| Brooks Industrial, LLC Milling, Grinding, Finishing | North Attleboro, MA | MillingGrindingFinishing | - |
| North Easton Machine Company, Inc Milling, Turning, Swiss · ISO 9001, ITAR, CMMC | North Easton, MA | MillingTurningSwiss | ISO 9001, ITAR, CMMC |
| Duval Precision Grinding Inc Grinding, Finishing | Chicopee, MA | GrindingFinishing | - |
| Northeast Manufacturing Milling, Turning, Assembly · ISO 9001 | Stoneham, MA | MillingTurningAssembly | ISO 9001 |
| A & A Industries, Inc Milling, Turning, Welding · ISO 9001, AS9100 | Peabody, MA | MillingTurningWelding | ISO 9001, AS9100 |
| Algonquin Industries Inc Milling, Turning, Laser, Bending, Welding, Grinding, Assembly | Bellingham, MA | MillingTurningLaserBendingWeldingGrindingAssembly | - |
| Donahue Industries, Incorporated Milling, Turning, Swiss, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing | Shrewsbury, MA | MillingTurningSwissPunchingBendingWeldingStampingEDMGrindingFinishing | - |
| Industrial Motions Engineering, Inc Milling, Turning, Welding, Grinding, Finishing, Assembly | Wilmington, MA | MillingTurningWeldingGrindingFinishingAssembly | - |
| Meridian Industrial Group, LLC Milling, Turning, Welding, Casting · ISO 9001, AS9100 | Holyoke, MA | MillingTurningWeldingCasting | ISO 9001, AS9100 |
| SX Industries, Inc Casting, Finishing | Stoughton, MA | CastingFinishing | - |
| A-W Airflo Industries, Inc Laser, Punching, Bending, Finishing | Newburyport, MA | LaserPunchingBendingFinishing | - |
| Boniface Tool & Die Inc Milling, Turning, Waterjet, Stamping, Grinding, Finishing | Dudley, MA | MillingTurningWaterjetStampingGrindingFinishing | - |
| Graycer Screw Products Co Inc Milling, Turning, Swiss | Bellingham, MA | MillingTurningSwiss | - |
| Jet Machined Products, LLC Milling, Turning, Stamping, Grinding · ISO 9001, ITAR | East Bridgewater, MA | MillingTurningStampingGrinding | ISO 9001, ITAR |
| Louis C Morin Co Inc Milling, Turning, Swiss, Welding, Grinding, Finishing, Assembly | North Billerica, MA | MillingTurningSwissWeldingGrindingFinishingAssembly | - |
| Metalogic Industries LLC Milling, Turning, Swiss, Laser, Welding, EDM, Grinding | Southbridge, MA | MillingTurningSwissLaserWeldingEDMGrinding | - |
| Mica-Tron Products Corp Milling, Grinding | Holbrook, MA | MillingGrinding | - |
| Morrison Berkshire Inc Welding | North Adams, MA | Welding | - |
| Ital-Tech Machined Products, LLC Milling, Turning, Welding, Grinding · ISO 9001, ITAR | Groveland, MA | MillingTurningWeldingGrinding | ISO 9001, ITAR |
| Operateup Inc Milling, Turning, Punching, Welding, Stamping · ISO 9001 | Orange, MA | MillingTurningPunchingWeldingStamping | ISO 9001 |
| 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 |
| Advanced Precision Engineering Milling, Turning, EDM · ISO 9001, AS9100 | Ipswich, MA | MillingTurningEDM | ISO 9001, AS9100 |
| Antron Engineering & Machine Co Inc Milling, Turning, Swiss, Welding, EDM, Assembly | Bellingham, MA | MillingTurningSwissWeldingEDMAssembly | - |
| Bay State Machine Co Milling, Turning, Grinding, Assembly | Easthampton, MA | MillingTurningGrindingAssembly | - |
| Borg Design Inc Milling, Turning · ISO 9001, AS9100, ITAR, CMMC | Hudson, MA | MillingTurning | ISO 9001, AS9100, ITAR, CMMC |
| Boulevard Machine & Gear, Inc Milling, Turning, Grinding · ISO 9001, AS9100, ITAR | Westfield, MA | MillingTurningGrinding | ISO 9001, AS9100, ITAR |
| Classic Engineering, LLC Milling, Turning, Waterjet, Welding, Finishing | Gloucester, MA | MillingTurningWaterjetWeldingFinishing | - |
| Coating Systems, Inc Finishing · NADCAP | Lowell, MA | Finishing | NADCAP |
| Cunningham Machine Co Milling, Turning · ISO 9001, AS9100, ITAR | Chelmsford, MA | MillingTurning | ISO 9001, AS9100, ITAR |
| Decker Machine Works Inc Milling, Turning, Swiss, EDM, Grinding · ISO 9001, AS9100, ITAR | Greenfield, MA | MillingTurningSwissEDMGrinding | ISO 9001, AS9100, ITAR |
| Dimark Precision Machining,, Inc Milling, Turning, Welding, Grinding | Pembroke, MA | MillingTurningWeldingGrinding | - |
| East Coast Welding and Fabrication, LLC Turning, Welding, Finishing, Assembly | Newburyport, MA | TurningWeldingFinishingAssembly | - |
| Empire Group USA, Inc Milling, Turning, Assembly · ISO 9001, ITAR | Attleboro, MA | MillingTurningAssembly | ISO 9001, ITAR |
| Fairview Machine Co Inc Milling, Turning, EDM, Assembly | Topsfield, MA | MillingTurningEDMAssembly | - |
| FH Peterson Machine Corp Milling, Turning, Welding, Grinding · ISO 9001, ITAR | Stoughton, MA | MillingTurningWeldingGrinding | ISO 9001, ITAR |
| Fraen Corp Stamping · ISO 9001, IATF 16949 | Reading, MA | Stamping | ISO 9001, IATF 16949 |
| Franklin Sheet Metal, LLC Milling, Laser, Waterjet, Punching, Bending, Welding, Grinding, Finishing · ITAR | Franklin, MA | MillingLaserWaterjetPunchingBendingWeldingGrindingFinishing | ITAR |
| Gradient Design & Engineering, Inc Milling, Turning · ISO 9001 | Leominster, MA | MillingTurning | ISO 9001 |
| JRS Precision Machine & Design LLC Milling, Turning | Lakeville, MA | MillingTurning | - |
| Lavelle Medical LLC Milling, Turning, Laser, EDM, Finishing · ISO 9001, ITAR, ISO 13485 | Westford, MA | MillingTurningLaserEDMFinishing | ISO 9001, ITAR, ISO 13485 |
| LHM Engineering LLC Milling, Swiss, Laser, Waterjet, Stamping, EDM, Grinding, Finishing, Assembly · ISO 13485 | Manchester, MA | MillingSwissLaserWaterjetStampingEDMGrindingFinishingAssembly | ISO 13485 |
| Lincoln Tool & Machine Corp Milling, Assembly | Hudson, MA | MillingAssembly | - |
| Macdiarmid Machine Milling, Turning, Grinding · ISO 9001, ITAR | Newburyport, MA | MillingTurningGrinding | ISO 9001, ITAR |
| Marzilli Machine Co Milling, Turning, Welding · ISO 9001, ITAR | Seekonk, MA | MillingTurningWelding | ISO 9001, ITAR |
| Mills Machine Works Inc Milling, Turning, Welding, Grinding | Lawrence, MA | MillingTurningWeldingGrinding | - |
| Nevron Plastics Inc Turning, Punching · ISO 9001 | Saugus, MA | TurningPunching | ISO 9001 |
| New England Foundry LLC Milling, Bending, Welding, Stamping, Casting, EDM, Grinding, Finishing · ISO 9001 | Taunton, MA | MillingBendingWeldingStampingCastingEDMGrindingFinishing | ISO 9001 |
| O. W. Landergren, Inc Milling, Laser, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing | Pittsfield, MA | MillingLaserPunchingBendingWeldingStampingEDMGrindingFinishing | - |
| Pearson Machine Milling, Welding, Grinding | Stoughton, MA | MillingWeldingGrinding | - |