| SMSouthwark Metal Manufacturing Company | Powdersville | SC | — | ◇ UNVERIFIED |
| SVSouthwest Valve, INC. | Gonzales | LA | — | ◇ UNVERIFIED |
| SSovema | Saint Louis | MO | — | ◇ UNVERIFIED |
| SSpacesonic | San Carlos | CA | — | ◇ UNVERIFIED |
| SISpan-o-matic INC | Brea | CA | — | ◇ UNVERIFIED |
| SESpantex Expanded Metal, INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| SPSpa Pipe & Supply, L.p. | Abilene | TX | — | ◇ UNVERIFIED |
| SISpecial Iron Security Systems INC | South El Monte | CA | — | ◇ UNVERIFIED |
| SSSpeciality Stairs and Miscellaneous Fabrication INC | Pearl | MS | — | ◇ UNVERIFIED |
| SMSpecial Metal Works | Rayne | LA | — | ◇ UNVERIFIED |
| SSSpecial Service Products, INC. | Carrollton | GA | — | ◇ UNVERIFIED |
| SBSpecialty Building Components | Pico Rivera | CA | — | ◇ UNVERIFIED |
| SDSpecialty Design & Manufacturing, INC. | Reading | PA | — | ◇ UNVERIFIED |
| SESpecialty Engine Components LLC | Taylor | MI | — | ◇ UNVERIFIED |
| SESpecialty Engine Components LLC | Chelsea | MI | — | ◇ UNVERIFIED |
| SFSpecialty Fabrication, INC. | Wichita | KS | — | ◇ UNVERIFIED |
| SFSpecialty Fabrication & Powder Coatingllc | Oil City | PA | — | ◇ UNVERIFIED |
| SFSpecialty Fabricators INC. | York | PA | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ UNVERIFIED |
| SLSpecialty Laminates USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SLSpecialty Laminate USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SMSpecialty Metal Fabricators | Caledonia | MI | — | ◇ UNVERIFIED |
| SMSpecialty Metal Fabricators LLC | Portland | OR | — | ◇ UNVERIFIED |
| SSSpecialty Steel Services Facility | Philadelphia | PA | — | ◇ UNVERIFIED |
| SSSpecialty Steel Solutions | Kenton | OH | — | ◇ UNVERIFIED |
| SSSpecialty Systems | Bloomington | MN | — | ◇ UNVERIFIED |
| STSpecialty Tank & Equip CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| STSpecialty Tooling & Design, LLC | Margate | FL | — | ◇ UNVERIFIED |
| SISpectralytics INC | Dassel | MN | — | ◇ UNVERIFIED |
| SPSpectrum Prototype INC | Hillsboro | OR | — | ◇ UNVERIFIED |
| SRSpectrum Resources LLC | Suwanee | GA | — | ◇ UNVERIFIED |
| SMSpeed Machine CORP. | Cutler Bay | FL | — | ◇ UNVERIFIED |
| SMSpeed Machine Inc. | Bridgeview | IL | — | ◇ UNVERIFIED |
| SLSpg Laser Light Technologies LLC | Hermann | MO | — | ◇ UNVERIFIED |
| SCSpider Company INC | Machesney Park | IL | — | ◇ UNVERIFIED |
| SSSpider Staging CORP | Seattle | WA | — | ◇ UNVERIFIED |
| SISpidertrax, Inc. | Loveland | CO | — | ◇ UNVERIFIED |
| SISpig Industries | Bristol | VA | — | ◇ UNVERIFIED |
| SWSpindle Works Precision LLC | Campbell | NY | — | ◇ UNVERIFIED |
| SISpinnaker Industries International, INC. | Louisville | KY | — | ◇ UNVERIFIED |
| SMSpiral Manufacturing CO INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| SSSpiral Stairs of America, LLC | Erie | PA | — | ◇ UNVERIFIED |
| SRSpirit Racing LLC | Tunkhannock | PA | — | ◇ UNVERIFIED |
| SHSpl Holdings, LLC | Delran | NJ | — | ◇ UNVERIFIED |
| SMSP Machining Company | Titusville | FL | — | ◇ UNVERIFIED |
| SSSportsman Steel Safes | Long Beach | CA | — | ◇ UNVERIFIED |
| SMSpreng Machine CO. INC. | Saxonburg | PA | — | ◇ UNVERIFIED |
| SSSprial Systems, INC. | Nesbit | MS | — | ◇ UNVERIFIED |
| SASpring Air Products International, INC | West Melbourne | FL | — | ◇ UNVERIFIED |
| SCSpring Creek Golf & Country Club | Ripon | CA | — | ◇ UNVERIFIED |
| SMSpringdale Machine & Gear, Inc. | Holyoke | MA | — | ◇ UNVERIFIED |
| SSSps Spindle Parts and Service LLC | Goffstown | NH | — | ◇ UNVERIFIED |
| SPSpurling Property Management, LLC | Springfield | MI | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC | Delavan | WI | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC - Millstead Way | Rochester | NY | — | ◇ UNVERIFIED |
| SOSquare One Engineering LLC | Tallmadge | OH | — | ◇ UNVERIFIED |
| SISquires Industries, Inc. | Wixom | MI | — | ◇ UNVERIFIED |
| SRS & R Architectural Metals INC | Anaheim | CA | — | ◇ UNVERIFIED |
| SIS.R. Iron, Inc. | Windsor | CA | — | ◇ UNVERIFIED |
| SRS R Machining-Properties, LLC | Norco | CA | — | ◇ UNVERIFIED |
| SFSrs Fabrication, INC. | North Las Vegas | NV | — | ◇ UNVERIFIED |
| SSS - S Engineering INC Dba Specialty Tool - Engr | Eden Prairie | MN | — | ◇ UNVERIFIED |
| SIS.s. Industries | Collegeville | PA | — | ◇ UNVERIFIED |
| SISs Industries Llc, Dba Salter Spiral Stair | Collegeville | PA | — | ◇ UNVERIFIED |
| SSS & S Machine and Design | Akron | OH | — | ◇ UNVERIFIED |
| SSS & S Machining & Fabrication, INC | Groesbeck | TX | — | ◇ UNVERIFIED |
| SISsp International, INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| STS-square Tube Products, INC. | Commerce City | CO | — | ◇ UNVERIFIED |
| SSS & S Tool Inc | Conneaut | OH | — | ◇ UNVERIFIED |
| SMStaco Manufacturing Dba Staco Decorative Iron | Hattiesburg | MS | — | ◇ UNVERIFIED |
| SAStadco Automatics (0829060007) | Fairborn | OH | — | ◇ UNVERIFIED |
| SSStadco Standard Tool & Die CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| SDStaerk Design LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| SLStage Left Fabrication, LLC | Emerson | GA | — | ◇ UNVERIFIED |
| SMStagg Machine Prod INC | Cadillac | MI | — | ◇ UNVERIFIED |
| SCStaging Concepts INC | Brooklyn Park | MN | — | ◇ UNVERIFIED |
| SCStaging Concepts INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| SAStainless Aesthetics Inc. | Paradise | CA | — | ◇ UNVERIFIED |
| SCStainless Cable & Railing, Inc | Washougal | WA | — | ◇ UNVERIFIED |
| SMStainless Manufacturing and Design, INC. | Brandon | WI | — | ◇ UNVERIFIED |
| SAStairs and Rails INC. | Melrose Park | IL | — | ◇ UNVERIFIED |
| SFStamped Fittings, INC. | Elmira Heights | NY | — | ◇ UNVERIFIED |
| SIStamptech INC | Lynchburg | VA | — | ◇ UNVERIFIED |
| SIStamptech INC | Chester | VA | — | ◇ UNVERIFIED |
| SIStamptech, INC. | Chester | VA | — | ◇ UNVERIFIED |
| SAStandard Armament INC | Glendale | CA | — | ◇ UNVERIFIED |
| SEStandard Elements, LLC | Carbondale | CO | — | ◇ UNVERIFIED |
| SIStandard Iron, INC. | Chattanooga | TN | — | ◇ UNVERIFIED |
| SIStandard Iron - Wire Works INC | Sauk Centre | MN | — | ◇ UNVERIFIED |
| SIStandard Iron & Wire Works INC - Alex | Alexandria | MN | — | ◇ UNVERIFIED |
 Standard Machine CO | Minneapolis | MN | — | ◇ UNVERIFIED |
| Standard Machine & Tool, INC. | Bristol | CT | — | ◇ UNVERIFIED |
| Standard Machine Works INC | Houston | TX | — | ◇ UNVERIFIED |
| SPStandard Precision Grinding CO. | Lansing | IL | — | ◇ UNVERIFIED |
| SSStandard Sculpture LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| STStandard Technologies & Machine CO | Wilmington | DE | — | ◇ UNVERIFIED |
| SIStandex International Spincraft Division | Billerica | MA | — | ◇ UNVERIFIED |
| SIStanton Industrial LLC | Saint George | UT | — | ◇ UNVERIFIED |
| SRStanton Racing, INC. | Nicholasville | KY | — | ◇ UNVERIFIED |
| SMStanwade Metal Products | Fowler | OH | — | ◇ UNVERIFIED |
