| WHWilmer Hernandez | Spring | TX | — | ◇ 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 |
| WRWilson Railing & Metal Fabricating Company | Park City | IL | — | ◇ UNVERIFIED |
| WTWilson Tool Corporation | Rockford | IL | — | ◇ UNVERIFIED |
| WRWinding Roofing Company INC. | Wauwatosa | WI | — | ◇ UNVERIFIED |
| WHWindmill Holdings, LLC | Hamilton | MT | — | ◇ UNVERIFIED |
| WIW Industries | Detroit | MI | — | ◇ UNVERIFIED |
| WKWindy Knoll Machine, LLC | Sugarcreek | OH | — | ◇ UNVERIFIED |
| WHWinona Heating - Ventilating Company | Winona | MN | — | ◇ UNVERIFIED |
| WIWinston Industries, INC. | Ivyland | PA | — | ◇ UNVERIFIED |
| WMWinterville Machine Works, INC | Winterville | NC | — | ◇ UNVERIFIED |
| WMWiregrass Machine, INC. | Dothan | AL | — | ◇ UNVERIFIED |
| WSWireless Structures Consulting INC | Salem | OR | — | ◇ UNVERIFIED |
| WMWiser Manufacturing | Benson | UT | — | ◇ UNVERIFIED |
| WWWishart Welding & General Fabrication INC | Clackamas | OR | — | ◇ UNVERIFIED |
| WFWitherup Fabrication & Erection INC | Kennerdell | PA | — | ◇ UNVERIFIED |
| WCWizard Control Systems INC | Salem | OR | — | ◇ UNVERIFIED |
| WHWl Hall Company | Hopkins | MN | — | ◇ UNVERIFIED |
| WSW.m. Sprinkman | Waukesha | WI | — | ◇ UNVERIFIED |
| WEWolfe Engineering, INC. | San Jose | CA | — | ◇ UNVERIFIED |
| WIWolf Industries LLC | Thomasville | NC | — | ◇ UNVERIFIED |
| WPWolverine Production & Engineering INC | Harrison Township | MI | — | ◇ UNVERIFIED |
| WPWonderland Products, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| WMWonder Machine Services, INC. | Avon | OH | — | ◇ UNVERIFIED |
| WMWonder Metals Corporation | Redding | CA | — | ◇ UNVERIFIED |
| WMWood Machine INC | Eagan | MN | — | ◇ UNVERIFIED |
| WPWoods Precision Products, INC. | Owasso | OK | — | ◇ UNVERIFIED |
| WMWoodstock Metal Roofing | Woodstock | GA | — | ◇ UNVERIFIED |
| WAWorcester Air Conditioning,llc | Ashland | MA | — | ◇ 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 |
| WWWorldwide Welding Services | Humble | TX | — | ◇ UNVERIFIED |
| WWWorley Welding Works, INC. | Levelland | TX | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | Fontana | CA | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | N Las Vegas | NV | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | Alpharetta | GA | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | Benton Harbor | MI | — | ◇ UNVERIFIED |
| WIWorthington Industries (0285030456) | Wooster | OH | — | ◇ UNVERIFIED |
| WSWorthington Steelpac (0511005008) | North Lewisburg | OH | — | ◇ UNVERIFIED |
| WMWorth Metals, Inc. | Green Cove Springs | FL | — | ◇ UNVERIFIED |
| WMWoven Metal Products, Inc. | Alvin | TX | — | ◇ UNVERIFIED |
| WIWpmw, INC. | Elverson | PA | — | ◇ UNVERIFIED |
| WIWps Industries INC | West Monroe | LA | — | ◇ UNVERIFIED |
| WMWray Machine Shop | Wray | CO | — | ◇ UNVERIFIED |
