| PAPermalok - a Northwest Pipe CO | St Louis | MO | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| CCConnector Castings | St. Louis | MO | Primary Metal Manufacturing331522 | 20-99 | ◐ LIKELY ACTIVE |
| EAEngraphix Architectural Signage | St Louis | MO | Primary Metal Manufacturing331492 | 20-99 | ◐ LIKELY ACTIVE |
| BDBohn & Dawson, Inc. | St. Louis | MO | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| SLSt Louis Cold Drawn LLC | St Louis | MO | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| RCRexite Casting | St Louis | MO | Primary Metal Manufacturing331316 | 1-19 | ◇ UNVERIFIED |
| GIGrossman Iron & Steel CO | St Louis | MO | Primary Metal Manufacturing331419 | — | ◐ LIKELY ACTIVE |
| BABodine Aluminum Inc-walton Road | St. Louis | MO | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| FFFederal-mogul Friction Products-federal-mogul Friction Products | St. Louis | MO | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SMSouthern Metal Processing | St. Louis | MO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| BDBohn & Dawson, Inc. | Saint Louis | MO | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| GAGateway Aluminum | St. Louis | MO | Primary Metal Manufacturing331315 | 20-99 | ◐ LIKELY ACTIVE |
| GAGateway Aluminum | Saint Louis | MO | Primary Metal Manufacturing331315 | 20-99 | ◐ LIKELY ACTIVE |
| JPJK Pulley Co Inc | St. Louis | MO | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| PAPermalok A Northwest Pipe Company | St. Louis, | MO | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| GIGould INC Foundry Products Div | St Louis | MO | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| KKoken-koken | St. Louis | MO | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |