| WFWestside Fabrication and Machining | Plymouth | MI | — | ◇ UNVERIFIED |
| WSWest Star Construction | Kingsburg | CA | — | ◇ UNVERIFIED |
| WVWest Virginia Steel CORP | Poca | WV | — | ◇ UNVERIFIED |
| WVWest Virginia Steel CORP | Charleston | WV | — | ◇ UNVERIFIED |
| WVWest Virginia Steel Corporation | Poca | WV | — | ◇ UNVERIFIED |
| WWWest Warwick Welding, INC. | West Warwick | RI | — | ◇ UNVERIFIED |
| WCWheco CORP | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
 Whelan Machine & Tool LLC | Louisville | KY | — | ◇ UNVERIFIED |
| WEWhitacre Engineering CO | Liverpool | NY | — | ◇ UNVERIFIED |
| WFWhite Fab INC | Birmingham | AL | — | ◇ UNVERIFIED |
| WSWhites Steel, Inc. | Indio | CA | — | ◇ UNVERIFIED |
| WBWicked Bumpers,LLC | Dawson | NE | — | ◇ UNVERIFIED |
| WSWil-clair Sheet Metal, LLC | North Kansas City | MO | — | ◇ UNVERIFIED |
| WWWildeck West Dba Ladder Industries | Goodyear | AZ | — | ◇ UNVERIFIED |
 Willamette Technical Fabricators, LLC | Portland | OR | — | ◇ UNVERIFIED |
| WDWilliam D Ludlow | Ontario | CA | — | ◇ UNVERIFIED |
| WBWilliams Bridge Company | Bessemer | AL | — | ◇ UNVERIFIED |
| WMWilliams Machine Works INC | Moss Point | MS | — | ◇ UNVERIFIED |
| WMWilliams Machine Works Inc, Facility Number 2 | Pascagoula | MS | — | ◇ UNVERIFIED |
| WMWilliams Manufacturing | Sylmar | CA | — | ◇ UNVERIFIED |
| WSWilliam's Steel Company | Jackson | TN | — | ◇ UNVERIFIED |
| WSWilliams Steel Company | Greensboro | NC | — | ◇ UNVERIFIED |
| WMWill-share Manufacturing, INC. | Saint Peters | MO | — | ◇ UNVERIFIED |
| WEWilson Equipment Repair INC | Morgantown | WV | — | ◇ UNVERIFIED |
| WCWilton Corporation | Finksburg | MD | — | ◇ UNVERIFIED |
| WTWinbco Tank Company, INC. | Hugoton | KS | — | ◇ UNVERIFIED |
| WSWindsor Steel , INC | Elkhart | IN | — | ◇ UNVERIFIED |
| WIWirecrafters, INC. | Louisville | KY | — | ◇ UNVERIFIED |
 Wisconsin Oven CORP | East Troy | WI | — | ◇ UNVERIFIED |
| WSWitts Services, LLC | Bergholz | OH | — | ◇ UNVERIFIED |
| WPWjm Partners INC. | East Bernard | TX | — | ◇ UNVERIFIED |
| WVWnco Valve International, INC. | Odessa | TX | — | ◇ UNVERIFIED |
| WWWoerner Wire Works, INC. | Omaha | NE | — | ◇ UNVERIFIED |
| WGWood Group USA INC - Longmont Facility | Longmont | CO | — | ◇ UNVERIFIED |
| WGWood Group USA INC - Longmont Facility | Mead Area | CO | — | ◇ UNVERIFIED |
| WFWoods Fabrication LLC | Taylorsville | GA | — | ◇ UNVERIFIED |
| WIWoodside Investment INC Dba Michael & CO | Lockeford | CA | — | ◇ UNVERIFIED |
| WCWoodward Controls INC | Niles | IL | — | ◇ UNVERIFIED |
 Woodward Hrt, INC. | Pacoima | CA | — | ◇ UNVERIFIED |
| WIWoodward INC | Rockford | IL | — | ◇ UNVERIFIED |
| WWWood Wrench, INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| WSWoolf Steel, Incorporated | Middletown | PA | — | ◇ UNVERIFIED |
| WCWorcester County Welding CORP. | Rochdale | MA | — | ◇ UNVERIFIED |
| WIWord Industries, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| WEWorkforce Enterprises Wfe, INC. | Galt | CA | — | ◇ UNVERIFIED |
| WMWorld Marine of Mississippi, Llc, West | Pascagoula | MS | — | ◇ UNVERIFIED |
| WDWorth Division | Fort Worth | TX | — | ◇ UNVERIFIED |
| WMWorthington Metal Fabricators, LLC Dba Sharon Stairs (1677011204) | Akron | OH | — | ◇ UNVERIFIED |
| WWrayco | Stow | OH | — | ◇ UNVERIFIED |
 Wright Manufacturing LLC | Portland | OR | — | ◇ UNVERIFIED |
| WIWrights Iron & Steel Works | Manassas Park | VA | — | ◇ UNVERIFIED |
| WFWsb Fabrication LLC | Sandy | OR | — | ◇ UNVERIFIED |
 W & W Afco Steel | Little Rock | AR | — | ◇ UNVERIFIED |
| W&w Afco Steel | Lubbock | TX | — | ◇ UNVERIFIED |
| WMWyatt Manufacturing New Facility | South Huntingdon, Township of | PA | — | ◇ UNVERIFIED |
| WSWyatt Shiver Construction/stateline Steel, INC. | Gordon | AL | — | ◇ UNVERIFIED |
| WTWyoming Ts INC. Dba Tornado Shelters INC | Caddo | OK | — | ◇ UNVERIFIED |
| XOXpl Offsite, LLC | Decatur | AL | — | ◇ UNVERIFIED |
| XMXtreme Manufacturing | Las Vegas | NV | — | ◇ UNVERIFIED |
| YUYajima Usa, Limited | Reno | NV | — | ◇ UNVERIFIED |
| YLYarber, LLC | Northport | AL | — | ◇ UNVERIFIED |
| YGYesac Georgia Corporation | Lagrange | GA | — | ◇ UNVERIFIED |
| YSYh Sheet Metal CO | Oakland | CA | — | ◇ UNVERIFIED |
| YIYla, INC | Benicia | CA | — | ◇ UNVERIFIED |
| YSYoder Steel Corporation | Manassas | VA | — | ◇ UNVERIFIED |
| YAYork Automotive Welding & Fabrication LLC | York | PA | — | ◇ UNVERIFIED |
| YMYukon Mfg CO | Litchfield | MI | — | ◇ UNVERIFIED |
| YMYulista Management Services, INC. | Madison | AL | — | ◇ UNVERIFIED |
| ZSZee Systems INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| ZLZenergii, LLC | Miami Lakes | FL | — | ◇ UNVERIFIED |
| ZSZimmerman Steel & Supply Company, LLC | Dalton | OH | — | ◇ UNVERIFIED |
| ZAZodiac Aerospace - Industry | Garden Grove | CA | — | ◇ UNVERIFIED |
| ZIZorich Industries, INC. | Columbiana | OH | — | ◇ UNVERIFIED |
| ZSZottola Steel Corporation | Pittsburgh | PA | — | ◇ UNVERIFIED |
| ZCZuckerman CO INC | Winchester | VA | — | ◇ UNVERIFIED |
