Triangle Engineering, INC. | Hanover | — | ● ACTIVE |
Trilap Precision Finishing, LLC | Lowell | — | ● ACTIVE |
Tripyramid Structures, INC | Westford | — | ● ACTIVE |
| TPTri-state Precision, INC. | Northfield | — | ● ACTIVE |
Triumph Modular Incorporated | Westford | — | ● ACTIVE |
True Machine CO. | Swansea | — | ● ACTIVE |
United Innovations, INC. | Holyoke | — | ● ACTIVE |
| UMUniversal Machine & Design Corporation | Fitchburg | — | ● ACTIVE |
Vantage Defense LLC | Woburn | — | ● ACTIVE |
Villa Machine Associates, INC. | Dedham | — | ● ACTIVE |
Vortex LLC | Peabody | — | ● ACTIVE |
Vulcanforms INC | Devens | — | ● ACTIVE |
| WGWeyland Group LLC | Boylston | — | ● ACTIVE |
Whalley Precision, INC. | Southwick | — | ● ACTIVE |
Yankee Hill Machine Co., INC. | Easthampton | — | ● ACTIVE |
Zoomax USA INC | Methuen | — | ● ACTIVE |
| BFBete Fog Nozzle INC. | Greenfield | 100–499 | ◐ LIKELY ACTIVE |
| DRDexter Russell INC | Southbridge | 100–499 | ◐ LIKELY ACTIVE |
| IPIndustrial Precision, INC | Westfield | 20–99 | ▲ REPORTED CLOSED |
| KAKt Acquisition Llc, Dba Komtek Forge | Worcester | 20–99 | ◐ LIKELY ACTIVE |
| MCMedical Component Specialists INC | Bellingham | — | ◐ LIKELY ACTIVE |
| OSOlympic Systems CORP | Winchester | 20–99 | ◐ LIKELY ACTIVE |
| SWSmith & Wesson INC | Springfield | 500+ | ◐ LIKELY ACTIVE |
| VTV&s Taunton Galvanizing LLC | Taunton | 20–99 | ◐ LIKELY ACTIVE |
| MLMicrosemi Lawrence | Lawrence | — | ◐ LIKELY ACTIVE |
| AMActon Metal Processing Corporation | Waltham | — | ◐ LIKELY ACTIVE |
Alexander Machine & Tool Company, LLC. | Woburn | — | ◐ LIKELY ACTIVE |
| AMApmar Metal Finishing | Springfield | — | ◐ LIKELY ACTIVE |
| BEB & E Tool Company, INC. | Southwick | 100–499 | ▲ REPORTED CLOSED |
| CICurtis Industries LLC | West Boylston | 100–499 | ◐ LIKELY ACTIVE |
| DPDuc Pac Corporation the | Springfield | 20–99 | ◐ LIKELY ACTIVE |
| ESElectropolishing Systems | Plymouth | 20–99 | ◐ LIKELY ACTIVE |
| FIFlexaust INC | Amesbury | 1–19 | ◐ LIKELY ACTIVE |
| GMGtr Manufacturing CO | Brockton | 20–99 | ◐ LIKELY ACTIVE |
| HLHudson Lock | Hudson | 20–99 | ◐ LIKELY ACTIVE |
| IPInteger Precision Technologies LLC | Hudson | 100–499 | ◐ LIKELY ACTIVE |
| IEInterplex Etch Logic | Attleboro | — | ◐ LIKELY ACTIVE |
| IIIrwin Industrial Tool Company | East Longmeadow | 20–99 | ◐ LIKELY ACTIVE |
| LTLarson Tool & Stamping Company | Attleboro | 20–99 | ◐ LIKELY ACTIVE |
| NENew England Metalform INC | Plainville | 20–99 | ◐ LIKELY ACTIVE |
Nkt Photonics INC. | Boston | — | ◐ LIKELY ACTIVE |
| RIRaytheon Integrated Defense Systems | Andover | — | ◐ LIKELY ACTIVE |
| RMRuland Manufacturing CO. INC | Marlborough | 20–99 | ◐ LIKELY ACTIVE |
| SLSpectrum Lighting | Fall River | 100–499 | ◐ LIKELY ACTIVE |
Textron Systems Corporation | Wilmington | 100–499 | ▲ REPORTED CLOSED |
| VAVision American Saw LLC | East Longmeadow | — | ◐ LIKELY ACTIVE |
| WFWestside Finishing CO INC | Holyoke | 20–99 | ◐ LIKELY ACTIVE |
| ESElectroswitch Switches & Relays | Rockland | — | ◐ LIKELY ACTIVE |
| GMGillette Manufacturing | Boston | — | ◐ LIKELY ACTIVE |
| IMInternational Metal Products | Chicopee | — | ◐ LIKELY ACTIVE |