| JRJ R Hoe & Sons INC | Middlesboro | KY | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| LFLanam Foundry | New Martinsville | WV | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| MDMcwane Ductile | Coshocton | OH | Primary Metal Manufacturing331511 | 500+ | ◐ LIKELY ACTIVE |
| MMMidwest Manufacturing & Logistics LLC | Minster | OH | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| MMMontague Machine CO | Montague (turners Falls) | MA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| NANorth American Royalties INC. Wheland Automotive Industries | Chattanooga | TN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| OKO. K. Foundry Company, INC. | Richmond | VA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| OFOpelika Foundry | Opelika | AL | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| PPPa Precision Cast Pa/lebanon City Plt | Lebanon | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| PCPenn-Mar Castings LLC | Hanover | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| PCPerformance Castings, LLC | Erie | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| PCPremier Casting Services, INC. | Waterloo | IA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| PRPuerto Rico Steel Products CORP | Coto Laurel | PR | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| RMReed Mfg/erie | Erie | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| RCRichmond Casting Company | Richmond | IN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| SLShenango, LLC | Terre Haute | IN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| SFSpecified Fittings INC | Bellingham | WA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| SCSpring City Electrical Mfg. Co. | Spring City | PA | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| SFStateline Foundries Inc | Roscoe | IL | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| TCThe Chris Erhart Foundry and Machine Co. | Cincinnati | OH | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| TFTownley Foundry & Machine Company, INC | Candler | FL | Primary Metal Manufacturing331492 | 100-499 | ◐ LIKELY ACTIVE |
| TPTyler Pipe CO | Tyler | TX | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| UPUS Pipe & Foundry CO | Birmingham | AL | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| VLVictaulic Lawrenceville | Tioga | PA | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| WTWear Tek | Spokane | WA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| WMWysong & Miles CO | Greensboro | NC | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| 1M105913 - Manchester Metals | North Manchester | IN | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| 1G106698 - Gartland Foundry Company | Terre Haute | IN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| ACAdvanced Cast Products/meadville | Meadville | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| ACAsama Coldwater Manufacturing Georgia | Warrenton | GA | Primary Metal Manufacturing331511 | — | ▲ REPORTED CLOSED |
| BFBama Foundry INC | Montgomery | AL | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| BSBarnmaster Supply LLC Dba Marnmaster | Ontario | CA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| CDCampbell Douglas Forrester Foundry CO | Kearny | NJ | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| CUCastings USA INC | New Philadelphia | OH | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| CFCumberland Foundry | Woonsocket | RI | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| EIEbaa Iron Jack Rabbit Division | Albany | TX | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| FCFarrar CORP | Norwich | KS | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| FIFranklin Iron Works, INC. | Thorsby | AL | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| FJFrazer & Jones Division of the Eastern Company | Syracuse | NY | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| GFGeorgia Financial Xiii Llc/avonmore Plt | Avonmore | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| GIGrede Ii - Biscoe, LLC | Biscoe | NC | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| GPGriffin Pipe Products CO | Florence | NJ | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| ICImperial Casting Company, INC. | Florence | AL | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| LFLagrange Foundry-lagrange | La Grange | MO | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| LMLeclaire Mfg CO | Bettendorf | IA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| LSLone Star Casting & Machine Partners | Kilgore | TX | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| MCMagic Circle Manufacturing Company | Coffeyville | KS | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| MGMando Georgia Casting Facility | Hogansville | GA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| MPMetalico Pgh INC | Pittsburgh | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| NFNashua Foundries, INC. | Nashua | NH | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |