| SMSmart Metals | Lawrence | MA | — | ◇ UNVERIFIED |
| SESmith Equipment and Welding | Prineville | OR | — | ◇ UNVERIFIED |
| SMSmiths Machine and Welding Company INC | Brookhaven | MS | — | ◇ UNVERIFIED |
| SISmt Incorporated - Raleigh Plant | Raleigh | NC | — | ◇ UNVERIFIED |
| SASnappy Adp Div of Standex International | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| SISnyder Industries INC | Seattle | WA | — | ◇ UNVERIFIED |
| SPSoramatic Precision Machining | Warren | MI | — | ◇ UNVERIFIED |
| SBSotek Belrix | Hamburg | NY | — | ◇ UNVERIFIED |
| SESound Enhancement Products | Cary | IL | — | ◇ UNVERIFIED |
| SSSouthbridge Sheet Metal | Southbridge | MA | — | ◇ UNVERIFIED |
| SMSoutheastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SSSoutheastern Stud & Components, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| STSoutheastern Tool & Die | Aberdeen | NC | — | ◇ UNVERIFIED |
| SISparkman Industries Plant 2 | Victoria | TX | — | ◇ UNVERIFIED |
| SSSpeciality Stairs and Miscellaneous Fabrication INC | Pearl | MS | — | ◇ UNVERIFIED |
| SESpecialty Engine Components LLC | Taylor | MI | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ UNVERIFIED |
| SSSpecialty Steel Services Facility | Philadelphia | PA | — | ◇ UNVERIFIED |
| STSpecialty Tank & Equip CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| SSSportsman Steel Safes | Long Beach | CA | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC | Delavan | WI | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC - Millstead Way | Rochester | NY | — | ◇ UNVERIFIED |
| SAStadco Automatics (0829060007) | Fairborn | OH | — | ◇ UNVERIFIED |
 Standard Machine Works INC | Houston | TX | — | ◇ UNVERIFIED |
| STStandard Technologies & Machine CO | Wilmington | DE | — | ◇ UNVERIFIED |
| SIStandex International Spincraft Division | Billerica | MA | — | ◇ UNVERIFIED |
| SBStandley Batch Systems INC | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| SIStanley Industries INC | Warrensville Hts | OH | — | ◇ UNVERIFIED |
| SKStanley Knight CORP. | Three Oaks | MI | — | ◇ UNVERIFIED |
| SMStanwade Metal Products | Fowler | OH | — | ◇ UNVERIFIED |
| SCSteel City CORP | Youngstown | OH | — | ◇ UNVERIFIED |
| SFSteel Fab | Abingdon | VA | — | ◇ UNVERIFIED |
| SWSteel Warehouse of Ohio | Warren | OH | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SBSterling Boiler & Mechanical LLC | Evansville | IN | — | ◇ UNVERIFIED |
| SCSterling Custom Sheet Metal | Magnolia | TX | — | ◇ UNVERIFIED |
| SMStevken Manufacturing | Billerica | MA | — | ◇ UNVERIFIED |
| SLSt. Louis Metallizing Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SCStructural Composites Ind | Pomona | CA | — | ◇ UNVERIFIED |
| SPSulzer Pumps | Portland | OR | — | ◇ UNVERIFIED |
| SPSulzer Pump Services (us) INC. | Mobile | AL | — | ◇ UNVERIFIED |
| SFSuperior Fabrication & Welding LLC | Punta Gorda | FL | — | ◇ UNVERIFIED |
| SMSuperior Machine & Pattern, INC. | Talladega | AL | — | ◇ UNVERIFIED |
| SUSwissturn USA INC | Oxford | MA | — | ◇ UNVERIFIED |
| SMSynchronous Manufacturing INC | Michigan Center | MI | — | ◇ UNVERIFIED |
| TCTank Components Industries | Springfield | MO | — | ◇ UNVERIFIED |
| TCTankcraft CORP | Walworth | WI | — | ◇ UNVERIFIED |
| TPTank Partners | Seguin | TX | — | ◇ UNVERIFIED |
| TSTank Solutions Inc/smock Plt | Smock | PA | — | ◇ UNVERIFIED |
| TSTarlton Supply | Brenham | TX | — | ◇ UNVERIFIED |
| TMTaylor Machine Products | Taylor | MI | — | ◇ UNVERIFIED |
| TATaylor-wharton America | Baytown | TX | — | ◇ UNVERIFIED |
| TMTeale Machine CO INC | Rochester | NY | — | ◇ UNVERIFIED |
| TITeam Industrial Services INC. | Mobile | AL | — | ◇ UNVERIFIED |
| TGTechnetics Group Daytona | Daytona Beach | FL | — | ◇ UNVERIFIED |
| TSTechno Steel LLC | Darlington | SC | — | ◇ UNVERIFIED |
| TITecomet INC | Kenosha | WI | — | ◇ UNVERIFIED |
| TGTed Grob Corporation | Grafton | WI | — | ◇ UNVERIFIED |
| TTek-am | Springfield | VA | — | ◇ UNVERIFIED |
| TSTell Steel | Long Beach | CA | — | ◇ UNVERIFIED |
| TETempco Engineering INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| TITenere INC Wheat Ridge Div.cn | Wheat Ridge | CO | — | ◇ UNVERIFIED |
| TATennessee Awning Mfg CO | Hendersonville | TN | — | ◇ UNVERIFIED |
| TDTennessee Dept. of Trans. (closed) | Nashville | TN | — | ◇ UNVERIFIED |
| TSTennessee Screw Machine CO. INC | Mcminnville | TN | — | ◇ UNVERIFIED |
| TAThe Airolite Company | Marietta | OH | — | ◇ UNVERIFIED |
| TIThe Iron Shop | Venice | FL | — | ◇ UNVERIFIED |
 Thermal Equipment CORP | Compton | CA | — | ◇ UNVERIFIED |
| TRThe Roberts Company | Winterville | NC | — | ◇ UNVERIFIED |
| TRThe Rolling Stock Company | Sarasota | FL | — | ◇ UNVERIFIED |
| TSThe Sterling Blower CO INC | Forest | VA | — | ◇ UNVERIFIED |
| TTThe Troxel Company | Moscow | TN | — | ◇ UNVERIFIED |
| TVThe Vollrath Co., LLC | Newport | MN | — | ◇ UNVERIFIED |
| TFThompson Fabricating, LLC | Tarrant | AL | — | ◇ UNVERIFIED |
| TPThreaded Products INC | Davenport | IA | — | ◇ UNVERIFIED |
| TCTimkensteel CORP | Houston | TX | — | ◇ UNVERIFIED |
| TMTimmerman Mfg., INC. | Conover | NC | — | ◇ UNVERIFIED |
| TSTinco Sheet Metal INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| TMTomsicek Manufacturing CO | Ithaca | NE | — | ◇ UNVERIFIED |
| TITotal Industries | South Bend | IN | — | ◇ UNVERIFIED |
| TBToufayan Bakery INC | Ridgefield | NJ | — | ◇ UNVERIFIED |
| TTTowne Technologies INC | Somerville | NJ | — | ◇ UNVERIFIED |
| TMTramont Manufacturing LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| TTTregets Tool & Engineering | Jackson | MI | — | ◇ UNVERIFIED |
| TTTrend Technologies LLC | Chino | CA | — | ◇ UNVERIFIED |
| TBTriangle Brass Manufacturing CO INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| TMTriangle Machine Products CO | Cleveland | OH | — | ◇ UNVERIFIED |
| TATri Angle Metal Fab | Milton | VT | — | ◇ UNVERIFIED |
| TMTrident Machine Technologies, INC. | Hammond | IN | — | ◇ UNVERIFIED |
| TMTri-matics Mfg | Harrison Township | MI | — | ◇ UNVERIFIED |
| TFTri-metal Fabrication INC | Plainview | NY | — | ◇ UNVERIFIED |
| TRTri-state Roofing & Sheet Metal | Davisville | WV | — | ◇ UNVERIFIED |
| TCTriumph CORP | Tempe | AZ | — | ◇ UNVERIFIED |
| TFTriumph Fabrications - San Diego | El Cajon | CA | — | ◇ UNVERIFIED |
| TLTru Line Metal Products | Livonia | MI | — | ◇ UNVERIFIED |
| TITrutec Industries, INC. (0511010106) | Urbana | OH | — | ◇ UNVERIFIED |
| TFTst Fab & Machine, LLC | Chesapeake | VA | — | ◇ UNVERIFIED |
| UTUnion Tank Car Company | East Chicago | IN | — | ◇ UNVERIFIED |
| UIUnison Industries LLC Plant 2 | Dayton | OH | — | ◇ UNVERIFIED |
| UFUnited Fabrication | Salt Lake City | UT | — | ◇ UNVERIFIED |
