| SPSunset Precision Concepts INC | Beaverton | OR | — | ◇ UNVERIFIED |
| SMSunshine Metals | Corona | CA | — | ◇ UNVERIFIED |
| SSSun Steel Company | University Park | IL | — | ◇ UNVERIFIED |
| SSunsteel,llc | Sunnyside | WA | — | ◇ UNVERIFIED |
| SSunvair | Valencia | CA | — | ◇ UNVERIFIED |
| SDSuper Duty, INC. | Hot Springs | AR | — | ◇ UNVERIFIED |
| SASuperior Architecture Mfg INC | Bell Gardens | CA | — | ◇ UNVERIFIED |
| SCSuperior Canopy Corporation | Finley | KY | — | ◇ UNVERIFIED |
| SDSuperior Drillpipe Manufacturing | Houston | TX | — | ◇ UNVERIFIED |
| SDSuperior Duct Fabrication, Inc. | Las Vegas | NV | — | ◇ UNVERIFIED |
| SESuperior Enterprises INC | Jackson | TN | — | ◇ UNVERIFIED |
| SFSuperior Fabrication Inc | Punta Gorda | FL | — | ◇ UNVERIFIED |
| SFSuperior Fabrication INC. | Canadian | TX | — | ◇ UNVERIFIED |
| SFSuperior Fabrication, INC | Elk City | OK | — | ◇ UNVERIFIED |
| SFSuperior Fabrication, INC. | Ada | OK | — | ◇ UNVERIFIED |
| SFSuperior Fabricators INC | Baldwin | LA | — | ◇ UNVERIFIED |
| SMSuperior Machine INC | White Bear Lake | MN | — | ◇ UNVERIFIED |
| SMSuperior Machine & Welding INC | Anchorage | AK | — | ◇ UNVERIFIED |
| SMSuperior Machine Works, LLC | Mobile | AL | — | ◇ UNVERIFIED |
| SMSuperior Machining INC | New Hudson | MI | — | ◇ UNVERIFIED |
| SMSuperior Machining LLC | Brea | CA | — | ◇ UNVERIFIED |
| SMSuperior Mason Products LLC | Homewood | AL | — | ◇ UNVERIFIED |
| SMSuperior Mason Products LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| SMSuperior Metals, Inc. | San Jose | CA | — | ◇ UNVERIFIED |
| SMSuperior Metalworks, INC. | Carlisle | PA | — | ◇ UNVERIFIED |
| SQSuperior Quality Machine | Garrettsville | OH | — | ◇ UNVERIFIED |
| SRSuperior Roll Forming CO. INC. | Valley City | OH | — | ◇ UNVERIFIED |
| SSSuperior Sheet Metal Company, INC. | Kansas City | KS | — | ◇ UNVERIFIED |
| SSSuperior Sheet Metal, LLC | Hudson | NH | — | ◇ UNVERIFIED |
| SSSuperior Steel Connectors Inc | Bay Shore | NY | — | ◇ UNVERIFIED |
| SSSuperior Steel Connectors Inc | Ronkonkoma | NY | — | ◇ UNVERIFIED |
| SSSuperior Suppliers Network, LLC | Houghton | MI | — | ◇ UNVERIFIED |
 Superior Tank CO INC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| STSuperior Tool, Inc. | North Tonawanda | NY | — | ◇ UNVERIFIED |
| STSuperior Tube Products, INC. | Davenport | IA | — | ◇ UNVERIFIED |
| SSSuper Steel LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SSSuper Steel Products CORP | Milwaukee | WI | — | ◇ UNVERIFIED |
| SMSupertech Machining INC | Chatsworth | CA | — | ◇ UNVERIFIED |
| SNSupply Network INC Dba Viking Supplynet & Fabrication Services | Santa Fe Spgs | CA | — | ◇ UNVERIFIED |
| SNSupply Network INC Dba Viking Supplynet & Fabrication Services | Hayward | CA | — | ◇ UNVERIFIED |
| SMSupreme Manufacutring, INC. | Stoneboro | PA | — | ◇ UNVERIFIED |
| SRSupreme Roofing Products, INC. | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| SPSupremo Products, LLC | Adamsburg | PA | — | ◇ UNVERIFIED |
| SUSurfaces Unlimited, INC. | Cary | NC | — | ◇ UNVERIFIED |
| SSurtec | Eveleth | MN | — | ◇ UNVERIFIED |
| SPSutter P. Dahlglen Enterprises INC. | Santa Clara | CA | — | ◇ UNVERIFIED |
| SRSvm - Reno | Sparks | NV | — | ◇ UNVERIFIED |
| SMSwartz Manufacturing, INC. | Elyria | OH | — | ◇ UNVERIFIED |
| SFSweatshop Fabrication | Robstown | TX | — | ◇ UNVERIFIED |
| SMSweetwater Machine and Welding INC. | Sweetwater | TX | — | ◇ UNVERIFIED |
| SSSwenson Steel Products Company, INC. | Ceres | CA | — | ◇ UNVERIFIED |
| SASwift-cor Aerospace, INC. | Gardena | CA | — | ◇ UNVERIFIED |
| SHSwisher Heating & Air Conditioning, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SISwissaero, INC. | Waterford | PA | — | ◇ UNVERIFIED |
| SPSwissline Precision Manufacturing, INC. | Cumberland | RI | — | ◇ UNVERIFIED |
| SMS&w Metal Products INC | Gilbertsville | PA | — | ◇ UNVERIFIED |
| SDSwope Design Solutions | San Francisco | CA | — | ◇ UNVERIFIED |
| SSSymons Steel Forms Div | New Braunfels | TX | — | ◇ UNVERIFIED |
| SISystems in Advanced Mechanical | Crofton | MD | — | ◇ UNVERIFIED |
| SSSystems South INC | Fountain Inn | SC | — | ◇ UNVERIFIED |
| TDT43 Designs | Hohenwald | TN | — | ◇ UNVERIFIED |
| TITab Index Inc | Raleigh | NC | — | ◇ UNVERIFIED |
| TITacoma Iron Work | Spanaway | WA | — | ◇ UNVERIFIED |
| TMTacoma Metals Site | Tacoma | WA | — | ◇ UNVERIFIED |
| TOTAC Operating Company | Draper | UT | — | ◇ UNVERIFIED |
| TMTag Manufacturing | Berlin | CT | — | ◇ UNVERIFIED |
| TTTag Team Manufacturing | Parker | CO | — | ◇ UNVERIFIED |
| TMTahoma Machining LTD | Medina | OH | — | ◇ UNVERIFIED |
| TITalco INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| TITalley Iron Works, LLC | Pearl River | LA | — | ◇ UNVERIFIED |
| TMTalley Metal Products | Hagerstown | MD | — | ◇ UNVERIFIED |
| TITallman Iron Works INC | Maryville | TN | — | ◇ UNVERIFIED |
| TCTal-mar Custom Metal Fabricators, INC. | Crestwood | IL | — | ◇ UNVERIFIED |
| TMTalton's Metal Products, INC. | Fuquay Varina | NC | — | ◇ UNVERIFIED |
| TMTambe Metal Products INC | Victor | NY | — | ◇ UNVERIFIED |
| TITamer Industries | Somerset | MA | — | ◇ UNVERIFIED |
| TITammcor Industries INC | Nicholasville | KY | — | ◇ UNVERIFIED |
| TATampa Amalgamated Steel | Tampa | FL | — | ◇ UNVERIFIED |
| TPTampa Pipe & Welding, INC. | Galveston | TX | — | ◇ UNVERIFIED |
| TSTampa Sheet Metal Company | Tampa | FL | — | ◇ UNVERIFIED |
| TMTancredi Machining, Inc | Topton | PA | — | ◇ UNVERIFIED |
| TMTandem Metals, INC. | University Park | IL | — | ◇ UNVERIFIED |
| TCTank Connection | Galesburg | KS | — | ◇ UNVERIFIED |
| TMTapemation Machining INC | Scotts Valley | CA | — | ◇ UNVERIFIED |
| TMTaprite-fassco Mfg., INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| TSTarget Sheetmetal and Manufacturing, INC. | Lubbock | TX | — | ◇ UNVERIFIED |
| TSTarrier Steel CO INC | Columbus | OH | — | ◇ UNVERIFIED |
| TMTartan Manufacturing, INC. | Kansas City | KS | — | ◇ UNVERIFIED |
| TSTassie Siding INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| TITate INC | Saint Paul | VA | — | ◇ UNVERIFIED |
| TITate, INC. | Pocahontas | AR | — | ◇ UNVERIFIED |
| TTTaurus Tool INC | Maple Grove | MN | — | ◇ UNVERIFIED |
| TFTaylor Forge Engineered Systems - Greeley | Garnett | KS | — | ◇ UNVERIFIED |
| TFTaylor Forge Engineered Systems INC | Greeley | KS | — | ◇ UNVERIFIED |
| TFTaylor Forge Engineered Systems - Paola | Paola | KS | — | ◇ UNVERIFIED |
| THTaylor Hydraulics INC. | Cedar Bluff | VA | — | ◇ UNVERIFIED |
 Taylor Machine Works Inc, Plant Number 3 | Louisville | MS | — | ◇ UNVERIFIED |
| TMTaylor Machining Solutions INC | Garfield | MN | — | ◇ UNVERIFIED |
| TMTaylor Made Coils | Man | WV | — | ◇ UNVERIFIED |
| TMTaylor Metal INC | Salem | OR | — | ◇ UNVERIFIED |
