| SISpacesonic INC | Union City | CA | — | ◇ UNVERIFIED |
| SMSpartech Marine Industries Florida | Rockledge | FL | — | ◇ UNVERIFIED |
| SESparton Enterprises LLC | Norton | OH | — | ◇ UNVERIFIED |
| SFSpecial Fab & Machine, INC. | Lexington | NC | — | ◇ UNVERIFIED |
 Special-lite, INC. - | Benton Harbor | MI | — | ◇ UNVERIFIED |
| SPSpecial Products Energy | Canton | MA | — | ◇ UNVERIFIED |
| SMSpecialties Mfg Co-brecon Ind Pk | Talladega | AL | — | ◇ UNVERIFIED |
| SLSpecialty Lens Corporation | Salt Lake City | UT | — | ◇ UNVERIFIED |
| SMSpecialty Manufacturing | Amesbury | MA | — | ◇ UNVERIFIED |
| SSSpecialty Steel Services Facility | Philadelphia | PA | — | ◇ UNVERIFIED |
| SWSpecified Woodworking Corporation | Laurel | MD | — | ◇ UNVERIFIED |
| SASpectrum Aquatics | Missoula | MT | — | ◇ UNVERIFIED |
| SISpeedling, INC. | Ruskin | FL | — | ◇ UNVERIFIED |
| SMSpill-stop Mfg. LLC | Melrose Park | IL | — | ◇ UNVERIFIED |
| SBSplendor Boats, INC. | Silver Lake | IN | — | ◇ UNVERIFIED |
| SSSpraying System CO | Wheaton | IL | — | ◇ UNVERIFIED |
| SSSpraying Systems CO | Merrimack | NH | — | ◇ UNVERIFIED |
| SCSpringdale Complex | Springdale | AR | — | ◇ UNVERIFIED |
| SWSpringfield Wire INC | Springfield | MA | — | ◇ UNVERIFIED |
| SASr - Arkansas | Wilson | AR | — | ◇ UNVERIFIED |
| SISrp Industries LLC | Akron | OH | — | ◇ UNVERIFIED |
| SWSsab Wear Solutions LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| SSS & S Metal Fabricators | Chamois | MO | — | ◇ UNVERIFIED |
| SCSst Custom Fabricators | Okeechobee | FL | — | ◇ UNVERIFIED |
| SPStack-on Products | Wauconda | IL | — | ◇ UNVERIFIED |
| SPStainless Process Systems | Oxnard | CA | — | ◇ UNVERIFIED |
| SGStandard Glas, Star Glas INC. | Bremen | IN | — | ◇ UNVERIFIED |
| SGStandard Golf CO | Cedar Falls | IA | — | ◇ UNVERIFIED |
| SPStandard Prods CO | Port Clinton | OH | — | ◇ UNVERIFIED |
| SRStandard Rubber Products | Hanover | MA | — | ◇ UNVERIFIED |
| SSStandard Steel Fabricating CO INC | Seattle | WA | — | ◇ UNVERIFIED |
| SWStanford Wood Products CO INC. | Stanford | KY | — | ◇ UNVERIFIED |
| SBStanley Black & Decker | Riverview | FL | — | ◇ UNVERIFIED |
| SEStanley Engineered Fastening | Chesterfield | MI | — | ◇ UNVERIFIED |
| SBStar Building (formerly Ceco Buildings) | Lockeford | CA | — | ◇ UNVERIFIED |
| SBStar Building Sys | Elizabethton | TN | — | ◇ UNVERIFIED |
| SIStarlite Ind/lower Merion | Bryn Mawr | PA | — | ◇ UNVERIFIED |
| SFState Fabricators, INC. | Farmingtn Hls | MI | — | ◇ UNVERIFIED |
| SBSteel Buildings and Structures | Mount Airy | NC | — | ◇ UNVERIFIED |
 Steele Solutions INC | South Milwaukee | WI | — | ◇ UNVERIFIED |
| SFSteel Fab Enterprises Ss Fisher Landfill | Lancaster | PA | — | ◇ UNVERIFIED |
 Steelfab, INC. | York | SC | — | ◇ UNVERIFIED |
| Steelfab, INC. - Texas Division | Durant | OK | — | ◇ UNVERIFIED |
| SOSteelfab of Fayetteville | Fayetteville | NC | — | ◇ UNVERIFIED |
| SOSteelfab Oregon, INC. | Spokane | WA | — | ◇ UNVERIFIED |
| SFSteel Fabricators INC. | Lincoln | NE | — | ◇ UNVERIFIED |
| SFSteel Fabricators, INC. | Fort Collins | CO | — | ◇ UNVERIFIED |
| SFSteel Fabricators L.l.c. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| Steelfab West, INC. | Tangent | OR | — | ◇ UNVERIFIED |
| SSSteelox Systems, INC. | Washington Court House | OH | — | ◇ UNVERIFIED |
| SPSteel Painters INC | Kelso | WA | — | ◇ UNVERIFIED |
| SPSteel Products Company | Leicester | MA | — | ◇ UNVERIFIED |
| SSSteel Service Building CO / Steel Building and Structure Mfg | Claremore | OK | — | ◇ UNVERIFIED |
| SCSteelstar Corporation | Dacono | CO | — | ◇ UNVERIFIED |
| STSteel Tank & Fabricating CO. | Mancelona | MI | — | ◇ UNVERIFIED |
| STSteel Technologies CORP | Jersey City | NJ | — | ◇ UNVERIFIED |
| SPSteeltec Products | Cleveland | OH | — | ◇ UNVERIFIED |
| SVSteel Ventures INC | Wurtland | KY | — | ◇ UNVERIFIED |
| SWSteel Warehouse of Ohio | Warren | OH | — | ◇ UNVERIFIED |
| SMSteffes Metal Products, LLC - Grand Forks West | Grand Forks | ND | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SDSteris Distribution Center | Mentor | OH | — | ◇ UNVERIFIED |
| SBSterling Boiler and Mechanical, INC. | Evansville | IN | — | ◇ UNVERIFIED |
| SCSterling Custom Sheet Metal | Magnolia | TX | — | ◇ UNVERIFIED |
| SPSterling Purchasing CORP Dba Sterling Manufacturing | Sarasota | FL | — | ◇ UNVERIFIED |
| SMSteward Machine CO. | Bainbridge | GA | — | ◇ UNVERIFIED |
| SMStewart Manufacturing Corporation | Moran | KS | — | ◇ UNVERIFIED |
| SSStiman Steel | Augusta | ME | — | ◇ UNVERIFIED |
| SLSt Lucie County International Airport | Fort Pierce | FL | — | ◇ UNVERIFIED |
| SIStoll Industries, INC. | Abbeville | SC | — | ◇ UNVERIFIED |
| SBStonehouse Building Products LLC | Florence | KY | — | ◇ UNVERIFIED |
| SPStone Products of St Cloud INC | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| SStoneycreek | Blairstown | IA | — | ◇ UNVERIFIED |
| SCStrick Corporation | Abbeville | SC | — | ◇ UNVERIFIED |
| SAStrickland Agriculture Services Incorporated | Spring Hope | NC | — | ◇ UNVERIFIED |
| SOStripmasters of Illinois | Granite City | IL | — | ◇ UNVERIFIED |
| SSStruc Steel INC | Spring Valley | CA | — | ◇ UNVERIFIED |
| SSStructural Standards INC | Sparta | MI | — | ◇ UNVERIFIED |
| SSStructural Steel of Carolina | Hickory | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Services INC Plant 2 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plant 3 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Plant 1 | Meridian | MS | — | ◇ UNVERIFIED |
| SWStruthers Wells Corp/warren | Warren | PA | — | ◇ UNVERIFIED |
| SSSts Steel INC | Schenectady | NY | — | ◇ UNVERIFIED |
| SCStuder Container Service | Tonganoxie | KS | — | ◇ UNVERIFIED |
| SWStud Welding, INC. | Centerville | TN | — | ◇ UNVERIFIED |
| SLSturdy Lantern Manufacturing | Franklin | MA | — | ◇ UNVERIFIED |
| SCStyle Crest Products | Plant City | FL | — | ◇ UNVERIFIED |
| SPSuburban Plastics CO | Elgin | IL | — | ◇ UNVERIFIED |
| SSSuburban Steel Supply Company LLC | Gahanna | OH | — | ◇ UNVERIFIED |
| SSSudden Services Inc, Distribution and Operations Center | Philadelphia | MS | — | ◇ UNVERIFIED |
| SPSummit Plastic Company | Mogadore | OH | — | ◇ UNVERIFIED |
| SPSummit Polymers Vicksburg | Vicksburg | MI | — | ◇ UNVERIFIED |
| SWSummit Window and Patio Door Spokane | Spokane | WA | — | ◇ UNVERIFIED |
| SFSunbelt Fabricator | Steele | AL | — | ◇ UNVERIFIED |
| SPSunlite Plastics | Weyers Cave | VA | — | ◇ UNVERIFIED |
| SESunset Enterprises Holdings, LLC | Port Huron | MI | — | ◇ UNVERIFIED |
| SWSunshine Welding, Scallop | Port Canaveral | FL | — | ◇ UNVERIFIED |
| SDSuperior Derrick Services LLC | New Iberia | LA | — | ◇ UNVERIFIED |
| SPSuperior Plastic Products INC | New Holland | PA | — | ◇ UNVERIFIED |
