| STSpecialized Turning, INC. | Peabody | MA | — | ◇ UNVERIFIED |
| SSSpecial Service Products, INC. | Carrollton | GA | — | ◇ UNVERIFIED |
| SASpecialty Applications | Ponchatoula | LA | — | ◇ UNVERIFIED |
| SDSpecialty Design & Manufacturing, INC. | Reading | PA | — | ◇ UNVERIFIED |
| SESpecialty Engineering Tool & Die, LLC | Huntington | IN | — | ◇ UNVERIFIED |
| SFSpecialty Foundry | Brockton | MA | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ UNVERIFIED |
| SLSpecialty Laminates USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SLSpecialty Laminate USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SMSpecialty Machine and CNC Inc. | Battle Ground | IN | — | ◇ UNVERIFIED |
| SPSpecialty Performance LLC | Dahlonega | GA | — | ◇ UNVERIFIED |
| SSSpecialty Steel Solutions | Kenton | OH | — | ◇ UNVERIFIED |
| SSSpecialty Support Systems, INC. | Levittown | PA | — | ◇ UNVERIFIED |
| STSpecialty Tooling & Design, LLC | Margate | FL | — | ◇ UNVERIFIED |
| SSSpecific Systems, LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| SFSpecified Fittings INC | Bellingham | WA | — | ◇ UNVERIFIED |
| SISpectralytics INC | Dassel | MN | — | ◇ UNVERIFIED |
| SPSpectrum Prototype INC | Hillsboro | OR | — | ◇ UNVERIFIED |
| STSpede Tool Mfg CO -yucca Rd | Adelanto | CA | — | ◇ UNVERIFIED |
| SMSpeed Machine CORP. | Cutler Bay | FL | — | ◇ UNVERIFIED |
| SMSpeed Machine Inc. | Bridgeview | IL | — | ◇ UNVERIFIED |
| SISpidertrax, Inc. | Loveland | CO | — | ◇ UNVERIFIED |
| SBSpike Brewing, LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SMSpill-stop Mfg. LLC | Melrose Park | IL | — | ◇ UNVERIFIED |
| SWSpindle Works Precision LLC | Campbell | NY | — | ◇ UNVERIFIED |
| SVSpintech Ventures, LLC | Xenia | OH | — | ◇ UNVERIFIED |
| SRSpirit Racing LLC | Tunkhannock | PA | — | ◇ UNVERIFIED |
| SFSpitz Foundry INC | Hastings | NE | — | ◇ UNVERIFIED |
| SMSP Machining Company | Titusville | FL | — | ◇ UNVERIFIED |
| SSSportsman Steel Safe Company | Long Beach | CA | — | ◇ UNVERIFIED |
| STSportsman Trailers | Santa Fe | TX | — | ◇ UNVERIFIED |
| SLSportswire LLC | Langley | OK | — | ◇ UNVERIFIED |
 Sportworks Global LLC | Mukilteo | WA | — | ◇ UNVERIFIED |
| SSSpraying System CO | Wheaton | IL | — | ◇ UNVERIFIED |
| SKSpray King Mfg INC | Fresno | CA | — | ◇ UNVERIFIED |
| SMSpreng Machine CO. INC. | Saxonburg | PA | — | ◇ UNVERIFIED |
| SASpring Air Products International, INC | West Melbourne | FL | — | ◇ UNVERIFIED |
| SCSpring City Elec/spring City | Spring City | PA | — | ◇ UNVERIFIED |
| SCSpring Creek Golf & Country Club | Ripon | CA | — | ◇ UNVERIFIED |
| SMSpringdale Machine & Gear, Inc. | Holyoke | MA | — | ◇ UNVERIFIED |
| SISpringfield Iron Works INC | Chicopee | MA | — | ◇ UNVERIFIED |
| SWSpringfield Welding & Mfg CO INC | Waunakee | WI | — | ◇ UNVERIFIED |
| SMSpring Metal Recycling,llc | Atlanta | GA | — | ◇ UNVERIFIED |
 Springs Fabrication - Waynoka | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SSSps Spindle Parts and Service LLC | Goffstown | NH | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC - Millstead Way | Rochester | NY | — | ◇ UNVERIFIED |
| SQS. Q. Fabrication, INC. | Andalusia | AL | — | ◇ UNVERIFIED |
| SLSquare10Source, LLC | Plant City | FL | — | ◇ UNVERIFIED |
| SOSquare One Engineering LLC | Tallmadge | OH | — | ◇ UNVERIFIED |
| SRS R Machining-Properties, LLC | Norco | CA | — | ◇ UNVERIFIED |
| SMSrp Manufacturing | Pleasant Grove | UT | — | ◇ UNVERIFIED |
| SASsc & Aluminum Fabrications INC | West Palm Beach | FL | — | ◇ UNVERIFIED |
| SCS.S. Connections, LLC | Denver | CO | — | ◇ UNVERIFIED |
| SSS - S Engineering INC Dba Specialty Tool - Engr | Eden Prairie | MN | — | ◇ UNVERIFIED |
| SFS&s Fabrication LLC | Cleveland | TX | — | ◇ UNVERIFIED |
| SFS&S Fire Pits | College Park | GA | — | ◇ UNVERIFIED |
| SCSsi Corporation | Julesburg | CO | — | ◇ UNVERIFIED |
| SSS & S Machine and Design | Akron | OH | — | ◇ UNVERIFIED |
| SSS & S Machining & Fabrication, INC | Groesbeck | TX | — | ◇ UNVERIFIED |
| SISsp International, INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| SCSst Custom Fabricators | Okeechobee | FL | — | ◇ UNVERIFIED |
| SFSst Foundry | Loveland | OH | — | ◇ UNVERIFIED |
| SSS & S Tool Inc | Conneaut | OH | — | ◇ UNVERIFIED |
| SPStack-on Products | Wauconda | IL | — | ◇ UNVERIFIED |
| SSStadco Standard Tool & Die CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| SMStadler Mold & Die CO. INC. | Denver | CO | — | ◇ UNVERIFIED |
| SDStaerk Design LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| SHStage House | Las Vegas | NV | — | ◇ UNVERIFIED |
| SAStainless Aesthetics Inc. | Paradise | CA | — | ◇ UNVERIFIED |
| SAStainless and Repair, INC. | Marshfield | WI | — | ◇ UNVERIFIED |
| SCStainless Concepts, LLC | Zeeland | MI | — | ◇ UNVERIFIED |
| SMStainless Manufacturing and Design, INC. | Brandon | WI | — | ◇ UNVERIFIED |
| SSStainless Steel Custom Fabricators | Houston | TX | — | ◇ UNVERIFIED |
| SSStainless Steel Fabricators INC. | La Mirada | CA | — | ◇ UNVERIFIED |
| SSStainless Steel Technologies and Pressure Vessels | Saint Paul | MN | — | ◇ UNVERIFIED |
| SUStainless Unlimited, INC. | Omro | WI | — | ◇ UNVERIFIED |
| SMStambaugh Metal Inc/hanover | Hanover | PA | — | ◇ UNVERIFIED |
| SIStandard Iron, INC. | Chattanooga | TN | — | ◇ UNVERIFIED |
| SIStandard Iron, INC. | Grand Island | NE | — | ◇ UNVERIFIED |
| SIStandard Iron & Wire Works | Thomson | GA | — | ◇ 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 Sheet Metal CORP. | Norfolk | VA | — | ◇ UNVERIFIED |
| STStandard Technologies & Machine CO | Wilmington | DE | — | ◇ UNVERIFIED |
| SIStandex International Spincraft Division | Billerica | MA | — | ◇ UNVERIFIED |
| SLStanford Linear Accelerator Center | Stanford | CA | — | ◇ UNVERIFIED |
 Stang Industries INC | Corona | CA | — | ◇ UNVERIFIED |
| SIStanton Industrial LLC | Saint George | UT | — | ◇ UNVERIFIED |
| SRStanton Racing, INC. | Nicholasville | KY | — | ◇ UNVERIFIED |
| SMStark's Metal Works Inc. | Menomonie | WI | — | ◇ UNVERIFIED |
| SLStar Lake Fabrication | Litchfield | MN | — | ◇ UNVERIFIED |
| SMStar Machine | Tulsa | OK | — | ◇ UNVERIFIED |
| SMStar Machine Co. Inc. | Nashua | NH | — | ◇ UNVERIFIED |
| SMStar Manufacturing INC | Blaine | MN | — | ◇ UNVERIFIED |
| SPStar Precision Manufacturing, Inc. | Frederick | CO | — | ◇ UNVERIFIED |
| SLStarting Line Products, INC. | Idaho Falls | ID | — | ◇ UNVERIFIED |
| SIState Industries INC | Franklin | TN | — | ◇ UNVERIFIED |
| SLState Line Foundries INC | Roscoe | IL | — | ◇ UNVERIFIED |
