| WFWestern Foundries INC | Longmont | CO | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| WOWhemco - Ohio Foundry INC (0302020023) | Lima | OH | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| WCWinchester Coatings | Winchester | KY | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| ECEsco Corporation | Portland | OR | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| HHorizon | Nephi | UT | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| HEHoward Engineering CO | Naugatuck | CT | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| CCCast Corporation | Hibbing | MN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| PAPacific Alloy Castings INC | South Gate | CA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| 9G93063 - Grede LLC | Saint Cloud | MN | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| AFAcheson Foundry & Machine Works, INC. | Chattanooga | TN | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| BCBct Cast Products LLC | West Allis | WI | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| BFBoyertown Foundry Company | New Berlinville | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| BNBrembro North America, Inc. | Homer | MI | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| CMCarolina Metal Castings #354 | Hardeeville | SC | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| CBClay & Bailey Mfg Company | Kansas City | MO | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| DFDakota Foundry, INC. | Webster | SD | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| DSDavis S #1 Facility | Dubberly | LA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| DSDidion & Sons Foundry CO | St. Peters | MO | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| DIDonsco Inc Mount Joy Foundry | Mount Joy | PA | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| GIGeorgia Iron Works INC | Grovetown | GA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| GLGreat Lakes Castings LLC | Ludington | MI | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| HFHallman Foundry | Sanford | NC | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| HMHamburg Mfg Inc/hamburg Plow Works Plt | Hamburg | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| HMHamburg Mfg Inc/plow Works Finishing | Hamburg | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| HMHL Mando America Corporation - G2 | Hogansville | GA | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| HFHodge Foundry | Greenville | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| JDJohn Deere Foundry - Waterloo Facility | Waterloo | IA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| 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 |