| BVBeaver Valley Alloy Foundry CO | Monaca | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| CCCentrifugal Castings | Temple | TX | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| EFEagle Foundry | Eagle Creek | OR | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| HSHaven Steel Products, INC. | Haven | KS | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| MMMonett Metals INC | Monett | MO | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| OSOmaha Steel Castings | Wahoo | NE | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| FCFisher Cast Steel Products * | West Jefferson | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| HFHowell Foundry LLC | St. Francisville | LA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| MIMinncast INC | Fridley | MN | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| NSNorth Star Casteel Products | Seattle | WA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| RSRmf Steel Products | Grandview | MO | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| TFTexaloy Foundry | Floresville | TX | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| TGThompson Gundrilling INC | Van Nuys | CA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| ACArenac Casting INC | Standish | MI | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| BCBct Cast Products LLC | West Allis | WI | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| CMCircle Machine Rolls, INC. | Sebring | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| CSCoronado Steel CO | Youngstown | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| MIMcc International, INC. | Mc Donald | PA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| PFPearce Foundry, INC. | Prairieville | LA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| SRSpecialty Rolled Metals LLC Beaver Dam WI | Beaver Dam | WI | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| SFSuperior Forge and Steel | Pittsburgh | PA | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| WTWear Tek | Spokane | WA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| ASAmerican Spincast Inc. | Belton | TX | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| CCCol-Pump Company | Columbiana | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| DADavis Alloys Manufacturing, LLC | Sharpsville | PA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
Sawbrook Steel Casting LLC | Lockland | OH | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
Superior Forge & Steel New Castle | New Castle | PA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| WEWeir Esco | Portland | OR | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| WEWeir ESCO - Plant 3 | Portland | OR | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |