| SCSb Carroll, INC. | Bloomingdale | OH | — | ◇ UNVERIFIED |
| SGSbi General & Mechanical INC. | Waterbury | NE | — | ◇ UNVERIFIED |
| SBS & B Machine Company, INC | Mobile | AL | — | ◇ UNVERIFIED |
| SRS&b Rolling Inc-thread Rolling | San Fernando | CA | — | ◇ UNVERIFIED |
| SSScafco Steel Stud Manufacturing | Stockton | CA | — | ◇ UNVERIFIED |
| SIScenic Industries, LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| SMSchadegg Mechanical INC | South Saint Paul | MN | — | ◇ UNVERIFIED |
| SMSchaffner Machine Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SCSchefers Construction Services INC. | Grain Valley | MO | — | ◇ UNVERIFIED |
| SFSchetchl Fab LLC | Newark | NJ | — | ◇ UNVERIFIED |
| SLSchlage Lock Company LLC Dba Krieger Specialty Products | Pico Rivera | CA | — | ◇ UNVERIFIED |
| SISchletter INC | Shelby | NC | — | ◇ UNVERIFIED |
| SBSchneider Brothers Corporation | North Syracuse | NY | — | ◇ UNVERIFIED |
| SSSchneider Simpson Sheet Metal | Tacoma | WA | — | ◇ UNVERIFIED |
 Schuff Steel | Cupertino | CA | — | ◇ UNVERIFIED |
| Schuff Steel - Atlantic, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| Schuff Steel Company | Aliso Viejo | CA | — | ◇ UNVERIFIED |
| Schuff Steel-gulf Coast Airline Drive Facility | Houston | TX | — | ◇ UNVERIFIED |
| SMSchuler Machine & Tool Company | Louisville | KY | — | ◇ UNVERIFIED |
| SBSchulte Building Systems | Effingham | IL | — | ◇ UNVERIFIED |
| SCSchwab CORP. | Rochester | NY | — | ◇ UNVERIFIED |
| SCSchwab Corporation | Cannelton | IN | — | ◇ UNVERIFIED |
| SEScott Equipment CO | Arlington | MN | — | ◇ UNVERIFIED |
| SMScott Manufacturing Co., INC. | Grayslake | IL | — | ◇ UNVERIFIED |
| SSScott Systems International, LLC | Marion | OH | — | ◇ UNVERIFIED |
| SPSc Products, INC. | Eldorado | IL | — | ◇ UNVERIFIED |
| SMScreed Master Products INC | El Cajon | CA | — | ◇ UNVERIFIED |
| STScreen Tech International | Tulsa | OK | — | ◇ UNVERIFIED |
| SCScrew Conveyor Pacific CORP | Visalia | CA | — | ◇ UNVERIFIED |
| SSScs Sheet Metal | Grain Valley | MO | — | ◇ UNVERIFIED |
| SMScully's Metal Fabrication, INC. | Morgan City | LA | — | ◇ UNVERIFIED |
| SSScw Scrape Certify Welding | Fallbrook | CA | — | ◇ UNVERIFIED |
| SDS. Diamond Steel INC. | Iowa City | IA | — | ◇ UNVERIFIED |
| SISdi INC. | Sherman | IL | — | ◇ UNVERIFIED |
| SBSea Box | Cinnaminson | NJ | — | ◇ UNVERIFIED |
| SSeabox | Cinnaminson | NJ | — | ◇ UNVERIFIED |
| SBSea Box INC. | Cinnaminson | NJ | — | ◇ UNVERIFIED |
| SCSeaFab Corporation | Seattle | WA | — | ◇ UNVERIFIED |
| STSeal Tite LLC | Hillsboro | OH | — | ◇ UNVERIFIED |
| STSeashell Technology | San Diego | CA | — | ◇ UNVERIFIED |
| SSSea Side Specialties INC. | Delray Beach | FL | — | ◇ UNVERIFIED |
| SASeasons at Apple Valley Memor | Apple Valley | MN | — | ◇ UNVERIFIED |
| SCSechrist-hall CO | Corpus Christi | TX | — | ◇ UNVERIFIED |
| SPSeco Prods CORP | Washington | MO | — | ◇ UNVERIFIED |
| SHSecurity Holdings, LLC | Carlstadt | NJ | — | ◇ UNVERIFIED |
| SMSedalia Machine Works Inc.* | Sedalia | MO | — | ◇ UNVERIFIED |
| SCSeelye Craftsman CO | Minneapolis | MN | — | ◇ UNVERIFIED |
| SISefa Industrial Solutions | Gaston | SC | — | ◇ UNVERIFIED |
| SISeilkop Industries, INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| SMSei Manufacturing, Incorporated | Cromwell | IN | — | ◇ UNVERIFIED |
| SISeizmic INC | Pomona | CA | — | ◇ UNVERIFIED |
| SMSelden Mast INC | Charleston | SC | — | ◇ UNVERIFIED |
| SISelecsource, INC. | Suwanee | GA | — | ◇ UNVERIFIED |
| SBSelect Build INC | Escondido | CA | — | ◇ UNVERIFIED |
| SSSelect Steel Incorporated | Ottawa | KS | — | ◇ UNVERIFIED |
| SPSelling Precision INC. | West Milford | NJ | — | ◇ UNVERIFIED |
| SFSelman Fabricating Company, INC. | Bessemer | AL | — | ◇ UNVERIFIED |
| SMSelmco Metal Fabricators, INC. | Sidney | OH | — | ◇ UNVERIFIED |
| SDSemco Duct and Acoustical Products, INC. | Roanoke | VA | — | ◇ UNVERIFIED |
| SISemco INC | Marion | OH | — | ◇ UNVERIFIED |
| SISemco Incorporated | Roanoke | VA | — | ◇ UNVERIFIED |
| SISemco Incorporated | Morrilton | AR | — | ◇ UNVERIFIED |
| SISemco Incorporated Chillicothe | Chillicothe | MO | — | ◇ UNVERIFIED |
| SSSemco Southeastern Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| SMSeminole Machine & Welding, INC. | Largo | FL | — | ◇ UNVERIFIED |
| SOSenior Operations LLC Dba Senior Aerospace Metal Bellows | Sharon | MA | — | ◇ UNVERIFIED |
| SCSenju Comtek Corporation | San Jose | CA | — | ◇ UNVERIFIED |
| SISentinel Intelligence Group LLC | Brookpark | OH | — | ◇ UNVERIFIED |
| SFSentry Fire Protection Incorporated | York | PA | — | ◇ UNVERIFIED |
| SSSentry Siren, INC. | Canon City | CO | — | ◇ UNVERIFIED |
| SSerco | San Diego | CA | — | ◇ 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 |
| SWSetzers Welding and Manufacturing | Beatrice | NE | — | ◇ UNVERIFIED |
| SPSeven Peaks, LLC & Bratek Engineering & Manufacturing, Inc. | Denver | CO | — | ◇ UNVERIFIED |
| SISewell Industrial, INC. | Shelby | NC | — | ◇ UNVERIFIED |
| SGSfc Global Supply Chain, INC. | Pottstown | PA | — | ◇ UNVERIFIED |
| SFS & F Machining and Finishing, INC. | Kenosha | WI | — | ◇ UNVERIFIED |
| SFSfs Fabrication | Tulsa | OK | — | ◇ UNVERIFIED |
| SISg Investment America, INC | Vacaville | CA | — | ◇ UNVERIFIED |
| SBSGJB Business Holdings, Inc. | Circle Pines | MN | — | ◇ UNVERIFIED |
| SSSg Steel Services CO. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| SVShady Vent Aluminum Products INC. | Atlanta | GA | — | ◇ 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 |
| SMShapiro Metal Supply Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| STSharkey Technology Group INC. Dba C & T Machining | Burbank | CA | — | ◇ UNVERIFIED |
| SIShatone, INC. | Whitesburg | GA | — | ◇ UNVERIFIED |
| SCShaw Connex Incorporated | Troutville | VA | — | ◇ UNVERIFIED |
| SCShaw Constructors INC - Sw Region - Sulphur Facility | Sulphur | LA | — | ◇ UNVERIFIED |
| SFShaw Fabrication & Manufacturing, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
