| SOSenior Operations LLC Dba Senior Aerospace Metal Bellows | Sharon | MA | — | ◇ UNVERIFIED |
| SFSentry Fire Protection Incorporated | York | PA | — | ◇ UNVERIFIED |
| SSSentry Siren, INC. | Canon City | CO | — | ◇ UNVERIFIED |
| SSerco | San Diego | CA | — | ◇ UNVERIFIED |
| SGSfc Global Supply Chain, INC. | Pottstown | PA | — | ◇ UNVERIFIED |
| SFS & F Machining and Finishing, INC. | Kenosha | WI | — | ◇ UNVERIFIED |
| SISg Investment America, INC | Vacaville | CA | — | ◇ UNVERIFIED |
| SBSGJB Business Holdings, Inc. | Circle Pines | MN | — | ◇ UNVERIFIED |
| SMShapiro Metal Supply Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SCShaw Connex Incorporated | Troutville | VA | — | ◇ UNVERIFIED |
| SCShaw Constructors INC - Sw Region - Sulphur Facility | Sulphur | LA | — | ◇ UNVERIFIED |
| SFShaw Fabricators | Houston | TX | — | ◇ UNVERIFIED |
| SSShaw Shreveport Shreveport Facility | Shreveport | LA | — | ◇ UNVERIFIED |
| SSShaw Sunland Fabricators, LLC | Walker | LA | — | ◇ UNVERIFIED |
| SWShaw Word Ind. Fabricators | Tulsa | OK | — | ◇ UNVERIFIED |
| SMSheet Metal Specialties LLC | Monroe | LA | — | ◇ UNVERIFIED |
| SMSheffield Metals, International | Denver | CO | — | ◇ UNVERIFIED |
| SIShellpro INC | Lockeford | CA | — | ◇ UNVERIFIED |
| SFSho-Me Fabrication LLC | Springfield | MO | — | ◇ UNVERIFIED |
| SBShouldice Bros Sheet Metal Mfg & Millwrights | Battle Creek | MI | — | ◇ UNVERIFIED |
| SIShumaker Ind/northumberland Plt | Northumberland | PA | — | ◇ UNVERIFIED |
| SCSi Chem LLC | Marietta | GA | — | ◇ UNVERIFIED |
| SISidco, INC (0575010226) | Sidney | OH | — | ◇ UNVERIFIED |
| SISidel, INC. | Norcross | GA | — | ◇ UNVERIFIED |
| SISierra International Machinery LLC | Bakersfield | CA | — | ◇ UNVERIFIED |
| STSierra Technologies | Tulsa | OK | — | ◇ UNVERIFIED |
| SISigntech INC | San Diego | CA | — | ◇ UNVERIFIED |
 Silver Ring Splint Company | Charlottesville | VA | — | ◇ UNVERIFIED |
| SLSimair, LTD | Bixby | OK | — | ◇ UNVERIFIED |
| SMSimmons Manufacturing Company | Mcdonough | GA | — | ◇ UNVERIFIED |
| SISimtek INC. | Amityville | NY | — | ◇ UNVERIFIED |
| SUSimt Usa, LLC | Fairburn | GA | — | ◇ UNVERIFIED |
| SMSirk Mechanical Services, INC. | Philadelphia | PA | — | ◇ UNVERIFIED |
| SLSistek LLC | Somerset | TX | — | ◇ UNVERIFIED |
| SHSJT Holding Corp. | Bayamon | PR | — | ◇ UNVERIFIED |
| SRSkf Reelcraft Industries | Columbia City | IN | — | ◇ UNVERIFIED |
| SSSk Sales Company, INC. | Mountain Top | PA | — | ◇ UNVERIFIED |
| SGSkyground Group Inc | Clearbrook | MN | — | ◇ UNVERIFIED |
| SGSkyground Group Inc. | Clearbrook | MN | — | ◇ UNVERIFIED |
| SISkylon INC | Sugar Grove | PA | — | ◇ UNVERIFIED |
| STSky Tec Container Corporation | Grand Rapids | MI | — | ◇ UNVERIFIED |
| SLS L Auburn INC | Auburn | NY | — | ◇ UNVERIFIED |
| SMSmc Metal Fabricators INC | Oshkosh | WI | — | ◇ UNVERIFIED |
| SSSmeal Sfa LLC | Snyder | NE | — | ◇ UNVERIFIED |
| SMS. M. F., Inc. | O'Fallon | MO | — | ◇ UNVERIFIED |
| SCSmi Construction, INC. | San Leandro | CA | — | ◇ UNVERIFIED |
| SBSmith Brothers Racing Products, INC. | Redmond | OR | — | ◇ UNVERIFIED |
| SISmith-cooper International | Commerce | CA | — | ◇ UNVERIFIED |
 Smiths Interconnect INC | South Deerfield | MA | — | ◇ UNVERIFIED |
| SSSmith SS, LLC | Bowling Green | OH | — | ◇ UNVERIFIED |
| SMSmj Metal Co., INC | Amherst | MA | — | ◇ UNVERIFIED |
| SMS.m.k. Machine & Fabrication, INC. | Ringgold | GA | — | ◇ UNVERIFIED |
| SMSmoky Mountain Rod & Customs, LLC | Knoxville | TN | — | ◇ UNVERIFIED |
| SESMP Engineering, Inc. | Arcadia | CA | — | ◇ UNVERIFIED |
| SISms Industries, LLC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| SMSmtc Manufacturing CORP of Massachusetts | Franklin | MA | — | ◇ UNVERIFIED |
| STSnapp Tool & Die, Inc. | El Paso | TX | — | ◇ UNVERIFIED |
| SISnap-tite INC / Nat'l Fire Ho | Compton | CA | — | ◇ UNVERIFIED |
| SESnowline Engineering | Shingle Springs | CA | — | ◇ UNVERIFIED |
| SESnyder Equipment Co., INC. | Nixa | MO | — | ◇ UNVERIFIED |
 Snyder Manufacturing, Inc. | Salamanca | NY | — | ◇ UNVERIFIED |
| SSSoftrol Systems, INC | Acworth | GA | — | ◇ UNVERIFIED |
| SPSolidification Products International, INC | North Haven | CT | — | ◇ UNVERIFIED |
| SMSollock Metal Works, LLC | Clute | TX | — | ◇ UNVERIFIED |
| SISomething in the Orange | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SMSondrol Machining LLC | Sunburg | MN | — | ◇ UNVERIFIED |
| SPSooner Pipe Crosby Yard | Crosby | TX | — | ◇ UNVERIFIED |
| SISos/aaa Iron Works INC | Mobile | AL | — | ◇ UNVERIFIED |
| SPSouriau Paande Sequim | Sequim | WA | — | ◇ UNVERIFIED |
| SASouth Austin Workshop, LLC | Austin | TX | — | ◇ UNVERIFIED |
| SCSoutheast Culvert, INC. | Cleveland | AL | — | ◇ UNVERIFIED |
| SESoutheastern Engineering Sales INC | Colonial Heights | VA | — | ◇ UNVERIFIED |
| SMSoutheastern Metal Fabricator | Rockland | MA | — | ◇ UNVERIFIED |
| SCSouthern Custom Fabrication | Carencro | LA | — | ◇ UNVERIFIED |
| SESouthern Enterprises of Southeast Louisiana, INC. | Ponchatoula | LA | — | ◇ UNVERIFIED |
| SISouthern Industrial Mechanical Maintenance Company Ii, LLC | Brownsville | TN | — | ◇ UNVERIFIED |
| SISouthern Industrial Mechanical Maintenance Company, LLC | Shreveport | LA | — | ◇ UNVERIFIED |
| SISouthern Industrial Metal Fabricators INC | Smyrna | GA | — | ◇ UNVERIFIED |
| SMSouthern Metal Processing Company | Oxford | AL | — | ◇ UNVERIFIED |
| SMSouthern Metal Restoration Company, LLC | Newnan | GA | — | ◇ UNVERIFIED |
| SMSouthern Miscellaneous Columbia LLC | West Columbia | SC | — | ◇ UNVERIFIED |
| SNSouthern Natural Gas - Mdc | Pinson | AL | — | ◇ UNVERIFIED |
| SPSouthern Perfection Fabrication Holdings, INC. | Byron | GA | — | ◇ UNVERIFIED |
| SRSouthern Rust Furniture LLC | Monroe | NC | — | ◇ UNVERIFIED |
| STSouthern Thermal Solutions, INC. | Sanford | NC | — | ◇ UNVERIFIED |
| STSouthern Tube Form | Clinton | TN | — | ◇ UNVERIFIED |
| SVSouthern Vac, LLC | Grand Prairie | TX | — | ◇ UNVERIFIED |
| SCSouth-land Carbon Products, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| SMSouthland Manufacturing INC | Douglasville | GA | — | ◇ UNVERIFIED |
| SPSouthland Pipe CORP. | Rialto | CA | — | ◇ UNVERIFIED |
| SPSouthland Pipe Corporation | Hesperia | CA | — | ◇ UNVERIFIED |
| SLSouthline - Lpgs Tanforan LLC | South San Francisco | CA | — | ◇ UNVERIFIED |
| SPSouth Plains Steel, INC. | Lubbock | TX | — | ◇ UNVERIFIED |
| SMSouthwark Metal Manufacturing CO. | Fremont | NE | — | ◇ UNVERIFIED |
| SESouthwest Engineering Company | Oklahoma City | OK | — | ◇ UNVERIFIED |
| SCSpaid Corporation, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| SSSpare Skid Plate | Aurora | CO | — | ◇ UNVERIFIED |
| SESparkman Enterprises LLC | Tucson | AZ | — | ◇ UNVERIFIED |
| SSSpartan Steel LLC | Pocatello | ID | — | ◇ UNVERIFIED |
| SMSpartech Marine Industries Florida | Rockledge | FL | — | ◇ UNVERIFIED |
