| SIStar Instrument | Orange | CA | — | ◇ UNVERIFIED |
| SMStark's Metal Works Inc. | Menomonie | WI | — | ◇ UNVERIFIED |
| SAStarlite Aluminum Products INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| SMStar Machine Co. Inc. | Nashua | NH | — | ◇ UNVERIFIED |
| SMStar Manufacturing INC | Blaine | MN | — | ◇ UNVERIFIED |
| SLStarting Line Products, INC. | Idaho Falls | ID | — | ◇ UNVERIFIED |
| SCSt. Charles Stamping, INC. | Saint Charles | IL | — | ◇ UNVERIFIED |
| SCST Company, LLC | Angola | IN | — | ◇ UNVERIFIED |
| SSStead Sheet Metal INC. | Aurora | IL | — | ◇ UNVERIFIED |
| STSteam Turbine Alternative Resources | Marion | OH | — | ◇ UNVERIFIED |
| SBSteel Building Components INC. | Edison | NJ | — | ◇ UNVERIFIED |
| SCSteel City CORP | Youngstown | OH | — | ◇ UNVERIFIED |
| SISteelco INC | Denver | CO | — | ◇ UNVERIFIED |
| SISteeldeck INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| SDSteel Designs Iron Artwork LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| SISteeler INC | Seattle | WA | — | ◇ UNVERIFIED |
 Steele Solutions INC | Franklin | WI | — | ◇ UNVERIFIED |
| SFSteel Fab | Abingdon | VA | — | ◇ UNVERIFIED |
| SFSteel Fab a Div. of Samuel Pressure Vessel Group (plant #2) | Abingdon | VA | — | ◇ UNVERIFIED |
| SFSteel Farmer LLC | Saint Francis | WI | — | ◇ UNVERIFIED |
 Steelhead Metal Works | Newark | CA | — | ◇ UNVERIFIED |
| SNSteel Nutz, Inc. | Murrieta | CA | — | ◇ UNVERIFIED |
| SPSteel Partners, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| SPSteel Partners, LLC | Henderson | NV | — | ◇ UNVERIFIED |
| SPSteel Partners, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| SPSteel Plate L.l.c. | Tallmadge | OH | — | ◇ UNVERIFIED |
| SPSteel Products INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| SPSteel Products, INC | Sarasota | FL | — | ◇ UNVERIFIED |
| SMSteelrunner Metal Fabrication LLC | Beaverton | OR | — | ◇ UNVERIFIED |
| SSSteel Services, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
 Steel Services Supplies | Toa Baja | PR | — | ◇ UNVERIFIED |
| STSteel Tech Partners LLC | Mitchell | IN | — | ◇ UNVERIFIED |
| SIStellar Industries, INC. | Hastings | NE | — | ◇ UNVERIFIED |
| SMStellar Machine Incorporated | Kingston | PA | — | ◇ UNVERIFIED |
| SMStenerson Machine INC | Red Wing | MN | — | ◇ UNVERIFIED |
| SJStephen J Vandehey | Cornelius | OR | — | ◇ UNVERIFIED |
| SMStephens Machine Incorporated | Kokomo | IN | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SBSterling Boiler & Mechanical LLC | Evansville | IN | — | ◇ UNVERIFIED |
| SDSterling Dula, a Division of Kane Innovations | Erie | PA | — | ◇ UNVERIFIED |
 Sterling Precision LLC Dba Vitesse Systems Clinton Ma | Clinton | MA | — | ◇ UNVERIFIED |
| SSSterling Steel Company | Portland | OR | — | ◇ UNVERIFIED |
| SCStevenson & CO | Baltimore | MD | — | ◇ UNVERIFIED |
| SSStevens Sheetmetal & Ironworks, INC. | Pearl | MS | — | ◇ UNVERIFIED |
| SMStevken Manufacturing | Billerica | MA | — | ◇ UNVERIFIED |
| SIStewart Iron Works LLC | Erlanger | KY | — | ◇ UNVERIFIED |
| SRStiles Real Estate, LLC | Addison | IL | — | ◇ UNVERIFIED |
| SIStillion Industries, Inc. | Dexter | MI | — | ◇ UNVERIFIED |
| SIStillion Industries, Inc. | Dexter | MI | — | ◇ UNVERIFIED |
| SIStiltz Iron, INC | Clarksville | TN | — | ◇ UNVERIFIED |
 Stingray Manufacturing, LLC | Brentwood | NH | — | ◇ UNVERIFIED |
| SJSt Joseph Machine & Speed LLC | Saint Joseph | MO | — | ◇ UNVERIFIED |
| SLSt. Louis Metallizing Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SLSt. Louis Thermal Spray and Grinding, LLC | Granite City | IL | — | ◇ UNVERIFIED |
| SMStockbridge Manufacturing, INC. | Stockbridge | WI | — | ◇ UNVERIFIED |
| SMStockbridge Manufacturing, INC. | Chilton | WI | — | ◇ UNVERIFIED |
| SMStockbridge Mfg CO | Stockbridge | MI | — | ◇ UNVERIFIED |
| SRStockhouse Realty LLC | Bozrah | CT | — | ◇ UNVERIFIED |
| SIStocklin Iron INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SWStokes Welding and Machine Shop | Brunswick | GA | — | ◇ UNVERIFIED |
| SMStoll Metalcraft INC | Valencia | CA | — | ◇ UNVERIFIED |
| SMStone Manufacturing Company | Gardena | CA | — | ◇ UNVERIFIED |
| SMStone Manufacturing Custom Handmade Fireplace Accessories LLC | Buffalo Grove | IL | — | ◇ UNVERIFIED |
| SCStott Craft, INC. | Mc Intosh | FL | — | ◇ UNVERIFIED |
| SMStout Machine INC | Corvallis | OR | — | ◇ UNVERIFIED |
| SPSt. Paul Corrugating CO. | Minneapolis | MN | — | ◇ UNVERIFIED |
| SPSt Paul Machine & Design INC | Shoreview | MN | — | ◇ UNVERIFIED |
| SPSt Paul Machine - Design INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| SMStp Machine, LLC | El Dorado | AR | — | ◇ UNVERIFIED |
| SMStrand Manufacturing Company INC | Hopkins | MN | — | ◇ UNVERIFIED |
| SMStrathmore Machinery INC | Strathmore | CA | — | ◇ UNVERIFIED |
| SIStreamline Industries, LLC | Jeanerette | LA | — | ◇ UNVERIFIED |
| SPStreamline Precision INC. | Fairport | NY | — | ◇ UNVERIFIED |
| SMStrecker Machine INC. | Heizer | KS | — | ◇ UNVERIFIED |
| SIStreetscape INC | Huntington Beach | CA | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Corvallis | OR | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Portland | OR | — | ◇ UNVERIFIED |
| SSStretch Solutions LLC | Riverside | CA | — | ◇ UNVERIFIED |
| STStripping The Gears LLC | Spanish Fork | UT | — | ◇ UNVERIFIED |
| SMStrobel Machine, INC. | Worthington | PA | — | ◇ UNVERIFIED |
| STStroud's Texas Sheetmetal, LLC | Lubbock | TX | — | ◇ UNVERIFIED |
| SCStructural Composites Ind | Pomona | CA | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal INC. | Austin | TX | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal, INC. | Leander | TX | — | ◇ UNVERIFIED |
| SAStuebing Automatic Machine Company | Cincinnati | OH | — | ◇ UNVERIFIED |
| SMSturbridge Machining Services LLC | Southbridge | MA | — | ◇ UNVERIFIED |
| SPStx Process Equipment LLC | Freer | TX | — | ◇ UNVERIFIED |
| SMSuburban Machine Corporation | Wheeling | IL | — | ◇ UNVERIFIED |
| SMSuburban Metal Products | Circleville | OH | — | ◇ UNVERIFIED |
| SSSudholt Sheet Metal, INC. | Aviston | IL | — | ◇ UNVERIFIED |
| SHSugar Hollow Machine Shop INC | Jacksboro | TN | — | ◇ UNVERIFIED |
| SDSulek Descartes LC | Lake Forest | CA | — | ◇ UNVERIFIED |
| SPSulfrian Prototype Machining Ltd. | Longmont | CO | — | ◇ UNVERIFIED |
| SCSulzer Chemtech | Tulsa | OK | — | ◇ UNVERIFIED |
| SPSulzer Pumps | Portland | OR | — | ◇ UNVERIFIED |
| SPSulzer Pump Services (us) INC. | Mobile | AL | — | ◇ UNVERIFIED |
| SISumatech, INC. | White Marsh | MD | — | ◇ UNVERIFIED |
| SCSummit Careers INC | East Longmeadow | MA | — | ◇ UNVERIFIED |
| SGSummit Gold Enterprises LP | Rancho Cordova | CA | — | ◇ UNVERIFIED |
| SISummit INC | Portland | OR | — | ◇ UNVERIFIED |
