Mk Services CORP. | Middleton | 20–99 | ● ACTIVE |
| MBMorrison Berkshire INC | North Adams | 1–19 | ● ACTIVE |
New England Custom Coaters, INC. | Agawam | 20–99 | ● ACTIVE |
| NENew England Etching Co, INC. | Holyoke | 20–99 | ● ACTIVE |
Norpin Manufacturing CO INC | Wilbraham | 1–19 | ● ACTIVE |
Nortek, INC. | West Springfield | 1–19 | ● ACTIVE |
Northampton Machine Co., INC. | Easthampton | 20–99 | ● ACTIVE |
| NMNortheast Manufacturing Co., INC. | Stoneham | 1–19 | ● ACTIVE |
North Easton Machine Company, INC. | North Easton | 20–99 | ● ACTIVE |
Operateup INC | Orange | — | ● ACTIVE |
Paragon Mfg., INC. | Westfield | 20–99 | ● ACTIVE |
Peerless Precision, INC. | Westfield | 20–99 | ● ACTIVE |
Photofabrication Engineering, INC | Milford | 20–99 | ● ACTIVE |
| PUPlansee USA LLC | Franklin | 100–499 | ● ACTIVE |
Plastic Distributors & Fabricators, LLC | Haverhill | 20–99 | ● ACTIVE |
Plating for Electronics, LLC | Waltham | 20–99 | ● ACTIVE |
Pocasset Machine, LLC | Pocasset | 20–99 | ● ACTIVE |
Poly-plating, INC. | Chicopee | 1–19 | ● ACTIVE |
Precision Engineering LLC | Uxbridge | — | ● ACTIVE |
Precision Machinists Company INC. | Chelmsford | 20–99 | ● ACTIVE |
Purecoat North, LLC | Belmont | — | ● ACTIVE |
| PEPv Engineering & Manufacturing INC | Salisbury | 1–19 | ● ACTIVE |
Ramco Machine LLC | Rowley | 20–99 | ● ACTIVE |
Ramsay Welding & Fabrication, INC. | Woburn | 1–19 | ● ACTIVE |
Ranor INC. | Westminster | 20–99 | ● ACTIVE |
| RMRebars & Mesh, INC | Haverhill | 20–99 | ● ACTIVE |
Riverdale Mills CORP | Northbridge | 20–99 | ● ACTIVE |
River St. Metal Finishing, INC. | Braintree | 1–19 | ● ACTIVE |
| RMRobbins Manufacturing Company, INC. | Fall River | 20–99 | ● ACTIVE |
Rochester Electronics LLC | Newburyport | 500+ | ● ACTIVE |
Rock Valley Tool, LLC | Easthampton | 20–99 | ● ACTIVE |
Ryan Iron Works, INC. | Raynham | 20–99 | ● ACTIVE |
Saliga Machine Co., INC. | Hudson | 20–99 | ● ACTIVE |
| SASavage Arms | Westfield | 100–499 | ● ACTIVE |
Sharon Vacuum CO INC | Brockton | 1–19 | ● ACTIVE |
| SES&h Engineering, INC | Chelmsford | 1–19 | ● ACTIVE |
Southbridge Sheet Metal Works, INC | Sturbridge | 20–99 | ● ACTIVE |
Specialized Plating, INC. | Haverhill | 1–19 | ● ACTIVE |
| SMSp Machine, INC | Hudson | 1–19 | ● ACTIVE |
Springfield Spring Corporation | East Longmeadow | 20–99 | ● ACTIVE |
Spring Manufacturing CORP | Tewksbury | 1–19 | ● ACTIVE |
Stafford Manufacturing CORP. | Wilmington | 20–99 | ● ACTIVE |
Sterling Precision, LLC | Clinton | — | ● ACTIVE |
St Pierre Manufacturing CORP | Worcester | 1–19 | ● ACTIVE |
Suncor Stainless, INC | Plymouth | 100–499 | ● ACTIVE |
| SPSwiss Precision Products, INC. | North Oxford | 1–19 | ● ACTIVE |
| SISwissturn/usa, INC. | Oxford | 20–99 | ● ACTIVE |
Sx Industries, INC | Stoughton | 20–99 | ● ACTIVE |
Target Machine, INC | Ipswich | 1–19 | ● ACTIVE |
Taunton Stove Company, INC. | North Dighton | 20–99 | ● ACTIVE |