| Fraen Corp Stamping · ISO 9001, IATF 16949 | Reading, MA | Stamping | ISO 9001, IATF 16949 |
| Hawkeye Innovation LLC Milling, Grinding, Assembly · ISO 9001, AS9100, ITAR | Agawam, MA | MillingGrindingAssembly | ISO 9001, AS9100, ITAR |
| Mica-Tron Products Corp Milling, Grinding | Holbrook, MA | MillingGrinding | - |
| Trilap Precision Finishing, LLC Grinding · ITAR | Lowell, MA | Grinding | ITAR |
| Boulevard Machine & Gear, Inc Milling, Turning, Grinding · ISO 9001, AS9100, ITAR | Westfield, MA | MillingTurningGrinding | ISO 9001, AS9100, ITAR |
| Brodeur Machine Company, Inc Milling, Turning, Laser, Waterjet, Welding, EDM, Grinding | New Bedford, MA | MillingTurningLaserWaterjetWeldingEDMGrinding | - |
| Dalton Manufacturing Group Inc Milling, Turning, Grinding · ISO 9001, CMMC | Amesbury, MA | MillingTurningGrinding | ISO 9001, CMMC |
| Fitz Machine Waterjet, EDM, Stamping · ISO 9001, ITAR | Wakefield, MA | WaterjetEDMStamping | ISO 9001, ITAR |
| Jetfab LLC Milling, Turning, Laser, Waterjet, Punching, Bending, Welding | Lowell, MA | MillingTurningLaserWaterjetPunchingBendingWelding | - |
| Macdiarmid Machine Milling, Turning, Grinding · ISO 9001, ITAR | Newburyport, MA | MillingTurningGrinding | ISO 9001, ITAR |
| Rock Valley Tool, LLC Milling, Turning, Grinding · ISO 9001, AS9100, ITAR | Easthampton, MA | MillingTurningGrinding | ISO 9001, AS9100, ITAR |
| Thermo-Craft Engineering Corp Milling, Turning, Waterjet, Punching, Bending, Welding, Grinding, Assembly | Lynn, MA | MillingTurningWaterjetPunchingBendingWeldingGrindingAssembly | - |
| Vortex LLC Milling, Laser, Punching, Welding, EDM, Assembly | Peabody, MA | MillingLaserPunchingWeldingEDMAssembly | - |
| Antron Engineering & Machine Co Inc Milling, Turning, Swiss, Welding, EDM, Assembly | Bellingham, MA | MillingTurningSwissWeldingEDMAssembly | - |
| Gill Metal Fab Inc Welding | Brockton, MA | Welding | - |
| Lincoln Tool & Machine Corp Milling, Assembly | Hudson, MA | MillingAssembly | - |
| O. W. Landergren, Inc Milling, Laser, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing | Pittsfield, MA | MillingLaserPunchingBendingWeldingStampingEDMGrindingFinishing | - |
| Abwey Machine & Die Co Inc Milling, Grinding, Assembly | Pembroke, MA | MillingGrindingAssembly | - |
| Boniface Tool & Die Inc Milling, Turning, Waterjet, Stamping, Grinding, Finishing | Dudley, MA | MillingTurningWaterjetStampingGrindingFinishing | - |
| D & D Manufacturing LLC Milling, Turning, Grinding | Ipswich, MA | MillingTurningGrinding | - |
| Prematech, LLC Grinding | Worcester, MA | Grinding | - |
| Ramco Machine LLC Milling, Turning, EDM | Rowley, MA | MillingTurningEDM | - |
| Van - Wal Machine, Inc Milling, Turning, Grinding | Bellingham, MA | MillingTurningGrinding | - |