| PCPerma Cast CO | Pueblo | CO | Primary Metal Manufacturing331524 | 1-19 | ◐ LIKELY ACTIVE |
| SAScottsboro Aluminum Industries | Scottsboro | AL | Primary Metal Manufacturing331313 | 1-19 | ◐ LIKELY ACTIVE |
| TMTazewell Machine Works INC | Pekin | IL | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| WIWatry Industries | Sheboygan | WI | Primary Metal Manufacturing331524 | 100-499 | ◐ LIKELY ACTIVE |
| AAAlum Alloys Foundry | Sinking Spring | PA | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| APAtek Precision Castings | New Hampton | IA | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| BBBall Brass & Aluminum Foundry | Auburn | IN | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| BMBombardier Motor Corporation of America - Spruce Pine | Spruce Pine | NC | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| BMBremer Manufacturing | Elkhart Lake | WI | Primary Metal Manufacturing331310 | — | ◐ LIKELY ACTIVE |
| BMBrost Mansfield LLC Dba Brost Foundry | Mansfield | OH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| CTCasting Technologies Company-michigan Casting Ctr | Fruitport | MI | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| CFCentury Foundry INC | Muskegon Hts | MI | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| CFCoastal Foundry CO | Houston | TX | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| CPConsolidated Precision Products - Minneapolis | Bloomington | MN | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| GAGeneral Aluminum (1667070012) | Ravenna | OH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| GAGeneral Aluminum Manufacturing CO | Conneaut | OH | Primary Metal Manufacturing331523 | — | ◐ LIKELY ACTIVE |
| HIHarvey Industries LLC | Wabash | IN | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| HPHubbell Power Systems Leeds | Leeds | AL | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| MFMartin Foundry CO | Kansas City | MO | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| PFPalmer Foundry | Palmer | MA | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| PAPrecision Aluminum - Foundry Division | Rock Island | IL | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| TTTooling Technology | Fort Loramie | OH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| MTMelling Tool Company | Battle Creek | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| AFAluminum Foundry of Wisconsin, INC. | Lannon | WI | Primary Metal Manufacturing331520 | — | ◐ LIKELY ACTIVE |
Hillside Castings, LLC | Longview | TX | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| SCSt. Croix Castings, INC. | Woodville | WI | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| ACAlgonac Cast Products INC | Algonac | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| AAlsco | Portland | OR | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| 1W105273 - Wabash Castings Incorporated | Wabash | IN | Primary Metal Manufacturing331521 | 100-499 | ◐ LIKELY ACTIVE |
| AFAC Foundry Incorporated dba Melling Engineered Aluminum Castings | Battle Creek | MI | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| ABActive Brass Foundry | Telford | PA | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| AFAkron Foundry Company | Akron | OH | Primary Metal Manufacturing331524 | 500+ | ◐ LIKELY ACTIVE |
| APAlcast- Peoria | Peoria | IL | Primary Metal Manufacturing331524 | 100-499 | ◐ LIKELY ACTIVE |
| ADAndy's Deli & Mikolajczk | Chicago | IL | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
Armstrong Mold Corporation Foundry | East Syracuse | NY | Primary Metal Manufacturing331524 | 20-99 | ◐ 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 |
Chicago Magnesium Casting CO | Blue Island | IL | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| CLCurto Ligonier Foundries CO | Melrose Park | IL | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| DCDiamond Casting and Machine CO INC | Hollis | NH | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| DCDuro Cast | Somonauk | IL | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| EAErg Aerospace Corporation | Sparks | NV | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| FBFab Braze Corporation | Nashua | NH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| FWFort Worth Aluminum Foundry | Fort Worth | TX | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| GAGeneral Aluminum LLC, Ravenna | Ravenna | OH | Primary Metal Manufacturing331523 | 100-499 | ◐ LIKELY ACTIVE |
| HCHTCI, Co. | New Carlisle | OH | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| KMKing Model Company INC (1677011225) | Akron | OH | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| MAMagnesium Alloy Product CO | Compton | CA | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| MTMetal Technologies INC | Bloomfield | IN | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| NONew Oxford Aluminum (Genlyte-Signify) | New Oxford | PA | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |