| TITennessee Investment Casting Company, INC. (ticco) | Bristol | TN | Primary Metal Manufacturing331512 | 1-19 | ◐ LIKELY ACTIVE |
| TMThe Mapes Piano String Company | Elizabethton | TN | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| EFEureka Foundry Company | Chattanooga | TN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ACAssured Castings CORP | Rogersville | TN | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| CCContech Castings | Clarksville | TN | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| EFEssex Furukawa Magnet Wire USA LLC | Franklin | TN | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| GAGerdau Ameristeel US INC - Sms Mill Services LLC | Jackson | TN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| GFG. F. Puhl Company | Gallatin | TN | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| HCHorsehead CORP | Rockwood | TN | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| IWInsteel Wire Products TNS | Gallatin | TN | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| MWMid-south Wire Company | Nashville | TN | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| MSMissouri Smelting Technology INC | Jackson | TN | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| MSMorgan Steel LLC | Memphis | TN | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| MWMotor Wheel Commercial Vehicle Systems INC | Chattanooga | TN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
Nucor Steel Memphis INC | Memphis | TN | Primary Metal Manufacturing331221 | 500+ | ◐ LIKELY ACTIVE |
| RMRees Memphis Acquisition LLC | Memphis | TN | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| SIScepter Inc | Waverly | TN | Primary Metal Manufacturing331314 | 100-499 | ◐ LIKELY ACTIVE |
| SSSmelter Service CORP | Mount Pleasant | TN | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| SMSmoky Mountain Metals, INC. | Maryville | TN | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| SCSouthern Casting Company | Sevierville | TN | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Smyrna | TN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| TTThe Troxel Company | Moscow | TN | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| TMToyota Motor Manufacturing Tennessee | Jackson | TN | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| VMVestal Manufacturing Company | Sweetwater | TN | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| VMVestal Mfg CO | Sweetwater | TN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| VAVistawall Architectural Prods | Midway | TN | Primary Metal Manufacturing331316 | — | ◐ LIKELY ACTIVE |
| WCWismarq CORP | Jackson | TN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| AAAisin Automotive Casting Tennessee | Clinton | TN | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| AIAlcoa INC - North Plant | Alcoa | TN | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| JDJackson Die Casting LLC | Jackson | TN | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| KAKaiser Aluminum | Jackson | TN | Primary Metal Manufacturing331316 | — | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Murfreesboro | TN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| SWSteel Warehouse of Memphis | Memphis | TN | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| USUnited Stainless INC | Selmer | TN | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
Wolverine Tube | Ardmore | TN | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| AFAcheson Foundry & Machine Works, INC. | Chattanooga | TN | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| CTCreative Tubes | Jacksboro | TN | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| FSfischer Stainless Steel Tubing USA | Manchester | TN | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| GAGranges Americas Inc - Franklin Office | Franklin | TN | Primary Metal Manufacturing331313 | 20-99 | ◐ LIKELY ACTIVE |
| IMIntegrated Marketing Company, LLC | Chuckey | TN | Primary Metal Manufacturing331318 | 1-19 | ◐ LIKELY ACTIVE |
| NINeotiss, Inc. | Morristown | TN | Primary Metal Manufacturing331491 | 20-99 | ◐ LIKELY ACTIVE |
| SDSam Dong Inc. | Rogersville | TN | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| ARArrow Recycling | Sweetwater | TN | Primary Metal Manufacturing331314 | 1-19 | ◐ LIKELY ACTIVE |
| DMDelta Metals Company, INC. | Memphis | TN | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| KTKoide Tennessee, INC. | Rockford | TN | Primary Metal Manufacturing331111 | 20-99 | ◐ LIKELY ACTIVE |
Waupaca Foundry, INC. | Etowah | TN | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
| CFClarksville Foundry, INC. | Clarksville | TN | Primary Metal Manufacturing331511 | 20-99 | ◇ UNVERIFIED |
| EAEngineered Alloys LLC | Chattanooga | TN | Primary Metal Manufacturing331110 | 1-19 | ◇ UNVERIFIED |
| AOAerojet Ordnance Tennessee | Jonesborough | TN | Primary Metal Manufacturing331528 | — | ◐ LIKELY ACTIVE |
| ALArcelormittal Laplace LLC | Harriman | TN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |