| UNUS Naval Weapons Station Yorktown - Cheatham Annex | Yorktown | VA | — | ◇ UNVERIFIED |
| UPU.s. Pipe Fabrication | Olivehurst | CA | — | ◇ UNVERIFIED |
| USU S Pipe & Foundry Company INC | Burlington Township | NJ | — | ◇ UNVERIFIED |
| UGUssc Group INC | Exton | PA | — | ◇ UNVERIFIED |
| USUS Steel - Ambridge | Ambridge | PA | — | ◇ UNVERIFIED |
| USUtility Specialized Metals | Sun Valley | CA | — | ◇ UNVERIFIED |
| VNVae Nortrak Cheyenne Inc/north America INC | Cheyenne | WY | — | ◇ UNVERIFIED |
| VIValmet INC | Hudson Falls | NY | — | ◇ UNVERIFIED |
| VWValve & Wellhead Specialists | Scott | LA | — | ◇ UNVERIFIED |
| VDVelvet Drive Transmissions | New Bedford | MA | — | ◇ UNVERIFIED |
| VMVermette Machine Company, INC. | Hammond | IN | — | ◇ UNVERIFIED |
| VIVermilion Iron Works | Hoopeston | IL | — | ◇ UNVERIFIED |
| VAVermont Aerospace Manufacturing | Lyndonville | VT | — | ◇ UNVERIFIED |
| VUVesuvius USA | Fisher | IL | — | ◇ UNVERIFIED |
| VCVictaulic CO Amer/allentown Facility | Allentown | PA | — | ◇ UNVERIFIED |
| VFVictaulic-horizon Facility | Nephi | UT | — | ◇ UNVERIFIED |
| VPViking Pump Inc-alloys Foundry | Cedar Falls | IA | — | ◇ UNVERIFIED |
| VMVilter Manufacturing Corporation - Milwaukee | Milwaukee | WI | — | ◇ UNVERIFIED |
| VMVirginia Metalcrafters INC | Waynesboro | VA | — | ◇ UNVERIFIED |
| VSVista Steel | Ventura | CA | — | ◇ UNVERIFIED |
| VFVossloh Fastening Systems | Mc Gregor | TX | — | ◇ UNVERIFIED |
| WMWagman Metal Products INC | York | PA | — | ◇ UNVERIFIED |
| WMWalker Machine and Foundry | Roanoke | VA | — | ◇ UNVERIFIED |
| WNWartsila N.a. INC. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| WTWasatch Tool & Die, INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| WIWastequip, INC. | Mulberry | FL | — | ◇ UNVERIFIED |
 Wastequip Manufacturing CO Dba Rayfo | Marissa | IL | — | ◇ UNVERIFIED |
| WFWatsontown Foundry | Watsontown | PA | — | ◇ UNVERIFIED |
 Waupaca Foundry, INC. - Plant 1 (ironwood) | Ironwood | MI | — | ◇ UNVERIFIED |
| Waupaca Foundry INC Warehouse | Waupaca | WI | — | ◇ UNVERIFIED |
| WMWcm Manufacturing LLC | Cypress | CA | — | ◇ UNVERIFIED |
| WIWcr INC. (0124010415) | Washington Court House | OH | — | ◇ UNVERIFIED |
| WEWeedon Engineering Co, INC | Jacksonville | FL | — | ◇ UNVERIFIED |
| WFWellman Friction Products Brook Park | Brookpark | OH | — | ◇ UNVERIFIED |
| WEWelsh Equipment INC | Dodge Center | MN | — | ◇ UNVERIFIED |
| WCWerner Company Louisville | Louisville | KY | — | ◇ UNVERIFIED |
| WSWesco Spring CO | Chicago | IL | — | ◇ UNVERIFIED |
| WIWestern Industrial Machine | Westminster | MD | — | ◇ UNVERIFIED |
 Western Industries INC | Watertown | WI | — | ◇ UNVERIFIED |
| WGWestfield Grinding Wheel | Westfield | MA | — | ◇ UNVERIFIED |
| WSWest Salisbury Found/west Salisbury Plt | West Salisbury | PA | — | ◇ UNVERIFIED |
| WFWestwick Foundry LTD | Galena | IL | — | ◇ UNVERIFIED |
| WCWheelabrator Cast Product | Walterboro | SC | — | ◇ UNVERIFIED |
| WCWhirl-air-flow CORP - Big Lake | Big Lake | MN | — | ◇ UNVERIFIED |
| WPWhitehall Products | Whitehall | MI | — | ◇ UNVERIFIED |
| WOWhite Oak Radiator Service Old Hwy 80 | White Oak | TX | — | ◇ UNVERIFIED |
| WRWhite Racker CO INC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| WCWhitman Casting INC | Whitman | MA | — | ◇ UNVERIFIED |
| WNWieland National Bronze | Roseville | MI | — | ◇ UNVERIFIED |
| WMWilliams Machine Works Inc, Facility Number 2 | Pascagoula | MS | — | ◇ UNVERIFIED |
