| VIVulcan Industries | Hudson | — | ◇ UNVERIFIED |
| WAWestford Anodizing Corporation | Westford | — | ◇ UNVERIFIED |
| WWWf Wood INC | Holliston | — | ◇ UNVERIFIED |
| WSWoburn Steel Drum | Woburn | — | ◇ UNVERIFIED |
| APAir Purchases - Anchor Stone Hvac Duct Fabrication INC. | Burlington | — | ◐ LIKELY ACTIVE |
| CCC & C Machine, INC | Tyngsboro | — | ◐ LIKELY ACTIVE |
| CCwst-wilmington,ma | Wilmington | 20–99 | ◐ LIKELY ACTIVE |
| DSDakota Systems, Inc | Dracut | 20–99 | ◐ LIKELY ACTIVE |
| EIEntegris i2M Bedford | Bedford | 100–499 | ◐ LIKELY ACTIVE |
| FUFairview USA, Inc. MA | Woburn | 1–19 | ◐ LIKELY ACTIVE |
| HMHolliston MFG (GTS, HTAS) | Holliston | 100–499 | ◐ LIKELY ACTIVE |
| INInteger N2 Surface Technologies | Woonsocket | 20–99 | ◐ LIKELY ACTIVE |
| JRJ & R Machine, INC. | Ashland | — | ▲ REPORTED CLOSED |
| LILytron Inc now known as Boyd Corporation (Woburn), Inc | Woburn | 100–499 | ◐ LIKELY ACTIVE |
| MMMarposa Manufacturing | Waltham | — | ◐ LIKELY ACTIVE |
| NMNest Mfg INC | Melrose | — | ◐ LIKELY ACTIVE |
| RBRandolph & Baldwin, INC. | Ayer | — | ◐ LIKELY ACTIVE |
| RMRennscot MFG | Woburn | 20–99 | ◐ LIKELY ACTIVE |
 Rs Hughes CO INC | Marlborough | — | ◐ LIKELY ACTIVE |
| SPSeavey Point Partners LLC | Wayland | — | ◐ LIKELY ACTIVE |
 Standex International Corporation | North Billerica | — | ▲ REPORTED CLOSED |
| UMUnlimited Manufacturing Service, INC | Lowell | — | ◐ LIKELY ACTIVE |
| HNHela Novel Metals LLC | Woburn | — | ◐ LIKELY ACTIVE |
| STSurface Transfer, INC. | Cambridge | — | ◐ LIKELY ACTIVE |
| IFInnovative Fabrication INC | Lowell | — | ◇ UNVERIFIED |
| RMR. Murphy Company, INC. | Ayer | — | ◇ UNVERIFIED |
| SCSajawi Corporation | Littleton | — | ◇ UNVERIFIED |
| 5O50 Old Tyng LLC | Tyngsboro | — | ◇ UNVERIFIED |
| AIAchilles Iron & Steel | Ayer | — | ◇ UNVERIFIED |
| AWAcp Waterjet INC | Littleton | — | ◇ UNVERIFIED |
| APAllium Pilot Factory | North Billerica | — | ◇ UNVERIFIED |
| AMAll Metal Fabricators, INC. | Acton | — | ◇ UNVERIFIED |
| ABAotco Billerica Building 4 | Billerica | — | ◇ UNVERIFIED |
| ASAplus Screw Machine Products LLC | Bedford | — | ◇ UNVERIFIED |
| AEAriston Engraving & Machine Co, INC. | Woburn | — | ◇ UNVERIFIED |
| AOAsahi Organic Chemicals Industry Co., LTD | Malden | — | ◇ UNVERIFIED |
| BIBaron Industries | Woburn | — | ◇ UNVERIFIED |
| BCBarry Controls | Watertown | — | ◇ UNVERIFIED |
| BFBoundary Fence & Railing Systems, INC. | Marlborough | — | ◇ UNVERIFIED |
| BMBve Marlborough | Marlborough | — | ◇ UNVERIFIED |
| CPCambridge Press | Somerville | — | ◇ UNVERIFIED |
| CCCelestica CORP | Lowell | — | ◇ UNVERIFIED |
| CICircor International INC. | Burlington | — | ◇ UNVERIFIED |
| CIClearmotion INC | Billerica | — | ◇ UNVERIFIED |
| CMConcept Manufacturing CO | Holliston | — | ◇ UNVERIFIED |
| DPD&B Property, LLC | Hudson | — | ◇ UNVERIFIED |
| DEDan-kar Engineering LLC | Woburn | — | ◇ UNVERIFIED |
| DCD. Clement, INC. | Dunstable | — | ◇ UNVERIFIED |
| DPDrew's Powder Coating LLC | Pepperell | — | ◇ UNVERIFIED |
| FMFabco Mfg., Inc. | Hudson | — | ◇ UNVERIFIED |
