, NADCAP |
| Marion Manufacturing Co Inc Milling, Turning, Laser, Stamping, EDM | Cheshire, CT | MillingTurningLaserStampingEDM | - |
| Newhart Products II Inc Waterjet, Stamping | Milford, CT | WaterjetStamping | - |
| Progress, Inc Milling, Turning, Welding, Assembly | Newington, CT | MillingTurningWeldingAssembly | - |
| QSR Steel Corporation Welding | Hartford, CT | Welding | - |
| Sirois Tool Company, Inc Milling, Turning, EDM, Grinding, Assembly | Berlin, CT | MillingTurningEDMGrindingAssembly | - |