| DFDayton Forging and Heat Treating | Dayton | OH | — | ◇ UNVERIFIED |
| DFDekalb Forge CO | Dekalb | IL | — | ◇ UNVERIFIED |
| DIDixie Industries | Chattanooga | TN | — | ◇ UNVERIFIED |
| DSDubuque Stamping & Manufacturing INC | Dubuque | IA | — | ◇ UNVERIFIED |
| ECEaton Corporation | South Bend | IN | — | ◇ UNVERIFIED |
| EMEaton Mdh Company INC | Kearney | NE | — | ◇ UNVERIFIED |
| ECEyelet Crafters INC | Waterbury | CT | — | ◇ UNVERIFIED |
| FAFloyd and Beasley Transfer CO | Sycamore | AL | — | ◇ UNVERIFIED |
| FMFord Motor CO | Chicago Heights | IL | — | ◇ UNVERIFIED |
| FMFord Motor CO - Woodhaven Forging Plant | Woodhaven | MI | — | ◇ UNVERIFIED |
| FCForged Components Humble Facility | Humble | TX | — | ◇ UNVERIFIED |
| FCForged Components, INC. | Navasota | TX | — | ◇ UNVERIFIED |
| FCForged Components, INC. | Kountze | TX | — | ◇ UNVERIFIED |
| FLFormtech LLC | Royal Oak | MI | — | ◇ UNVERIFIED |
| FVFox Valley Forge CO | Aurora | IL | — | ◇ UNVERIFIED |
| GDGeneral Dynamics Ots (wilkes-barre) LLC - Main Facility | Wilkes Barre | PA | — | ◇ UNVERIFIED |
| HCHeat & Control INC | Hayward | CA | — | ◇ UNVERIFIED |
| HFHhi Formtech-fraser | Fraser | MI | — | ◇ UNVERIFIED |
| HFHhi - Formtech LLC | Troy | MI | — | ◇ UNVERIFIED |
| IFIllinois Forge CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| IFImpact Forge Incorporated | Columbus | IN | — | ◇ UNVERIFIED |
| JIJernberg Industries INC | Chicago | IL | — | ◇ UNVERIFIED |
| MFMaass Flange Corp.- Sealy | Sealy | TX | — | ◇ UNVERIFIED |
| MFMeadville Forging Co/meadville Plt | Meadville | PA | — | ◇ UNVERIFIED |
| MLMetaldyne LLC | North Vernon | IN | — | ◇ UNVERIFIED |
| MCMetform CORP | Savanna | IL | — | ◇ UNVERIFIED |
| MIMsp Industries | Oxford | MI | — | ◇ UNVERIFIED |
| PFPortland Forge an Alleghenyte Chnology CO | Lebanon | KY | — | ◇ UNVERIFIED |
| PFPortland Forge, an Allegheny Teledyne Company | Portland | IN | — | ◇ UNVERIFIED |
| PPPrecision Pulley & Idler INC Corning Plants | Corning | IA | — | ◇ UNVERIFIED |
| PCPresrite CORP Jefferson Div | Jefferson | OH | — | ◇ UNVERIFIED |
| PRProgress Rail | Atchison | KS | — | ◇ UNVERIFIED |
| RCRexnord Corporation | Morganton | NC | — | ◇ UNVERIFIED |
 Rittal North America, LLC (0111000132) | Urbana | OH | — | ◇ UNVERIFIED |
| SFScot Forge CO | Franklin Park | IL | — | ◇ UNVERIFIED |
| SPShannon Precision Fastener | Madison Heights | MI | — | ◇ UNVERIFIED |
| SESoutheastern Extrusion & Tool INC | Florence | AL | — | ◇ UNVERIFIED |
 Steel Industries Plant 1 | Detroit | MI | — | ◇ UNVERIFIED |
| SFStorms Forge Incorporated | Springfield, City of | MA | — | ◇ UNVERIFIED |
| SMSwagelok Manufacturing Co., LLC | Solon | OH | — | ◇ UNVERIFIED |
| TUTekfor USA | Wooster | OH | — | ◇ UNVERIFIED |
| TPThyssenkrupp Precision Forge INC | Selma | NC | — | ◇ UNVERIFIED |
| TBToyota Boshoku (formerly Arj Manufacturing, Llc) | Jackson | TN | — | ◇ UNVERIFIED |
| UAUS Army Scranton Army Ammunition Plant | Scranton | PA | — | ◇ UNVERIFIED |
| USU S Army Watervliet Arsenal | Watervliet | NY | — | ◇ UNVERIFIED |
| UTUS Tsubaki Automotive Division Manufacturing Plant | Chicopee | MA | — | ◇ UNVERIFIED |
| WAWeatherford Artificial Lift Systems INC | Greenville | TX | — | ◇ UNVERIFIED |
| WCWyman-gordon CO | Worcester | MA | — | ◇ UNVERIFIED |
| WFWyman-gordon Forgings,inc. | Rockaway | NJ | — | ◇ UNVERIFIED |
| 1T1116 - Tremont, PA | Tremont | PA | 20–99 | ◐ LIKELY ACTIVE |
