| SSSelect Steel Incorporated | Ottawa | KS | — | ◇ UNVERIFIED |
| SFSelman Fabricating Company, INC. | Bessemer | AL | — | ◇ UNVERIFIED |
| SSemasys | Houston | TX | — | ◇ UNVERIFIED |
| SDSemco Duct and Acoustical Products, INC. | Roanoke | VA | — | ◇ UNVERIFIED |
| SISemco Incorporated | Morrilton | AR | — | ◇ UNVERIFIED |
| SISemco Incorporated | Roanoke | VA | — | ◇ UNVERIFIED |
| SISemco Incorporated Chillicothe | Chillicothe | MO | — | ◇ UNVERIFIED |
| SSSemco Southeastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SMSeminole Machine & Welding, INC. | Largo | FL | — | ◇ UNVERIFIED |
| SPSeneca Plastics LLC | Fostoria | OH | — | ◇ UNVERIFIED |
| SCSenju Comtek Corporation | San Jose | CA | — | ◇ UNVERIFIED |
| SHSenneca Holdings | Mankato | MN | — | ◇ UNVERIFIED |
| SISentinel Intelligence Group LLC | Brookpark | OH | — | ◇ UNVERIFIED |
| SPSentinel Products | Hyannis | MA | — | ◇ UNVERIFIED |
| SPSentry Protection LLC | Lakewood | OH | — | ◇ UNVERIFIED |
| SCSeptic Consulting LLC | Valdosta | GA | — | ◇ UNVERIFIED |
| SMSerett Metalworks | Brooklyn | NY | — | ◇ UNVERIFIED |
| SFSerpa Fabrication, INC. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| SCSerra CORP. | Nevada City | CA | — | ◇ UNVERIFIED |
| SISerrano Industries | El Paso | TX | — | ◇ UNVERIFIED |
| SMService Metal Fabricating INC | Rockaway | NJ | — | ◇ UNVERIFIED |
| SPService Partners Gutter Supply LLC | Jackson | TN | — | ◇ UNVERIFIED |
| SSService Steel Aerospace 4609 | Fife | WA | — | ◇ UNVERIFIED |
| SESet Enterprises Incorporated | North Vernon | IN | — | ◇ UNVERIFIED |
| SWSetzers Welding and Manufacturing | Beatrice | NE | — | ◇ UNVERIFIED |
| SPSeven Peaks, LLC & Bratek Engineering & Manufacturing, Inc. | Denver | CO | — | ◇ UNVERIFIED |
| SISewell Industrial, INC. | Shelby | NC | — | ◇ UNVERIFIED |
| SPSewell Plastics INC | City of Industry | CA | — | ◇ UNVERIFIED |
| SCSewing Collection, INC. | Union | NJ | — | ◇ UNVERIFIED |
| SFSfs Fabrication | Tulsa | OK | — | ◇ UNVERIFIED |
| SSSg Steel Services CO. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| SVShady Vent Aluminum Products INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| SCShakespeare Composite Structure LLC | Varnville | SC | — | ◇ UNVERIFIED |
| SCShakespeare Composite Structures | Newberry | SC | — | ◇ UNVERIFIED |
| SCShaklee CORP | Pleasanton | CA | — | ◇ UNVERIFIED |
| SFShane Felter Industries | Uniontown | PA | — | ◇ UNVERIFIED |
| SFShane Fonseca | Westlake Village | CA | — | ◇ UNVERIFIED |
| SSShane Stone Inc. | Roseburg | OR | — | ◇ UNVERIFIED |
| SCShape CORP 144th Facility | Spring Lake | MI | — | ◇ UNVERIFIED |
| SCShape CORP 1900 Facility | Grand Haven | MI | — | ◇ UNVERIFIED |
| SSShape Steel | Liberty | MO | — | ◇ UNVERIFIED |
| STSharkey Technology Group INC. Dba C & T Machining | Burbank | CA | — | ◇ UNVERIFIED |
| SIShatone, INC. | Whitesburg | GA | — | ◇ UNVERIFIED |
| SFShaw Fabrication & Manufacturing, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| SFShawnee Fabricators | Shawnee | OK | — | ◇ UNVERIFIED |
| SFShawnee Fabricators, INC. | Shawnee | OK | — | ◇ UNVERIFIED |
| SSShawnee Steel Company | Shawnee | OK | — | ◇ UNVERIFIED |
| SPShaw Process Fabricators | West Monroe | LA | — | ◇ UNVERIFIED |
| SSShaw Sss Fabricators | Addis | LA | — | ◇ UNVERIFIED |
| SShedmaster | Brentwood | NH | — | ◇ UNVERIFIED |
| SMShed Masters, LLC | Deridder | LA | — | ◇ UNVERIFIED |
| SMSheet Metal Designs | Jamesport | MO | — | ◇ UNVERIFIED |
| SMSheet Metal Engineers, INC. | Martinez | GA | — | ◇ UNVERIFIED |
| SMSheet Metal Forms L.l.c. | Glendale | AZ | — | ◇ UNVERIFIED |
 Sheet Metal Solutions INC | Tangent | OR | — | ◇ UNVERIFIED |
| Sheet Metal Solutions INC | Tangent | OR | — | ◇ UNVERIFIED |
| SMSheet Metal Specialist of Edmond, LLC | Edmond | OK | — | ◇ UNVERIFIED |
| SMSheet Metal Specialties Inc | Bismarck | ND | — | ◇ UNVERIFIED |
| SMSheet Metal Systems, INC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| SMSheet Metal Unlimited PL Inc. | Sunrise | FL | — | ◇ UNVERIFIED |
| SMSheet Metal Works | West Valley City | UT | — | ◇ UNVERIFIED |
| SMSheet Metal Works LLC | Nashville | TN | — | ◇ UNVERIFIED |
| SSShelby Steel LLC | Pell City | AL | — | ◇ UNVERIFIED |
| SSShelco Steel Works INC | South Holland | IL | — | ◇ UNVERIFIED |
| SMSheldon Mechanical Corporation | Santa Clarita | CA | — | ◇ UNVERIFIED |
| SWShelter Works (0317012011) | Bucyrus | OH | — | ◇ UNVERIFIED |
| SIShelton Industrial Pattern INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| SSShenkle Steel LLC | Madison | VA | — | ◇ UNVERIFIED |
| SSSheridan Sheet Metal CO | New Hope | MN | — | ◇ UNVERIFIED |
| SMSherwood Manufacturing Corporation | Northport | MI | — | ◇ UNVERIFIED |
| SBShew Brothers INC. | Marion | IL | — | ◇ UNVERIFIED |
| STSheyenne Tooling & Mfg CO | Cooperstown | ND | — | ◇ UNVERIFIED |
| SUShick U.s.a. | Kansas City | MO | — | ◇ UNVERIFIED |
| SCShield Casework LLC | North Kansas City | MO | — | ◇ UNVERIFIED |
| SHShields Holdings, LLC | Martinsville | IN | — | ◇ UNVERIFIED |
| SIShiloh Industries, LLC | Dover | PA | — | ◇ UNVERIFIED |
| SIShiloh Industries, LLC | New Freedom | PA | — | ◇ UNVERIFIED |
| SMShiner Manufacturing INC. | Shiner | TX | — | ◇ UNVERIFIED |
| SHS & H Metal Products Inc | Topeka | IN | — | ◇ UNVERIFIED |
| SBShollenbarger - Borella INC Dba Golden State Steel | Fowler | CA | — | ◇ UNVERIFIED |
| SRShon Reim | San Jacinto | CA | — | ◇ UNVERIFIED |
| SRShon Reim | Temecula | CA | — | ◇ UNVERIFIED |
| SVShop Vac CORP. | Canton | PA | — | ◇ UNVERIFIED |
| SIShoreline Industries, INC. | Portsmouth | VA | — | ◇ UNVERIFIED |
| SVShoreline Vinyl Systems, INC. | Denton | MD | — | ◇ UNVERIFIED |
| SIShoremaster INC | Fergus Falls | MN | — | ◇ UNVERIFIED |
| SIShouldice Industrial Manufacturers & Contractors INC. | Battle Creek | MI | — | ◇ UNVERIFIED |
| SBShowa Best Glove, INC | Fayette | AL | — | ◇ UNVERIFIED |
| SMShow Me Welding and Fabrication, LLC | Curryville | MO | — | ◇ UNVERIFIED |
| STShuert Technologies | Sterling Heights | MI | — | ◇ UNVERIFIED |
| SHS & H Welding INC Dba S & H Metals | Sacramento | CA | — | ◇ UNVERIFIED |
| SASiag Aerisyn LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| SLSic Lazaro US INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SMSieckmann Metal Fab INC | Eagle Creek | OR | — | ◇ UNVERIFIED |
 Siemens Industry INC | El Paso | TX | — | ◇ UNVERIFIED |
| SCSierra CIS, Inc. | Placerville | CA | — | ◇ UNVERIFIED |
| SHSierra Hard Surface Samples, INC. | Chatsworth | GA | — | ◇ UNVERIFIED |
| SLSierra Log Homes | Chico | CA | — | ◇ UNVERIFIED |
| SSiffron | Des Plaines | IL | — | ◇ UNVERIFIED |
| SESigma Extruding CORP. | Jacksonville | FL | — | ◇ UNVERIFIED |
