| SMStone Manufacturing Company | Gardena | CA | — | ◇ UNVERIFIED |
| SMStone Manufacturing Custom Handmade Fireplace Accessories LLC | Buffalo Grove | IL | — | ◇ UNVERIFIED |
| SVStone Valley Welding - Mcalevys Fort Mfg | Huntingdon | PA | — | ◇ UNVERIFIED |
| SPStorage Products Group | Aurora | CO | — | ◇ UNVERIFIED |
| SMStorch Magnetics | Livonia | MI | — | ◇ UNVERIFIED |
| SIStoutco, INC. | Bristol | IN | — | ◇ UNVERIFIED |
| SPSt. Paul Corrugating CO. | Minneapolis | MN | — | ◇ UNVERIFIED |
| SPSt. Paul's Manor | San Diego | CA | — | ◇ UNVERIFIED |
| SPStraightline Performance Products INC | Forest Lake | MN | — | ◇ UNVERIFIED |
| SIStraitline, INC. | Okarche | OK | — | ◇ UNVERIFIED |
| SMStrand Manufacturing Company INC | Hopkins | MN | — | ◇ UNVERIFIED |
| SMStrathmore Machinery INC | Strathmore | CA | — | ◇ UNVERIFIED |
 Streamline Tool & Engineering LLC | Grain Valley | MO | — | ◇ UNVERIFIED |
| SFStreet Factory Media | Bloomington | MN | — | ◇ UNVERIFIED |
| SIStreetscape INC | Huntington Beach | CA | — | ◇ UNVERIFIED |
| SRSt Regis Manufacturing LLC Trading /rs Owens | Itasca | IL | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Portland | OR | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Corvallis | OR | — | ◇ UNVERIFIED |
| SSStretch Solutions LLC | Riverside | CA | — | ◇ UNVERIFIED |
| SAStrickland Agriculture Services Incorporated | Spring Hope | NC | — | ◇ UNVERIFIED |
| SOStripmasters of Illinois | Granite City | IL | — | ◇ UNVERIFIED |
| SBStrong Built, INC | Waterproof | LA | — | ◇ UNVERIFIED |
| STStroud's Texas Sheetmetal, LLC | Lubbock | TX | — | ◇ UNVERIFIED |
| SMSTS Machine Incorporated | Tomball | TX | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal INC. | Austin | TX | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal, INC. | Leander | TX | — | ◇ UNVERIFIED |
| SDStull Design and Manufactruring LLC | Burlington | KY | — | ◇ UNVERIFIED |
| SLSturdy Lantern Manufacturing | Franklin | MA | — | ◇ UNVERIFIED |
| SBSudbury Brass Goods Company Incorporated | Malden | MA | — | ◇ UNVERIFIED |
| SBSudbury Brass Goods Company Incorporated | Chelsea | MA | — | ◇ UNVERIFIED |
| SSSudholt Sheet Metal, INC. | Aviston | IL | — | ◇ UNVERIFIED |
| SCSufrank Corporation | Lawton | OK | — | ◇ UNVERIFIED |
| SISulvan Industrial Piping | Perth Amboy | NJ | — | ◇ UNVERIFIED |
| SCSulzer Chemtech | Tulsa | OK | — | ◇ UNVERIFIED |
| SCSummit Careers INC | East Longmeadow | MA | — | ◇ UNVERIFIED |
| SISummit INC | Portland | OR | — | ◇ UNVERIFIED |
| SSSummit Sheet Metal LLC | Kingston | PA | — | ◇ UNVERIFIED |
| SSSummit Sheet Metal LLC | Kingston | PA | — | ◇ UNVERIFIED |
| SSSummit Sheet Metal, LLC | Pittston | PA | — | ◇ UNVERIFIED |
| SASun Architectural Products, LLC | Cumming | GA | — | ◇ UNVERIFIED |
| SMSuncoast Metal LLC | Sarasota | FL | — | ◇ UNVERIFIED |
| SASundrella Aluminum Products CO. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SMSunlast Metal, INC. | Palm City | FL | — | ◇ UNVERIFIED |
| SMSun Metal - Doral Enterprises | Albuquerque | NM | — | ◇ UNVERIFIED |
| SWSunshine Welding, Scallop | Port Canaveral | FL | — | ◇ UNVERIFIED |
| SVSun Valley Bronze, Inc. | Bellevue | ID | — | ◇ UNVERIFIED |
| SCSuperior Canopy Corporation | Finley | KY | — | ◇ UNVERIFIED |
| SCSuperior Contracting New Facility | Salina | KS | — | ◇ UNVERIFIED |
| SDSuperior Derrick Services LLC | New Iberia | LA | — | ◇ UNVERIFIED |
| SDSuperior Duct Fabrication, Inc. | Las Vegas | NV | — | ◇ UNVERIFIED |
| SESuperior Equipment & Service LLC | Sheridan | WY | — | ◇ UNVERIFIED |
| SFSuperior Fabrication Inc | Punta Gorda | FL | — | ◇ UNVERIFIED |
| SFSuperior Fabrication & Welding LLC | Punta Gorda | FL | — | ◇ UNVERIFIED |
| SFSuperior Fabricators INC | Baldwin | LA | — | ◇ UNVERIFIED |
| SGSuperior Grinding and Sales, INC. | Claremore | OK | — | ◇ UNVERIFIED |
| SISuperior Iron INC | Otsego | MN | — | ◇ UNVERIFIED |
| SMSuperior Metals, Inc. | San Jose | CA | — | ◇ UNVERIFIED |
| SMSuperior Metalworks, INC. | Carlisle | PA | — | ◇ UNVERIFIED |
| SSSuperior Sheet Metal Company, INC. | Kansas City | KS | — | ◇ UNVERIFIED |
| SSSuperior Sheet Metal, LLC | Hudson | NH | — | ◇ UNVERIFIED |
 Superior Steel Products | Kinzers | PA | — | ◇ UNVERIFIED |
| SSSupervoid Systems, LLC | Prattville | AL | — | ◇ UNVERIFIED |
| SRSupreme Roofing Products, INC. | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| SSSupreme Service & Specialty CO INC Thru Tubing Div | Broussard | LA | — | ◇ UNVERIFIED |
| SISurcore INC | Denver | CO | — | ◇ UNVERIFIED |
| SBSutter Buttes Ag Distribution | Olivehurst | CA | — | ◇ UNVERIFIED |
| SPSutter P. Dahlglen Enterprises INC. | Santa Clara | CA | — | ◇ UNVERIFIED |
| SHSutton Holdings LLC | Bronson | MI | — | ◇ UNVERIFIED |
| SISuwannee Iron Works & Fence, INC. | O Brien | FL | — | ◇ UNVERIFIED |
| SVS & V Fabrications INC | Camden | TN | — | ◇ UNVERIFIED |
| SRSvm - Reno | Sparks | NV | — | ◇ UNVERIFIED |
| SLSwanky LLC | Melba | ID | — | ◇ UNVERIFIED |
| SLSwedge, LLC | Portland | OR | — | ◇ UNVERIFIED |
| SASwift-cor Aerospace, INC. | Gardena | CA | — | ◇ UNVERIFIED |
| SHSwisher Heating & Air Conditioning, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SMS&w Metal Products INC | Gilbertsville | PA | — | ◇ UNVERIFIED |
| SPSycamore Precision Machine INC | Genoa | IL | — | ◇ UNVERIFIED |
| SMSyer Metal Works LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| SPSyitz Properties, LLC | Green Bay | WI | — | ◇ UNVERIFIED |
| SMSyltone Marine INC | Gulfport | MS | — | ◇ UNVERIFIED |
| SCSymons CORP | Des Plaines | IL | — | ◇ UNVERIFIED |
| SMSynventive Molding Solutions | Peabody | MA | — | ◇ UNVERIFIED |
| SISystems in Advanced Mechanical | Crofton | MD | — | ◇ UNVERIFIED |
| SISystems, INC. | Germantown | WI | — | ◇ UNVERIFIED |
| SSzaboworks | San Francisco | CA | — | ◇ UNVERIFIED |
| TDT43 Designs | Hohenwald | TN | — | ◇ UNVERIFIED |
| TMTabaro's Metal Works | Bayamon | PR | — | ◇ UNVERIFIED |
| TMTabla Mechanical LLC | Kapolei | HI | — | ◇ UNVERIFIED |
| TOTAC Operating Company | Draper | UT | — | ◇ UNVERIFIED |
| TWTac Welding INC | Bend | OR | — | ◇ UNVERIFIED |
| TGTait Global LLC | Lititz | PA | — | ◇ UNVERIFIED |
| TMTalley Metal Fabrication | San Jacinto | CA | — | ◇ UNVERIFIED |
| TLTallman Ladders INC | Hood River | OR | — | ◇ UNVERIFIED |
| TMTambe Metal Products INC | Victor | NY | — | ◇ UNVERIFIED |
| TSTampa Sheet Metal Company | Tampa | FL | — | ◇ UNVERIFIED |
| TCT & C PATTERSON PROPERTIES, LLC | Georgetown | IN | — | ◇ UNVERIFIED |
| TST & S Manufacturing, LLC | Rochester | MN | — | ◇ UNVERIFIED |
| TITandem Inductries LLC | Boulder City | NV | — | ◇ UNVERIFIED |
| TITandem Industries, LLC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| TWTandum Way Properties LLC | Norco | CA | — | ◇ UNVERIFIED |
