| STSnapp Tool & Die, Inc. | El Paso | TX | — | ◇ UNVERIFIED |
| SPSng Precision Machining, INC. | Prairie Farm | WI | — | ◇ UNVERIFIED |
 Snoe INC. Machining & Welding | Caldwell | TX | — | ◇ UNVERIFIED |
| SESnowline Engineering | Shingle Springs | CA | — | ◇ UNVERIFIED |
| SESnyder Equipment Co., INC. | Nixa | MO | — | ◇ UNVERIFIED |
| SISnyder Industries INC | Seattle | WA | — | ◇ UNVERIFIED |
 Snyder Manufacturing, Inc. | Salamanca | NY | — | ◇ UNVERIFIED |
| STSobot Tool and Mfg. Co., INC. | Northbrook | IL | — | ◇ UNVERIFIED |
| SASodick America CORP. | San Jose | CA | — | ◇ UNVERIFIED |
| SPSolidification Products International, INC | North Haven | CT | — | ◇ UNVERIFIED |
| SMSollock Metal Works, LLC | Clute | TX | — | ◇ UNVERIFIED |
| SISolmac, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| SPSolmar Precision Machining LLC | Ramona | CA | — | ◇ UNVERIFIED |
| SESolo Enterprise CORP | City of Industry | CA | — | ◇ UNVERIFIED |
| STSolomon Tool & Machine LLC | Somerset | KY | — | ◇ UNVERIFIED |
| SOSolors Optional Axis INC | Elk River | MN | — | ◇ UNVERIFIED |
| SOSolors Optional Axis INC | Elk River | MN | — | ◇ UNVERIFIED |
| SOS & O Machines, INC. | Conroe | TX | — | ◇ UNVERIFIED |
| SASomec, a Divison of Snk America, INC. | Sanford | FL | — | ◇ UNVERIFIED |
| SCSomerset Consolidate/somerset | Somerset | PA | — | ◇ UNVERIFIED |
| SISomething in the Orange | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SMSondrol Machining LLC | Sunburg | MN | — | ◇ UNVERIFIED |
| STSonny Taylor Enterprises, LLC | Deland | FL | — | ◇ UNVERIFIED |
| SPSon Phi Ho and Kelly Troung Ho, Trustees of The Ho Family Living Trust Dated 09/ | Campbell | CA | — | ◇ UNVERIFIED |
| SMSooner Manufacturing | Tulsa | OK | — | ◇ UNVERIFIED |
| SPSooner Pipe Crosby Yard | Crosby | TX | — | ◇ UNVERIFIED |
| SPSooner Pipe, LLC | Montoursville | PA | — | ◇ UNVERIFIED |
| SBSorenson Bioscience INC. | Murray | UT | — | ◇ UNVERIFIED |
| SISos/aaa Iron Works INC | Mobile | AL | — | ◇ UNVERIFIED |
| SSSo Safe Equipment | Motley | MN | — | ◇ UNVERIFIED |
| SBSotek Belrix | Hamburg | NY | — | ◇ UNVERIFIED |
| SFSource Fluid Power INC Dba Vector Engineering CO | Chaska | MN | — | ◇ UNVERIFIED |
| SMSource Machine INC | Burnsville | MN | — | ◇ UNVERIFIED |
| STSource Too Machine INC. | Winnemucca | NV | — | ◇ UNVERIFIED |
| SPSouriau Paande Sequim | Sequim | WA | — | ◇ UNVERIFIED |
| SASouth Austin Workshop, LLC | Austin | TX | — | ◇ UNVERIFIED |
| SBSouth Bay Foundry INC | Santee | CA | — | ◇ UNVERIFIED |
| SCSouth Central Precision Machine, CORP | Richfield | UT | — | ◇ UNVERIFIED |
| SCSouth County Muffler | Morgan Hill | CA | — | ◇ UNVERIFIED |
| SESoutheastern Engineering Sales INC | Colonial Heights | VA | — | ◇ UNVERIFIED |
| SMSoutheastern Metal Fabricator | Rockland | MA | — | ◇ UNVERIFIED |
| SFSouth-east Fabricators INC. | Rocky Mount | NC | — | ◇ UNVERIFIED |
| SASouthern Alloy CORP | Sylacauga | AL | — | ◇ UNVERIFIED |
| SCSouthern Carbide, INC. | Shreveport | LA | — | ◇ UNVERIFIED |
| SCSouthern Cast INC. | Charlotte | NC | — | ◇ UNVERIFIED |
| SCSouthern Custom Fabrication | Carencro | LA | — | ◇ UNVERIFIED |
| SESouthern Enterprises of Southeast Louisiana, INC. | Ponchatoula | LA | — | ◇ UNVERIFIED |
| SISouthern Indiana Tool & Fabrication | Fort Branch | IN | — | ◇ UNVERIFIED |
| SISouthern Industrial Metal Fabricators INC | Smyrna | GA | — | ◇ UNVERIFIED |
| SISouthern Investment Casting CO | Blountville | TN | — | ◇ UNVERIFIED |
| SMSouthern Machine and Tool, Inc. | Georgetown | SC | — | ◇ UNVERIFIED |
| SMSouthern Metal Processing Company | Oxford | AL | — | ◇ UNVERIFIED |
| SMSouthern Metal Restoration Company, LLC | Newnan | GA | — | ◇ UNVERIFIED |
| SMSouthern Miscellaneous Columbia LLC | West Columbia | SC | — | ◇ UNVERIFIED |
| SNSouthern Nut 'n Tree Equipment | Goldthwaite | TX | — | ◇ UNVERIFIED |
| SPSouthern Perfection Fabrication Holdings, INC. | Byron | GA | — | ◇ UNVERIFIED |
| SRSouthern Rust Furniture LLC | Monroe | NC | — | ◇ UNVERIFIED |
 Southern Tool INC | Oxford | AL | — | ◇ UNVERIFIED |
| SVSouthern Vac, LLC | Grand Prairie | TX | — | ◇ UNVERIFIED |
| SFSouth Fork Industries, Inc. | Lebanon | OR | — | ◇ UNVERIFIED |
| SFSouth Fulton Machine Works, INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| SCSouth-land Carbon Products, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| SMSouthland Manufacturing INC | Douglasville | GA | — | ◇ UNVERIFIED |
| SLSouthline - Lpgs Tanforan LLC | South San Francisco | CA | — | ◇ UNVERIFIED |
| SMSouth Machine Shop | Brownsville | TX | — | ◇ UNVERIFIED |
| SMSouth Metro Wire Edm INC | Shakopee | MN | — | ◇ UNVERIFIED |
| SPSouth Plains Steel, INC. | Lubbock | TX | — | ◇ UNVERIFIED |
| SMSouthwark Metal Manufacturing CO. | Fremont | NE | — | ◇ UNVERIFIED |
| SESouthwest Engineering Company | Oklahoma City | OK | — | ◇ UNVERIFIED |
| SVSouthwest Valve, INC. | Gonzales | LA | — | ◇ UNVERIFIED |
| SSovema | Saint Louis | MO | — | ◇ UNVERIFIED |
| SCSpaid Corporation, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| SFSpanish Fork Metals | Spanish Fork | UT | — | ◇ UNVERIFIED |
| SSSpare Skid Plate | Aurora | CO | — | ◇ UNVERIFIED |
| SESparkman Enterprises LLC | Tucson | AZ | — | ◇ UNVERIFIED |
| SFSparta Foundry INC | Sparta | MI | — | ◇ UNVERIFIED |
| SSSpartan Steel LLC | Pocatello | ID | — | ◇ UNVERIFIED |
| SMSpartech Marine Industries Florida | Rockledge | FL | — | ◇ UNVERIFIED |
| SBSpec Built Systems INC | Chula Vista | CA | — | ◇ UNVERIFIED |
| SFSpecial Fab & Machine, INC. | Lexington | NC | — | ◇ UNVERIFIED |
| SFSpecial Fleet Service | Harrisonburg | VA | — | ◇ UNVERIFIED |
| SBSpeciality Bar Products Company | Blairsville | PA | — | ◇ UNVERIFIED |
| SMSpeciality Manufacturing | Nazareth | PA | — | ◇ UNVERIFIED |
| SFSpecialized Fabrication & Machine INC | Eugene | OR | — | ◇ UNVERIFIED |
| STSpecialized Turning, INC. | Peabody | MA | — | ◇ UNVERIFIED |
| SSSpecial Service Products, INC. | Carrollton | GA | — | ◇ UNVERIFIED |
| SASpecialty Applications | Ponchatoula | LA | — | ◇ UNVERIFIED |
| SDSpecialty Design & Manufacturing, INC. | Reading | PA | — | ◇ UNVERIFIED |
| SESpecialty Engineering Tool & Die, LLC | Huntington | IN | — | ◇ UNVERIFIED |
| SFSpecialty Foundry | Brockton | MA | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ UNVERIFIED |
| SLSpecialty Laminates USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SLSpecialty Laminate USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SMSpecialty Machine and CNC Inc. | Battle Ground | IN | — | ◇ UNVERIFIED |
| SPSpecialty Performance LLC | Dahlonega | GA | — | ◇ UNVERIFIED |
| SSSpecialty Steel Solutions | Kenton | OH | — | ◇ UNVERIFIED |
| SSSpecialty Support Systems, INC. | Levittown | PA | — | ◇ UNVERIFIED |
| STSpecialty Tooling & Design, LLC | Margate | FL | — | ◇ UNVERIFIED |
| SSSpecific Systems, LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| SFSpecified Fittings INC | Bellingham | WA | — | ◇ UNVERIFIED |
