| 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 |
| SSonetronics | W Belmar | NJ | — | ◇ 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, LLC | Montoursville | PA | — | ◇ UNVERIFIED |
| SBSotek Belrix | Hamburg | NY | — | ◇ UNVERIFIED |
| SISoundz, INC. | Daytona Beach | FL | — | ◇ 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 |
| SCSouth Central Precision Machine, CORP | Richfield | UT | — | ◇ UNVERIFIED |
| SCSouth County Muffler | Morgan Hill | CA | — | ◇ UNVERIFIED |
| SFSouth-east Fabricators INC. | Rocky Mount | NC | — | ◇ UNVERIFIED |
| SCSouthern Carbide, INC. | Shreveport | LA | — | ◇ UNVERIFIED |
| SMSouthern Machine and Tool, Inc. | Georgetown | SC | — | ◇ UNVERIFIED |
| SNSouthern Nut 'n Tree Equipment | Goldthwaite | TX | — | ◇ UNVERIFIED |
| SFSouth Fork Industries, Inc. | Lebanon | OR | — | ◇ UNVERIFIED |
| SFSouth Fulton Machine Works, INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| SMSouth Machine Shop | Brownsville | TX | — | ◇ UNVERIFIED |
| SMSouth Metro Wire Edm INC | Shakopee | MN | — | ◇ UNVERIFIED |
| SVSouthwest Valve, INC. | Gonzales | LA | — | ◇ UNVERIFIED |
| SSovema | Saint Louis | MO | — | ◇ UNVERIFIED |
| SLSparkos Labs INC | Westminster | CO | — | ◇ UNVERIFIED |
| SSSpecial Service Products, INC. | Carrollton | GA | — | ◇ UNVERIFIED |
| SDSpecialty Design & Manufacturing, INC. | Reading | PA | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ UNVERIFIED |
| SLSpecialty Laminates USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SLSpecialty Laminate USA INC | Eugene | OR | — | ◇ UNVERIFIED |
| SSSpecialty Steel Solutions | Kenton | OH | — | ◇ UNVERIFIED |
| STSpecialty Tooling & Design, LLC | Margate | FL | — | ◇ UNVERIFIED |
| SISpectralytics INC | Dassel | MN | — | ◇ UNVERIFIED |
| SISpectrapower INC | Livermore | CA | — | ◇ UNVERIFIED |
| SESpectrol Electronics CORP | Ontario | CA | — | ◇ UNVERIFIED |
| SBSpectrum Brands INC | Fennimore | WI | — | ◇ UNVERIFIED |
| SPSpectrum Prototype INC | Hillsboro | OR | — | ◇ UNVERIFIED |
| SMSpeed Machine CORP. | Cutler Bay | FL | — | ◇ UNVERIFIED |
| SMSpeed Machine Inc. | Bridgeview | IL | — | ◇ UNVERIFIED |
| SISpidertrax, Inc. | Loveland | CO | — | ◇ UNVERIFIED |
| SNSpiers New Technologies Annex B | Oklahoma City | OK | — | ◇ UNVERIFIED |
| SWSpindle Works Precision LLC | Campbell | NY | — | ◇ UNVERIFIED |
| SRSpirit Racing LLC | Tunkhannock | PA | — | ◇ UNVERIFIED |
| SMSP Machining Company | Titusville | FL | — | ◇ UNVERIFIED |
| SMSpreng Machine CO. INC. | Saxonburg | PA | — | ◇ UNVERIFIED |
| SASpring Air Products International, INC | West Melbourne | FL | — | ◇ UNVERIFIED |
| SCSpring Creek Golf & Country Club | Ripon | CA | — | ◇ UNVERIFIED |
| SMSpringdale Machine & Gear, Inc. | Holyoke | MA | — | ◇ UNVERIFIED |
| SSSps Spindle Parts and Service LLC | Goffstown | NH | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC - Millstead Way | Rochester | NY | — | ◇ UNVERIFIED |
| SOSquare One Engineering LLC | Tallmadge | OH | — | ◇ UNVERIFIED |
| SESquires Electronics INC | Cornelius | OR | — | ◇ UNVERIFIED |
| SRS R Machining-Properties, LLC | Norco | CA | — | ◇ UNVERIFIED |
| SSS - S Engineering INC Dba Specialty Tool - Engr | Eden Prairie | MN | — | ◇ UNVERIFIED |
| SSS & S Machine and Design | Akron | OH | — | ◇ UNVERIFIED |
| SSS & S Machining & Fabrication, INC | Groesbeck | TX | — | ◇ UNVERIFIED |
| SISsp International, INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| SCSstc - Cameron International Corporation | Shreveport | LA | — | ◇ UNVERIFIED |
| SSS & S Tool Inc | Conneaut | OH | — | ◇ UNVERIFIED |
| SEStacked Energy INC | San Jose | CA | — | ◇ UNVERIFIED |
| SSStadco Standard Tool & Die CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| SDStaerk Design LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| SAStainless Aesthetics Inc. | Paradise | CA | — | ◇ UNVERIFIED |
| SMStainless Manufacturing and Design, INC. | Brandon | WI | — | ◇ UNVERIFIED |
 Standard Machine CO | Minneapolis | MN | — | ◇ UNVERIFIED |
| Standard Machine & Tool, INC. | Bristol | CT | — | ◇ UNVERIFIED |
| Standard Machine Works INC | Houston | TX | — | ◇ UNVERIFIED |
| SPStandard Precision Grinding CO. | Lansing | IL | — | ◇ UNVERIFIED |
| STStandard Technologies & Machine CO | Wilmington | DE | — | ◇ UNVERIFIED |
| SIStandex International Spincraft Division | Billerica | MA | — | ◇ UNVERIFIED |
| SIStanton Industrial LLC | Saint George | UT | — | ◇ UNVERIFIED |
| SRStanton Racing, INC. | Nicholasville | KY | — | ◇ UNVERIFIED |
| SMStark's Metal Works Inc. | Menomonie | WI | — | ◇ UNVERIFIED |
| SIStarled INC | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| SMStar Machine Co. Inc. | Nashua | NH | — | ◇ UNVERIFIED |
| SMStar Manufacturing INC | Blaine | MN | — | ◇ UNVERIFIED |
| SEStarplus Energy LLC | Kokomo | IN | — | ◇ UNVERIFIED |
| SLStarting Line Products, INC. | Idaho Falls | ID | — | ◇ UNVERIFIED |
| SCSt. Charles Stamping, INC. | Saint Charles | IL | — | ◇ UNVERIFIED |
| SCST Company, LLC | Angola | IN | — | ◇ UNVERIFIED |
| STSteam Turbine Alternative Resources | Marion | OH | — | ◇ UNVERIFIED |
| SPSteel Plate L.l.c. | Tallmadge | OH | — | ◇ UNVERIFIED |
| SMStellar Machine Incorporated | Kingston | PA | — | ◇ UNVERIFIED |
| SMStellex Microwave Systems INC | Palo Alto | CA | — | ◇ UNVERIFIED |
| SMStenerson Machine INC | Red Wing | MN | — | ◇ UNVERIFIED |
| SJStephen J Vandehey | Cornelius | OR | — | ◇ UNVERIFIED |
| SSStephen Shatas | Santa Clara | CA | — | ◇ UNVERIFIED |
| SMStephens Machine Incorporated | Kokomo | IN | — | ◇ UNVERIFIED |
 Sterling Precision LLC Dba Vitesse Systems Clinton Ma | Clinton | MA | — | ◇ UNVERIFIED |
| SMStern Metals INC | Mount Vernon | NY | — | ◇ UNVERIFIED |
| SCStevenson & CO | Baltimore | MD | — | ◇ UNVERIFIED |
| SRStiles Real Estate, LLC | Addison | IL | — | ◇ UNVERIFIED |
| SIStillion Industries, Inc. | Dexter | MI | — | ◇ UNVERIFIED |
| SIStillion Industries, Inc. | Dexter | MI | — | ◇ UNVERIFIED |
 Stingray Manufacturing, LLC | Brentwood | NH | — | ◇ UNVERIFIED |
| SCStion Corporation | San Jose | CA | — | ◇ 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 |
