| WWWhite Welding Company, INC. | Waterbury | CT | — | ◇ UNVERIFIED |
| WEWhitham Enterprises | Moscow | KS | — | ◇ UNVERIFIED |
| WEWhitman Enterprises, Inc. | Lakeland | FL | — | ◇ UNVERIFIED |
| WGWhittier Grinding | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| WTWhitworth Tool, INC. | Sample | KY | — | ◇ UNVERIFIED |
| WSWholesale Sheet Metal INC. | Kansas City | KS | — | ◇ UNVERIFIED |
| WBWicked Bumpers,LLC | Dawson | NE | — | ◇ UNVERIFIED |
| WPWicklander Printing CORP | Chicago | IL | — | ◇ UNVERIFIED |
| WMWieber Machine, LLC | Green Bay | WI | — | ◇ UNVERIFIED |
| WRWiegmann & Rose | Oakland | CA | — | ◇ UNVERIFIED |
| WSWie Sic Machine, INC. | Lowell | MA | — | ◇ UNVERIFIED |
| WTWiesmann Tool Inc. | Alpharetta | GA | — | ◇ UNVERIFIED |
| WPWiggby Precision Machine CORP | Brooklyn | NY | — | ◇ UNVERIFIED |
| WDWilburn Darryl Donna | Pineville | LA | — | ◇ UNVERIFIED |
| WSWil-clair Sheet Metal, LLC | North Kansas City | MO | — | ◇ UNVERIFIED |
| WMWilco Manufacturing, LLC | Lafayette | LA | — | ◇ UNVERIFIED |
| WBWilcox Brothers INC | Walnut Grove | CA | — | ◇ UNVERIFIED |
| WDWilderness Design & Manufacturing INC | Orem | UT | — | ◇ UNVERIFIED |
| WMWildridge Machine, LLC | Lexington | TN | — | ◇ UNVERIFIED |
| WMWildwood Metals, INC. | Fresno | CA | — | ◇ UNVERIFIED |
| WAWilkes and Mclean, LTD. | Schaumburg | IL | — | ◇ UNVERIFIED |
| WDWilkins Design & Mfg INC Dba Wilschur Design & Mfg INC | Santa Ana | CA | — | ◇ UNVERIFIED |
 Willamette Technical Fabricators, LLC | Portland | OR | — | ◇ UNVERIFIED |
| WVWillamette Valley Company - Precision Technologies | Eugene | OR | — | ◇ UNVERIFIED |
| WAWillenborg Associates, INC. | Imlay City | MI | — | ◇ UNVERIFIED |
| WIWillfab, INC. | Marietta | GA | — | ◇ UNVERIFIED |
| WTWillhoite Tool Company INC | Georgetown | KY | — | ◇ UNVERIFIED |
| WCWilliam Collins Company | Central Falls | RI | — | ◇ UNVERIFIED |
| WDWilliam D Ludlow | Ontario | CA | — | ◇ UNVERIFIED |
| WJWilliam J Labb Sons | Philadelphia | PA | — | ◇ UNVERIFIED |
| WRWilliam R Tiffany & Linda E Tiffany | Vale | OR | — | ◇ UNVERIFIED |
| WCWilliams Company INC. | Whiting | KS | — | ◇ UNVERIFIED |
| WSWilliam Scott | Oaklyn | NJ | — | ◇ UNVERIFIED |
| WDWilliams & Davis Boilers | Hutchins | TX | — | ◇ UNVERIFIED |
| WFWilliams Fabrication, INC. Dba Jenfab | Covington | VA | — | ◇ UNVERIFIED |
| WMWilliams Manufacturing | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| WSWilliam's Steel Company | Jackson | TN | — | ◇ UNVERIFIED |
| WSWilliams Steel Company | Greensboro | NC | — | ◇ UNVERIFIED |
| WCWillis Cnc, LLC | Grafton | OH | — | ◇ UNVERIFIED |
| WCWillis Commercial, LLC | Windsor | CT | — | ◇ UNVERIFIED |
| WTWillmore Tool & Die INC | Gallatin | TN | — | ◇ UNVERIFIED |
| WMWill-share Manufacturing, INC. | Saint Peters | MO | — | ◇ UNVERIFIED |
| WPWills Pro Custom Mfg | Fort Worth | TX | — | ◇ UNVERIFIED |
| WHWilmer Hernandez | Spring | TX | — | ◇ UNVERIFIED |
| WMWilo Machine CO | Cedarburg | WI | — | ◇ UNVERIFIED |
| WUWilo USA | Cedarburg | WI | — | ◇ UNVERIFIED |
| WIWilsey INC. | Chadwicks | NY | — | ◇ UNVERIFIED |
| WFWilson Fab, LLC | Sarasota | FL | — | ◇ 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 |
| WIWiltcher Industries, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| WCWilton Corporation | Finksburg | MD | — | ◇ UNVERIFIED |
| WTWinbco Tank Company, INC. | Hugoton | KS | — | ◇ UNVERIFIED |
| WMWinchester Metals INC | Winchester | VA | — | ◇ UNVERIFIED |
| WLWinchester/useco Litton Sys | Van Nuys | CA | — | ◇ UNVERIFIED |
| WSWinco Stamping, INC. | Miamisburg | OH | — | ◇ UNVERIFIED |
| WIWincraft INC - Corporate Office | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - Distribution Center | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - East Facility | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - Mark Street | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - West Facility | Winona | MN | — | ◇ UNVERIFIED |
| WRWinding Roofing Company INC. | Wauwatosa | WI | — | ◇ UNVERIFIED |
| WHWindmill Holdings, LLC | Hamilton | MT | — | ◇ UNVERIFIED |
| WCWindy City Cutting Die, Inc. | Bensenville | IL | — | ◇ UNVERIFIED |
| WKWindy Knoll Machine, LLC | Sugarcreek | OH | — | ◇ UNVERIFIED |
 Win-holt Equipment CORP. | Allentown | PA | — | ◇ UNVERIFIED |
| WHWinona Heating - Ventilating Company | Winona | MN | — | ◇ UNVERIFIED |
| WPWinona Production Services INC - East Building | Winona | MN | — | ◇ UNVERIFIED |
| WIWinston Industrial Fabrication, LLC | Warminster | PA | — | ◇ UNVERIFIED |
| WIWinston Industries, INC. | Ivyland | PA | — | ◇ UNVERIFIED |
| WEWinter Equipment Company | Willoughby | OH | — | ◇ UNVERIFIED |
| WIW International LLC | Madison Heights | MI | — | ◇ UNVERIFIED |
| WMWinterville Machine Works, INC | Winterville | NC | — | ◇ UNVERIFIED |
| WMWiregrass Machine, INC. | Dothan | AL | — | ◇ UNVERIFIED |
| WGWire Guard Systems INC | Huntington Park | CA | — | ◇ 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 |
| WSWitts Services, LLC | Bergholz | OH | — | ◇ UNVERIFIED |
| WCWizard Control Systems INC | Salem | OR | — | ◇ UNVERIFIED |
| WHWj Haas Manufacturing Corporation | Hastings | MN | — | ◇ UNVERIFIED |
| WMWJ Molding Inc. | Schaumburg | IL | — | ◇ UNVERIFIED |
| WMWj Molding INC. | Schaumburg | IL | — | ◇ UNVERIFIED |
| WPWjm Partners INC. | East Bernard | TX | — | ◇ UNVERIFIED |
| WHWl Hall Company | Hopkins | MN | — | ◇ UNVERIFIED |
| WLW.m Lyles CO | Moreno Valley | CA | — | ◇ UNVERIFIED |
| WLW.m Lyles CO | Temecula | CA | — | ◇ UNVERIFIED |
| WSW.m. Sprinkman | Waukesha | WI | — | ◇ UNVERIFIED |
| WVWnco Valve International, INC. | Odessa | TX | — | ◇ UNVERIFIED |
| WWWoerner Wire Works, INC. | Omaha | NE | — | ◇ UNVERIFIED |
| WEWolfe Engineering, INC. | San Jose | CA | — | ◇ UNVERIFIED |
| WIWolf Industries LLC | Thomasville | NC | — | ◇ UNVERIFIED |
| WTWolf Technologies, LLC | Douglassville | PA | — | ◇ UNVERIFIED |
| WPWolverine Production & Engineering INC | Harrison Township | MI | — | ◇ UNVERIFIED |
| WMWonder Machine Services, INC. | Avon | OH | — | ◇ UNVERIFIED |
| WMWonder Metals Corporation | Redding | CA | — | ◇ UNVERIFIED |
| WGWood Group USA INC - Longmont Facility | Longmont | CO | — | ◇ UNVERIFIED |
