| TFT&b Foundry Company | Cleveland | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TFTexas Foundaries | Lufkin | TX | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TBThe Blanchester Foundry CO | Blanchester | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TFThe Foundry INC | Mead | WA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TGThe General Casting Company - Toledo Street | Delaware | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TSThe Shredder Company | Canutillo | TX | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TFThistle Foundry | Bluefield | VA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TPThreaded Products CO | Richmond | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TKTool King INC | Wheeling | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| TMTri-way Manufacturing | Roseville | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ULUS Lock & Hdwr Co/columbia | Columbia | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| UPU.s. Pipe Fabrication | Olivehurst | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| USU S Pipe & Foundry Company INC | Burlington Township | NJ | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| USUS Steel - Ambridge | Ambridge | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VIVaricast INC | Vancouver | WA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VIVermilion Iron Works | Hoopeston | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VCVermont Castings | Randolph | VT | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VCVictaulic CO Amer/allentown Facility | Allentown | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VPViking Pump Inc-alloys Foundry | Cedar Falls | IA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VMVilter Manufacturing Corporation - Milwaukee | Milwaukee | WI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VMVirginia Metalcrafters INC | Waynesboro | VA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WMWalker Machine and Foundry | Roanoke | VA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WFWatsontown Foundry | Watsontown | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
 Waupaca Foundry INC Warehouse | Waupaca | WI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WSWest Salisbury Found/west Salisbury Plt | West Salisbury | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WFWestwick Foundry LTD | Galena | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WCWheelabrator Cast Product | Walterboro | SC | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WCWhitman Casting INC | Whitman | MA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WFWilliamsport Foundry Co/williamsport | Williamsport | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WCWirco Castings INC | New Athens | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WRWire Rope Corporation of America-kansas City | Kansas City | MO | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| XFXenia Foundry | Xenia | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ZIZurn Ind Llc/cast Metals Div | Erie | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AGAustin Gray Iron Foundry | Sheboygan | WI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| FFerroloy | Wichita | KS | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| KFKelly Foundry & Machine Company, INC. | Elkins | WV | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| NCNorthland Castings Corporation | Hart | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| PGPacific Gear Technology, INC. | Norco | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| UEUnion Electric Akers | Avonmore | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WMWa317943601 - Mackenzie Castings LLC | Arlington | WA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| 1M105584 - Metaldyne Sinterforged Products LLC | North Vernon | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| 1I107328 - Interstate Castings | Indianapolis | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| 7S72603 - Synehi Casting | Greenwood | SC | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| 9S94571 - Smith Foundry Company | Minneapolis | MN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| 9W96599 - Winona Production Services, INC. | Winona | MN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ABA B & I Foundry | Oakland | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AAccucast/sibleyfoundry | South Bend | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ACAcme Castings INC | Huntington Park | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ACAcme Castings INC | Huntington Park | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AFAlhambra Foundry CO LTD | Alhambra | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
