| VSVast Sumitec INC | Benton Harbor | MI | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| WMWindsor Machine & Stamping US LTD | Taylor | MI | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| BSBekaert Steel | Muskegon | MI | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| CFCentury Foundry INC | Muskegon Hts | MI | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| ICIntermet CORP | Stevensville | MI | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| KWKreher Wire Processing | Romulus | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| LMLight Metals Corporation | Wyoming | MI | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| PHParker Hannifin-otsego | Otsego | MI | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| SSSandvik Steel CO | Benton Harbor | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| STSteel Technologies INC | Canton | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| WHWood - H&h Tube Gwcu | Vanderbilt | MI | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| AIAutocast INC | Grandville | MI | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| BHBohn Hydro Aluminum | Holland | MI | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
Bunting Bearings CORP | Portage | MI | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| CDCascade Die Casting Mid-state | Grand Rapids | MI | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| CUContech U.s. LLC | Dowagiac | MI | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| CCCosma Casting Mich-battle Ck | Battle Creek | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| DSDw-national Standard-niles, LLC | Niles | MI | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| EJEast Jordan Foundry LLC | Elmira | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| FPFritz Products | River Rouge | MI | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| GLGreat Lakes Die Cast | Muskegon | MI | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| LCLinamar Corporation | Alma | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| LPLinn Products INC | Charlotte | MI | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| MTMelling Tool Company | Battle Creek | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| MTMetal Technologies INC -three Rivers Gray Iron | Three Rivers | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| NTNew Technology Steel | Erie | MI | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| RSRing Screw Works | Madison Heights | MI | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| SAShipston Aluminum Technologies | Fruitport | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| CEClark Engineering Company | Owosso | MI | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
Gerdau Macsteel, INC. | Jackson | MI | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ACAlgonac Cast Products INC | Algonac | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| ACArca Cast INC | Bay City | MI | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| AFAC Foundry Incorporated dba Melling Engineered Aluminum Castings | Battle Creek | MI | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| AMAmeriti Manufacturing Company | Detroit | MI | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ACArenac Casting INC | Standish | MI | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| BPBar Processing CORP - Monroe | Monroe | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| BABenteler Automotive Holland | Holland | MI | Primary Metal Manufacturing331318 | 100-499 | ◐ LIKELY ACTIVE |
| BLBrazeway, LLC Adrian | Adrian | MI | Primary Metal Manufacturing331316 | 20-99 | ◐ LIKELY ACTIVE |
| BNBrembro North America, Inc. | Homer | MI | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| BIBuhlerPrince, Inc. | Holland | MI | Primary Metal Manufacturing331523 | 100-499 | ◐ LIKELY ACTIVE |
| CCCadillac Casting, INC (b2178) | Cadillac | MI | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| CFCentury Foundry INC | Muskegon Heights | MI | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| CFCentury Foundry Inc-2524 Park | Muskegon Heights | MI | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| DND & N Bending CORP. | Romeo | MI | Primary Metal Manufacturing331491 | 100-499 | ◐ LIKELY ACTIVE |
| DPDundee Products | Dundee | MI | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| ESEmerald Steel Processing | Madison Heights | MI | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| EIEps Industries, INC | Ferrysburg | MI | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| GPGf Proto-type Plaster INC | Fraser | MI | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
| HSHeidtman Steel Products Inc.-Bedford Tube Mill | Erie | MI | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| HHH & H Tube | Vanderbilt | MI | Primary Metal Manufacturing331420 | 20-99 | ◐ LIKELY ACTIVE |