| WMWestern Machine & Fab, Inc. | Union City | CA | — | ◇ UNVERIFIED |
| WMWestern Metals Recycling, LLC | Pueblo | CO | — | ◇ UNVERIFIED |
 Western Precision Products INC | Milwaukie | OR | — | ◇ UNVERIFIED |
| WSWestern Steel Casting CO | Seattle | WA | — | ◇ UNVERIFIED |
| WGWestfield Gage CO INC | Southwick | MA | — | ◇ UNVERIFIED |
| WHWest Haralson Machine, INC | Tallapoosa | GA | — | ◇ UNVERIFIED |
| WMWest Machine Products, INC. | Round Lake | IL | — | ◇ UNVERIFIED |
| WMWest Michigan Grinding and Machine | Muskegon | MI | — | ◇ UNVERIFIED |
| WSWest Salisbury Found/west Salisbury Plt | West Salisbury | PA | — | ◇ UNVERIFIED |
| WSWest Side Machine Tool | Elkhorn | WI | — | ◇ UNVERIFIED |
| WSWest Side Tool & Die CO | Kingston | PA | — | ◇ UNVERIFIED |
| WSWest Star Manufacturing | Downey | CA | — | ◇ UNVERIFIED |
| WFWestwick Foundry LTD | Galena | IL | — | ◇ UNVERIFIED |
| WBWg Benjey INC | Alpena | MI | — | ◇ UNVERIFIED |
| WGWgs Global Services L C | Etowah | TN | — | ◇ UNVERIFIED |
| WGWgs Global Services Lc | Marinette | WI | — | ◇ UNVERIFIED |
| WCWheelabrator Cast Product | Walterboro | SC | — | ◇ UNVERIFIED |
| WMWhetstone Machine INC | Winona | MN | — | ◇ UNVERIFIED |
| WIWh Industries Delaware, INC. | Jacksonville | AL | — | ◇ UNVERIFIED |
| WBWhite Bear Makerspace | White Bear Township | MN | — | ◇ UNVERIFIED |
| WEWhite Eagle Machine Shop | Tucson | AZ | — | ◇ UNVERIFIED |
| WRWhite Racker CO INC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| WMWhites Machine Shop | Springfield | MO | — | ◇ UNVERIFIED |
| WEWhitham Enterprises | Moscow | KS | — | ◇ UNVERIFIED |
| WCWhitman Casting INC | Whitman | MA | — | ◇ UNVERIFIED |
| WGWhittier Grinding | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| WFWichita Falls Manufacturing | Wichita Falls | TX | — | ◇ UNVERIFIED |
| WMWieber Machine, LLC | Green Bay | WI | — | ◇ UNVERIFIED |
| WSWie Sic Machine, INC. | Lowell | MA | — | ◇ UNVERIFIED |
| WTWiesmann Tool Inc. | Alpharetta | GA | — | ◇ UNVERIFIED |
| WPWiggby Precision Machine CORP | Brooklyn | NY | — | ◇ UNVERIFIED |
| WDWilderness Design & Manufacturing INC | Orem | UT | — | ◇ UNVERIFIED |
| WMWildridge Machine, LLC | Lexington | TN | — | ◇ UNVERIFIED |
| WMWildwood Metals, INC. | Fresno | CA | — | ◇ UNVERIFIED |
| WVWillamette Valley Company - Precision Technologies | Eugene | OR | — | ◇ UNVERIFIED |
| WAWillenborg Associates, INC. | Imlay City | MI | — | ◇ UNVERIFIED |
| WCWilliam Collins Company | Central Falls | RI | — | ◇ UNVERIFIED |
| WJWilliam J Labb Sons | Philadelphia | PA | — | ◇ UNVERIFIED |
| WCWilliams Company INC. | Whiting | KS | — | ◇ UNVERIFIED |
| WSWilliam Scott | Oaklyn | NJ | — | ◇ UNVERIFIED |
| WMWilliams Machine Works Inc, Facility Number 2 | Pascagoula | MS | — | ◇ UNVERIFIED |
| WMWilliams Manufacturing | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| WFWilliamsport Foundry Co/williamsport | Williamsport | PA | — | ◇ UNVERIFIED |
| WCWillis Commercial, LLC | Windsor | CT | — | ◇ UNVERIFIED |
| WMWilo Machine CO | Cedarburg | WI | — | ◇ UNVERIFIED |
| WUWilo USA | Cedarburg | WI | — | ◇ UNVERIFIED |
| WMWilson Machine LLC | Arcola | MO | — | ◇ UNVERIFIED |
| WMWilson Mold & Machine Corporation | Wilson | NC | — | ◇ UNVERIFIED |
| WTWilson Tool Corporation | Rockford | IL | — | ◇ UNVERIFIED |
| WHWindmill Holdings, LLC | Hamilton | MT | — | ◇ UNVERIFIED |
| WKWindy Knoll Machine, LLC | Sugarcreek | OH | — | ◇ UNVERIFIED |
| WPWinona Production Services, INC. | Winona | MN | — | ◇ UNVERIFIED |
| WMWinterville Machine Works, INC | Winterville | NC | — | ◇ UNVERIFIED |
| WCWirco Castings INC | New Athens | IL | — | ◇ UNVERIFIED |
| WMWiregrass Machine, INC. | Dothan | AL | — | ◇ UNVERIFIED |
| WRWire Rope Corporation of America-kansas City | Kansas City | MO | — | ◇ UNVERIFIED |
| WPWisconsin Precision Casting Corporation | Lake Geneva | WI | — | ◇ UNVERIFIED |
| WMWiser Manufacturing | Benson | UT | — | ◇ UNVERIFIED |
| WEWolfe Engineering, INC. | San Jose | CA | — | ◇ UNVERIFIED |
| WIWolf Industries LLC | Thomasville | NC | — | ◇ UNVERIFIED |
| WSWolf Steel Foundry INC | Hubbard | OR | — | ◇ UNVERIFIED |
| WFWollaston Foundry | Quincy | MA | — | ◇ UNVERIFIED |
| WPWolverine Production & Engineering INC | Harrison Township | MI | — | ◇ UNVERIFIED |
| WMWonder Machine Services, INC. | Avon | OH | — | ◇ UNVERIFIED |
| WOWoodcrafters of Virginia | Virginia Beach | VA | — | ◇ UNVERIFIED |
| WMWood Machine INC | Eagan | MN | — | ◇ UNVERIFIED |
| WPWoods Precision Products, INC. | Owasso | OK | — | ◇ UNVERIFIED |
| WMWordingham Machine Co., INC. | Rochester | NY | — | ◇ UNVERIFIED |
| WMWorkman Mobile Welding LLC | Troy | MO | — | ◇ UNVERIFIED |
| WCWorld Class Precision Products | Bayfield | WI | — | ◇ UNVERIFIED |
| WFWorld Fabricators Inc | Eatonville | WA | — | ◇ UNVERIFIED |
| WFWorldwide Flight Services | Las Vegas | NV | — | ◇ UNVERIFIED |
| WMWoven Metal Products, Inc. | Alvin | TX | — | ◇ UNVERIFIED |
| WIWpmw, INC. | Elverson | PA | — | ◇ UNVERIFIED |
| WMWray Machine Shop | Wray | CO | — | ◇ UNVERIFIED |
| WMWright Machine Monroe St | Seattle | WA | — | ◇ UNVERIFIED |
| WRWright Roller & Machine | Riverdale | IL | — | ◇ UNVERIFIED |
| WSWright Steel LLC | Harrison | AR | — | ◇ UNVERIFIED |
| WTW - Technology, INC. | Houston | TX | — | ◇ UNVERIFIED |
| WMWulfkrik Metals Processing, LLC | Beaver | PA | — | ◇ UNVERIFIED |
| WFWyoming Fire Fabrication Inc/dba Downey Welding | Shoshoni | WY | — | ◇ UNVERIFIED |
| WMWyoming Machinery Company: in | Gillette | WY | — | ◇ UNVERIFIED |
| WPWythe Precision Machine | Max Meadows | VA | — | ◇ UNVERIFIED |
| WBWyzer Biosciences | Auburndale | MA | — | ◇ UNVERIFIED |
| XTXactra Technologies, Inc. | Rochester | NY | — | ◇ UNVERIFIED |
| XFX Factor Machine & Design INC | Salem | OR | — | ◇ UNVERIFIED |
| XCXli Corporation | Rochester | NY | — | ◇ UNVERIFIED |
| XX-mil,inc. | Mount Orab | OH | — | ◇ UNVERIFIED |
| XMXtreme Machine INC. | Millville | UT | — | ◇ UNVERIFIED |
| YMYachtfish Marine | Seattle | WA | — | ◇ UNVERIFIED |
| YOYe Olde Machine Shoppe CO. | Orem | UT | — | ◇ UNVERIFIED |
| YMYesterday's Machine Shop | Schenectady | NY | — | ◇ UNVERIFIED |
| YAYoung and Daughters | Corinth | MS | — | ◇ UNVERIFIED |
| YCYoung Cimtech LLC | New Albany | IN | — | ◇ UNVERIFIED |
| YAYoungers and Sons Manufacturing CO INC | Viola | KS | — | ◇ UNVERIFIED |
| YMYoung Machine CO. | Monticello | UT | — | ◇ UNVERIFIED |
| ZMZala Machine Co., INC. | Hillsborough | NJ | — | ◇ UNVERIFIED |
| ZMZankowski Machine | Hazleton | PA | — | ◇ UNVERIFIED |
| ZTZebra Test Facility | Hyattsville | MD | — | ◇ UNVERIFIED |
| ZAZephyr Aircraft Engines INC | Zephyrhills | FL | — | ◇ UNVERIFIED |
