| SISouthwest Industrial Rigging | Black Canyon City | AZ | — | ◇ UNVERIFIED |
| SCSouthwire Company | Carrollton | GA | — | ◇ UNVERIFIED |
| SISpanco, Incorporated | Morgantown | PA | — | ◇ UNVERIFIED |
| SESpaulding Equipment CO | Perris | CA | — | ◇ UNVERIFIED |
| SQSpectra Quest, Inc | Henrico | VA | — | ◇ UNVERIFIED |
| SPSpencer Products INC | North Brookfield | MA | — | ◇ UNVERIFIED |
| SKSpray King INC | Fresno | CA | — | ◇ UNVERIFIED |
| SOSrc of Lexington INC - Mercer Rd | Lexington | KY | — | ◇ UNVERIFIED |
| SISrdc INC | Sunol | CA | — | ◇ UNVERIFIED |
| SISr Injection Molding INC | Clinton Twp | MI | — | ◇ UNVERIFIED |
| SSStafford Specialty Wire Company | Worcester | MA | — | ◇ UNVERIFIED |
| STStafford Tower Cranes of America, LLC | Denver | CO | — | ◇ UNVERIFIED |
| SMStainless Metal Products | Chattanooga | TN | — | ◇ UNVERIFIED |
| SBStanley Black and Decker | East Greenwich | RI | — | ◇ UNVERIFIED |
| SBStanley Black and Decker - Greenfield Operations | Greenfield | IN | — | ◇ UNVERIFIED |
| SBStanley Black - Decker INC Dba Stanley Labounty- W | Two Harbors | MN | — | ◇ UNVERIFIED |
| SIStanley-bostitch INC Clinton Plant | Clinton | CT | — | ◇ UNVERIFIED |
| SCStar Crane & Hoist INC. | Trenton | MI | — | ◇ UNVERIFIED |
| SGStar Guide Corporation | Arvada | CO | — | ◇ UNVERIFIED |
| SSStateside Steel & Wire LLC | West Memphis | AR | — | ◇ UNVERIFIED |
| SCStavola Contracting CO INC | Tinton Falls | NJ | — | ◇ UNVERIFIED |
| SWStd Wire Products INC. | Huntington Beach | CA | — | ◇ UNVERIFIED |
| SIStelco Industries INC. | Waxahachie | TX | — | ◇ UNVERIFIED |
| SMStephens Manufacturing | Burkesville | KY | — | ◇ UNVERIFIED |
 Stephens Pipe & Steel LLC | Madison | TN | — | ◇ UNVERIFIED |
| Stephens Pipe & Steel, LLC | Greensboro | NC | — | ◇ UNVERIFIED |
| Stephens Pipe - Steel LLC | Webbs Cross Roads | KY | — | ◇ UNVERIFIED |
| SFSterling Filter and Metal Products, INC. | Moscow | PA | — | ◇ UNVERIFIED |
| SIStoneco INC Denniston Quarry | Monroe | MI | — | ◇ UNVERIFIED |
| SPStone Panels | Carrollton | TX | — | ◇ UNVERIFIED |
| SCStoody Company / Stoody Deloro Stellite INC | City of Industry | CA | — | ◇ UNVERIFIED |
| SSStraits Steel & Wire | Ludington | MI | — | ◇ UNVERIFIED |
| SRStuart Rush | Damascus | VA | — | ◇ UNVERIFIED |
| SFSummertree Fence Company, INC. | Shawnee | OK | — | ◇ UNVERIFIED |
| SSSun Superior Chipper Parts LLC | Darlington | SC | — | ◇ UNVERIFIED |
| SMSuperior Manufacturing Company | Winston Salem | NC | — | ◇ UNVERIFIED |
| SSSuperior Solutions Staffing Services, INC. | Mesquite | TX | — | ◇ UNVERIFIED |
| SSSuperior Supplies INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SMSuper Mix Concrete INC. | San Sebastian | PR | — | ◇ UNVERIFIED |
| SWSuper-temp Wire and Cable, INC. | Winooski | VT | — | ◇ UNVERIFIED |
| STSwing Trucking Portable Crushing & Screening Equipment | Washakie | WY | — | ◇ UNVERIFIED |
| SISyar Industries | Fairfield | CA | — | ◇ UNVERIFIED |
| SRSynergistic Research INC | Newport Beach | CA | — | ◇ UNVERIFIED |
| SESystem Enterprise Corporation | Wheatland | MO | — | ◇ UNVERIFIED |
| TITalbot Industries INC | Neosho | MO | — | ◇ UNVERIFIED |
| TLTara Labs INC | Ashland | OR | — | ◇ UNVERIFIED |
| TLTara Labs INC | Medford | OR | — | ◇ UNVERIFIED |
| TGTarget Graphics INC | Sarasota | FL | — | ◇ UNVERIFIED |
| TTTbc - the Boring Company | Adelanto | CA | — | ◇ UNVERIFIED |
| TATc American Crane Company | Waite Park | MN | — | ◇ UNVERIFIED |
