| RSRing Screw Llc-sterling Hts | Sterling Heights | MI | — | ◐ LIKELY ACTIVE |
| RPRiverdale Plating and Heat Treating CO | Riverdale | IL | — | ◐ LIKELY ACTIVE |
| RARobine and Welch Machine and Tool Company INC | Laurel | MS | — | ◐ LIKELY ACTIVE |
| RFRocknel Fastener INC | Rockford | IL | — | ◐ LIKELY ACTIVE |
| RMRockwood Mfg Co/rockwood | Rockwood | PA | — | ◐ LIKELY ACTIVE |
| RTRoll Technology Corporation | Greenville | SC | — | ◐ LIKELY ACTIVE |
| RIRomac Industries | Sultan | WA | — | ◐ LIKELY ACTIVE |
| RCRoppe Corporation (0374010077) | Fostoria | OH | — | ◐ LIKELY ACTIVE |
Rosenboom Machine & Tool Inc-spirit Lake | Spirit Lake | IA | — | ◐ LIKELY ACTIVE |
| RIRotek INC. | Florence | KY | — | ◐ LIKELY ACTIVE |
| RIRotex INC. | Cincinnati | OH | — | ◐ LIKELY ACTIVE |
| RSR.w. Screw Products, INC. | Massillon | OH | — | ◐ LIKELY ACTIVE |
| SISabre Industries Conroe Tx Facility | Conroe | TX | — | ◐ LIKELY ACTIVE |
| SISabre Industries Towers and Poles | Sioux City | IA | — | ◐ LIKELY ACTIVE |
| SSSamuel Son and Company (usa) INC | Iuka | MS | — | ◐ LIKELY ACTIVE |
| SSSamuel Son and CO USA INC | Heath | OH | — | ◐ LIKELY ACTIVE |
| SSSamuel, Son & CO. (usa) INC. D/b/a Samuel Pressure Vessel Group- Tomahawk | Tomahawk | WI | — | ◐ LIKELY ACTIVE |
| SMSamvardhana Motherson Reflectic | Marysville | MI | — | ◐ LIKELY ACTIVE |
| SDSan Diego Galvanizing INC | San Diego | CA | — | ◐ LIKELY ACTIVE |
| SBSanger Boat Mfg | Fresno | CA | — | ◐ LIKELY ACTIVE |
| SGSas Global Fka Sure Alloy Steel Corporation | Warren | MI | — | ◐ LIKELY ACTIVE |
| STSauk Technologies | Saukville | WI | — | ◐ LIKELY ACTIVE |
| SFSaulsbury Fire Rescue Inc., E-one, INC. | Preble | NY | — | ◐ LIKELY ACTIVE |
| SPSav-on Plating INC | Phoenix | AZ | — | ◐ LIKELY ACTIVE |
| SUSchawk USA LLC | Sandston | VA | — | ◐ LIKELY ACTIVE |
| SDSchneider-square D Field Service | East Haven | CT | — | ◐ LIKELY ACTIVE |
Schuff Steel CO | Phoenix | AZ | — | ◐ LIKELY ACTIVE |
Schuff Steel CO | Eloy | AZ | — | ◐ LIKELY ACTIVE |
Schuff Steel Company | Stockton | CA | — | ◐ LIKELY ACTIVE |
| SCSchumacher CO INC | Houston | TX | — | ◐ LIKELY ACTIVE |
| SASchwing America INC | White Bear Lake | MN | — | ◐ LIKELY ACTIVE |
| SIScot Inds. | Lone Star | TX | — | ◐ LIKELY ACTIVE |
| SIScot Industries, INC | Auburn | IN | — | ◐ LIKELY ACTIVE |
| SMSeabring Marine Industries, INC. | Williston | FL | — | ◐ LIKELY ACTIVE |
| SMSelkirk Metalbestos | Nampa | ID | — | ◐ LIKELY ACTIVE |
| SASenior Aerospace Absolute Manufacturing | Arlington | WA | — | ◐ LIKELY ACTIVE |
| S1Shape 1820 | Grand Haven | MI | — | ◐ LIKELY ACTIVE |
| SMSherwood Medical Industries | Deland | FL | — | ◐ LIKELY ACTIVE |
| SLShiroki-ga, LLC | Dalton | GA | — | ◐ LIKELY ACTIVE |
| SESiemens Energy and Automation | Grand Prairie | TX | — | ◐ LIKELY ACTIVE |
| SSSifco Selective Plating | Independence | OH | — | ◐ LIKELY ACTIVE |
| SCSilgan Closures Fka Amcor White Cap | Hazleton | PA | — | ◐ LIKELY ACTIVE |
| SCSilgan Containers Mfg CORP | Menomonie | WI | — | ◐ LIKELY ACTIVE |
| SSilvertowne | Winchester | IN | — | ◐ LIKELY ACTIVE |
| SSSilvex Surface Technology | Westbrook | ME | — | ◐ LIKELY ACTIVE |
| SMSimmons Manufacturing | Mcdonough | GA | — | ◐ LIKELY ACTIVE |
| SISimpson Industries INC * | Edon | OH | — | ◐ LIKELY ACTIVE |
Sioux City Foundry CO | South Sioux City | NE | — | ◐ LIKELY ACTIVE |
| SSSkilcraft Sheetmetal INC | Burlington | KY | — | ◐ LIKELY ACTIVE |
| SNSlac National Accelerator Laboratory | Menlo Park | CA | — | ◐ LIKELY ACTIVE |
| SRSmi Rebar South Caroliina | Columbia | SC | — | ◐ LIKELY ACTIVE |
| SESmith Equipment Manufacturing | Watertown | SD | — | ◐ LIKELY ACTIVE |
| SISmiths Ind Aerospace & Defense Sys | Clearwater | FL | — | ◐ LIKELY ACTIVE |
| SWSmith & Wesson Division | Houlton | ME | — | ◐ LIKELY ACTIVE |
| STSms Technical Services LLC | Osceola | AR | — | ◐ LIKELY ACTIVE |
| SMSmw Mfg Amsted Automotive Group-belleville | Belleville | MI | — | ◐ LIKELY ACTIVE |
| SMSmw Mfg Amsted Automotive Group-munith | Munith | MI | — | ◐ LIKELY ACTIVE |
| SMSmw Mfg INC | Oxford | MS | — | ◐ LIKELY ACTIVE |
| SISnap-on Incorporated | Milwaukee | WI | — | ◐ LIKELY ACTIVE |
| SISoundwich INC | Cleveland | OH | — | ◐ LIKELY ACTIVE |
| SASouth Atlantic Galvanizing | Chattanooga | TN | — | ◐ LIKELY ACTIVE |
| SASouth Atlantic Galvanizing | Graham | NC | — | ◐ LIKELY ACTIVE |
| SASouth Atlantic Galvanizing | Shannon | MS | — | ◐ LIKELY ACTIVE |
| SASouth Atlantic Galvanizing | Mulberry | FL | — | ◐ LIKELY ACTIVE |
| SASouth Atlantic Galvanizing | Travelers Rest | SC | — | ◐ LIKELY ACTIVE |
| SASouthern Aluminum Finishing CO Winston Paint | Villa Rica | GA | — | ◐ LIKELY ACTIVE |
| SASouthern Atlantic Galvanizing | Claxton | GA | — | ◐ LIKELY ACTIVE |
| SGSouthern Graphic Systems LLC | Florence | KY | — | ◐ LIKELY ACTIVE |
| SGSouthern Graphic Systems, LLC | Clarksville | TN | — | ◐ LIKELY ACTIVE |
| SPSouthwestern Plating Houston Plant | Houston | TX | — | ◐ LIKELY ACTIVE |
| SMSouthwest Metal Finishing - Calhoun Rd Plt | New Berlin | WI | — | ◐ LIKELY ACTIVE |
| SMSpecialty Metals Processing, INC. | Stow | OH | — | ◐ LIKELY ACTIVE |
| SISpeedring Inccorporated | Cullman | AL | — | ◐ LIKELY ACTIVE |
Spg International LLC Br #x032 Universal Brand | Aurora | CO | — | ◐ LIKELY ACTIVE |
| SFSpm Flow Control | Fort Worth | TX | — | ◐ LIKELY ACTIVE |
| SBSportsman Boat Manufacturing INC | Summerville | SC | — | ◐ LIKELY ACTIVE |
| STSps Technologies - Aerospace Products Division | Jenkintown | PA | — | ◐ LIKELY ACTIVE |
| SCSpx CORP Lightning Div | Rochester | NY | — | ◐ LIKELY ACTIVE |
| SFSpx Flow US INC | Delavan | WI | — | ◐ LIKELY ACTIVE |
| SDSquare D Company | Hopkins | SC | — | ◐ LIKELY ACTIVE |
| SPSr Products | Struthers | OH | — | ◐ LIKELY ACTIVE |
| SSSrt Sales and Service (1576001860) | Canton | OH | — | ◐ LIKELY ACTIVE |
| SSsb1 | Milwaukie | OR | — | ◐ LIKELY ACTIVE |
| SLStanadyne LLC - Jacksonville | Jacksonville | NC | — | ◐ LIKELY ACTIVE |
| SAStandard Aero (san Antonio) INC | San Antonio | TX | — | ◐ LIKELY ACTIVE |
| SAStandard Alloys Port Arthur | Port Arthur | TX | — | ◐ LIKELY ACTIVE |
| SIStandex International Spincraft Division | Billerica | MA | — | ◐ LIKELY ACTIVE |
| SLStanley Labounty | Two Harbors | MN | — | ◐ LIKELY ACTIVE |
| SPStar Pipe USA | Coffeyville | KS | — | ◐ LIKELY ACTIVE |
| SUStarpipe USA Dba Sp Foundry / Sp Foundry | South Coffeyville | OK | — | ◐ LIKELY ACTIVE |
| SPStar Precision | Longmont | CO | — | ◐ LIKELY ACTIVE |
| SIState Industries INC | Ashland City | TN | — | ◐ LIKELY ACTIVE |
| SISteelfab in Dublin Georgia INC | Dublin | GA | — | ◐ LIKELY ACTIVE |
Steelfab of Virginia, INC. | Emporia | VA | — | ◐ LIKELY ACTIVE |
| SFSteel Fabricators of Monroe LLC | Monroe | LA | — | ◐ LIKELY ACTIVE |
Steel Industries Plant 4 | Redford | MI | — | ◐ LIKELY ACTIVE |
| SKSteel King Industries INC | New London | WI | — | ◐ LIKELY ACTIVE |
| SMSteel Management Services | Nazareth | PA | — | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Ghent | KY | — | ◐ LIKELY ACTIVE |
| STSteel Treaters INC | Oriskany | NY | — | ◐ LIKELY ACTIVE |