| RIRaym-co, INC. | Farmington | 20–99 | ● ACTIVE |
Rbc Aircraft Products, INC. | Torrington | 100–499 | ● ACTIVE |
Reidville Hydraulics & Mfg INC | Torrington | 1–19 | ● ACTIVE |
| RPReliable Plating & Polishing Co., INC. | Bridgeport | 20–99 | ● ACTIVE |
Reno Machine Company, Inc., the | Newington | 20–99 | ● ACTIVE |
Reynolds Welding & Fabrication LLC | Windsor | 1–19 | ● ACTIVE |
Richards Machine Tool CO INC | Newington | 20–99 | ● ACTIVE |
| RMRk Manufacturing Corporation of Ct | Danbury | 100–499 | ● ACTIVE |
Rowley Spring & Stamping Corporation | Bristol | 100–499 | ● ACTIVE |
Rwt CORP | Madison | 20–99 | ● ACTIVE |
| SMSargent Manufacturing CO | New Haven | 500+ | ● ACTIVE |
Seconn Fabrication LLC | Waterford | 20–99 | ● ACTIVE |
| SSSeymour Sheridan INC | Monroe | 20–99 | ● ACTIVE |
Skillcraft Machine Tool Company | South Windsor | 20–99 | ● ACTIVE |
Sound Manufacturing, INC | Old Saybrook | 20–99 | ● ACTIVE |
| SCSousa Corp., the | Newington | 1–19 | ● ACTIVE |
| SPSpec Plating INC | Bridgeport | 1–19 | ● ACTIVE |
Spectrum Machine & Design, LLC | Windsor Locks | 20–99 | ● ACTIVE |
Stanley Wiesen, INC. | Hartford | 20–99 | ● ACTIVE |
Steeltech Building Products INC | South Windsor | 20–99 | ● ACTIVE |
| SSSterling Sintered Technologies INC | Winsted | 20–99 | ● ACTIVE |
| SCStevens CO INC | Thomaston | 20–99 | ● ACTIVE |
| SEStewart Efi Ct LLC | Thomaston | 20–99 | ● ACTIVE |
Straitek, LLC | Danbury | 1–19 | ● ACTIVE |
Straton Industries, INC. | Stratford | 20–99 | ● ACTIVE |
Summit Corporation of America | Thomaston | 20–99 | ● ACTIVE |
| SLSupreme Lake Mfg CO | Plantsville | 20–99 | ● ACTIVE |
| TMT.e.t. Mfg. CO INC | Middlefield | 1–19 | ● ACTIVE |
The Conard Corporation | Glastonbury | 20–99 | ● ACTIVE |
The Har-conn Chrome Company | West Hartford | 100–499 | ● ACTIVE |
| THThe H R Hillery Company | Groton | 1–19 | ● ACTIVE |
The Lee CO | Westbrook | 500+ | ● ACTIVE |
The Marion Manufacturing Company | Cheshire | 20–99 | ● ACTIVE |
The Sibley Company | Haddam | 1–19 | ● ACTIVE |
| TSThe Superior Plating Company | Southport | 20–99 | ● ACTIVE |
| TWThe Wilson Arms Company | Branford | 20–99 | ● ACTIVE |
Thompson Aerospace, LLC | Bristol | 1–19 | ● ACTIVE |
| TETiger Enterprises, INC. | Plantsville | 20–99 | ● ACTIVE |
| TMTolland Machine Company LLC | Vernon Rockville | 1–19 | ● ACTIVE |
Top Flight Machine Tool LLC | Plainville | — | ● ACTIVE |
Torqmaster, INC. | Stamford | 1–19 | ● ACTIVE |
Total Concept Tool, INC | Branford | 1–19 | ● ACTIVE |
T.p. Engineering INC | Danbury | — | ● ACTIVE |
Triem Industries Ii, LLC | Terryville | 20–99 | ● ACTIVE |
Truelove & Maclean INC | Watertown | — | ● ACTIVE |
| USUnified Sports, INC | Waterford | 100–499 | ● ACTIVE |
| USUnimetal Surface Finishing, LLC | Thomaston | 20–99 | ● ACTIVE |
| USUnited Steel Inc | East Hartford | 100–499 | ● ACTIVE |
| UWUnited Wire Company, Inc. | North Haven | 20–99 | ● ACTIVE |
| USU S Chrome Corporation | Stratford | 20–99 | ● ACTIVE |