| SWSol Windows and Doors S Corp, Inc. | Bossier City | LA | — | ◇ UNVERIFIED |
| SSSouthbridge Sheet Metal | Southbridge | MA | — | ◇ UNVERIFIED |
| SCSouth County Sheet Metal & Specialties INC | La Pine | OR | — | ◇ UNVERIFIED |
| SCSoutheastern Canopies, INC | Locust Grove | GA | — | ◇ UNVERIFIED |
| SMSoutheastern Metal Products LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| SMSoutheastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SOSoutheastern Outdoor Products, Incorporated | Clinton | NC | — | ◇ UNVERIFIED |
| SSSoutheastern Stud & Components, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| STSoutheastern Tool & Die | Aberdeen | NC | — | ◇ UNVERIFIED |
| SCSouthern Crafted, LLC | Fountain Inn | SC | — | ◇ UNVERIFIED |
 Southern Fabricators, INC. | Polkton | NC | — | ◇ UNVERIFIED |
| SMSouthern Machinery CORP | Lakeland | FL | — | ◇ UNVERIFIED |
| SSSouthern Sheet Metal, INC. | Suffolk | VA | — | ◇ UNVERIFIED |
| SSSouthern Specialties CORP | Tulsa | OK | — | ◇ UNVERIFIED |
| SWSouthern Walls & Windows | New Orleans | LA | — | ◇ UNVERIFIED |
| SMSouthland Manufacturing INC | Douglasville | GA | — | ◇ UNVERIFIED |
| SSSouth Sound Screen & Mobile Home Supply | Roy | WA | — | ◇ UNVERIFIED |
| STSouth Texas Sheet Metal LLC | Houston | TX | — | ◇ UNVERIFIED |
| SMSouthwark Metal | Southaven | MS | — | ◇ UNVERIFIED |
| SMSouthwark Metal Manufacturing Company | Powdersville | SC | — | ◇ UNVERIFIED |
| SASouthwest Aluminum Systems INC | Chandler | AZ | — | ◇ UNVERIFIED |
 Southwest Mobile Storage INC | San Diego | CA | — | ◇ UNVERIFIED |
| SISpan-o-matic INC | Brea | CA | — | ◇ UNVERIFIED |
| SBSpecialty Building Products, INC. | Bossier City | LA | — | ◇ UNVERIFIED |
| SFSpecialty Fabrication, INC. | Wichita | KS | — | ◇ UNVERIFIED |
| SFSpecialty Fabrication & Powder Coatingllc | Oil City | PA | — | ◇ UNVERIFIED |
| SFSpecialty Fabricators INC. | York | PA | — | ◇ UNVERIFIED |
| SFSpecialty Frabricators and Erectors, INC. | Hammond | LA | — | ◇ UNVERIFIED |
| SMSpecialty Metal Fabricators LLC | Portland | OR | — | ◇ UNVERIFIED |
| SSSpecialty Shutter Systems LLC | Victoria | TX | — | ◇ UNVERIFIED |
| SSSpecialty Steel Services Facility | Philadelphia | PA | — | ◇ UNVERIFIED |
| SSSpecified Systems, INC. | Washington | PA | — | ◇ UNVERIFIED |
| SRSpectrum Resources LLC | Suwanee | GA | — | ◇ UNVERIFIED |
| SWSpeedy Windows Corporation | Brooklyn | NY | — | ◇ UNVERIFIED |
| SFSpeeler Foundations INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| SCSpider Company INC | Machesney Park | IL | — | ◇ UNVERIFIED |
| SSSpider Staging CORP | Seattle | WA | — | ◇ UNVERIFIED |
| SISpig Industries | Bristol | VA | — | ◇ UNVERIFIED |
| SISpinnaker Industries International, INC. | Louisville | KY | — | ◇ UNVERIFIED |
| SMSpiral Manufacturing CO INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| SHSpl Holdings, LLC | Delran | NJ | — | ◇ UNVERIFIED |
| SGSpring Glass and Mirror, LTD. | Spring | TX | — | ◇ UNVERIFIED |
| SFSrs Fabrication, INC. | North Las Vegas | NV | — | ◇ UNVERIFIED |
| SPS&s Powerlift Doors, LLC | Newton | KS | — | ◇ UNVERIFIED |
| SLStage Left Fabrication, LLC | Emerson | GA | — | ◇ UNVERIFIED |
| SCStaging Concepts INC | Brooklyn Park | MN | — | ◇ 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 - Wire Works INC | Sauk Centre | MN | — | ◇ UNVERIFIED |
| SIStandard Iron & Wire Works INC - Alex | Alexandria | MN | — | ◇ UNVERIFIED |
| SDStanley Doors Sys | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| SBStar Building (formerly Ceco Buildings) | Lockeford | CA | — | ◇ UNVERIFIED |
| SBStar Building Sys | Elizabethton | TN | — | ◇ UNVERIFIED |
| SCStarcco Company, INC. | Maryland Heights | MO | — | ◇ UNVERIFIED |
| SSStarflite Systems INC. | Connoquenessing | PA | — | ◇ UNVERIFIED |
| SSStarflite Systems INC. | Saxonburg | PA | — | ◇ UNVERIFIED |
| SSStar Storage Solutions LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| SSStar Storage Solutions LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| SCSt Cloud Window INC | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| SSStead Sheet Metal INC. | Aurora | IL | — | ◇ UNVERIFIED |
| SBSteel Building Components INC. | Edison | NJ | — | ◇ UNVERIFIED |
| SBSteel Buildings and Structures | Mount Airy | NC | — | ◇ UNVERIFIED |
| SCSteel Cell of North America INC. | Cornelia | GA | — | ◇ UNVERIFIED |
| SISteeldeck INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| SISteeler INC | Seattle | WA | — | ◇ UNVERIFIED |
| SMSteel & Metal Systems, INC. | Blackshear | GA | — | ◇ UNVERIFIED |
| SNSteel Nutz, Inc. | Murrieta | CA | — | ◇ UNVERIFIED |
| SSSteelox Systems, INC. | Washington Court House | OH | — | ◇ UNVERIFIED |
| SPSteel Products INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| SSSteel Shield Doors and More, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| SCSteelstar Corporation | Dacono | CO | — | ◇ UNVERIFIED |
| STSteel Tech Industrial CORP | Corona | CA | — | ◇ UNVERIFIED |
| STSteel Tech Partners LLC | Mitchell | IN | — | ◇ UNVERIFIED |
| STSteel Traditions | Vista | CA | — | ◇ UNVERIFIED |
| SRStephanus Rudolf Lemmer | Waverly | GA | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SBSterling Boiler and Mechanical, INC. | Evansville | IN | — | ◇ UNVERIFIED |
| SCStevenson & CO | Baltimore | MD | — | ◇ UNVERIFIED |
| SSStevens Sheetmetal & Ironworks, INC. | Pearl | MS | — | ◇ UNVERIFIED |
| SLSt. Louis Automatic Door, LLC | Valley Park | MO | — | ◇ UNVERIFIED |
| SRStockhouse Realty LLC | Bozrah | CT | — | ◇ UNVERIFIED |
| SPStockton Products | Livermore | CA | — | ◇ UNVERIFIED |
| SMStoll Metalcraft INC | Valencia | CA | — | ◇ UNVERIFIED |
| SPStone Perforating | Chicago | IL | — | ◇ UNVERIFIED |
| SFStore Front Properties | Albuquerque | NM | — | ◇ UNVERIFIED |
| SPSt. Paul Corrugating CO. | Minneapolis | MN | — | ◇ UNVERIFIED |
| SMStrand Manufacturing Company INC | Hopkins | MN | — | ◇ UNVERIFIED |
| SIStreetscape INC | Huntington Beach | CA | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Portland | OR | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Corvallis | OR | — | ◇ UNVERIFIED |
| STStroud's Texas Sheetmetal, LLC | Lubbock | TX | — | ◇ UNVERIFIED |
| SUStructures Unlimitied INC. | Bow | NH | — | ◇ UNVERIFIED |
| SOStruXure Outdoor, Inc. | Dahlonega | GA | — | ◇ UNVERIFIED |
| SIStrybuc Industries | Sharon Hill | PA | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal INC. | Austin | TX | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal, INC. | Leander | TX | — | ◇ UNVERIFIED |
