| Lincoln Tool & Machine Corp Milling, Assembly | Hudson, MA | MillingAssembly | - |
| Wrobel Engineering Co. Inc Milling, Turning, Punching, Welding, Stamping, Grinding, Assembly | Avon, MA | MillingTurningPunchingWeldingStampingGrindingAssembly | - |
| Abwey Machine & Die Co Inc Milling, Grinding, Assembly | Pembroke, MA | MillingGrindingAssembly | - |
| Accudynamics LLC Assembly · ISO 9001, AS9100, ITAR, ISO 13485 | Lakeville, MA | Assembly | ISO 9001, AS9100, ITAR, ISO 13485 |
| Bay State Machine Co Milling, Turning, Grinding, Assembly | Easthampton, MA | MillingTurningGrindingAssembly | - |
| D. J. Fabricators, Inc Milling, Laser, Waterjet, Punching, Bending, Welding, EDM, Grinding, Assembly · ISO 9001 | Ipswich, MA | MillingLaserWaterjetPunchingBendingWeldingEDMGrindingAssembly | ISO 9001 |
| Fairview Machine Co Inc Milling, Turning, EDM, Assembly | Topsfield, MA | MillingTurningEDMAssembly | - |
| Fixyte Systems Inc Milling, Assembly · ISO 9001, ITAR | Billerica, MA | MillingAssembly | ISO 9001, ITAR |
| Hillside Engineering, Inc Milling, Turning, Grinding, Assembly | Danvers, MA | MillingTurningGrindingAssembly | - |
| Millrite Machine Inc Turning, Assembly · ISO 9001 | Westfield, MA | TurningAssembly | ISO 9001 |
| Northeast Manufacturing Milling, Turning, Assembly · ISO 9001 | Stoneham, MA | MillingTurningAssembly | ISO 9001 |
| Richards Design, Inc Milling, Turning, Welding, EDM, Assembly · ISO 9001 | East Falmouth, MA | MillingTurningWeldingEDMAssembly | ISO 9001 |
| Thermo-Craft Engineering Corp Milling, Turning, Waterjet, Punching, Bending, Welding, Grinding, Assembly | Lynn, MA | MillingTurningWaterjetPunchingBendingWeldingGrindingAssembly | - |