| POPitts Oilfield | San Angelo | TX | — | ◇ UNVERIFIED |
| PTP-k Tool & Manufacturing Company | Santa Teresa | NM | — | ◇ UNVERIFIED |
| PEPlant Engineering and Maintenance - Oxford Machine and Fabrication | Oxford | AL | — | ◇ UNVERIFIED |
| PIPlasma-tec Inc-wayland | Wayland | MI | — | ◇ UNVERIFIED |
| PPPlastic Power Extrusions CORP | Schiller Park | IL | — | ◇ UNVERIFIED |
| PAPlumbing and Mechanical Contractors | Milwaukie | OR | — | ◇ UNVERIFIED |
| PDPneu Draulics INC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| PPPonam Precision Gages | Glendale | CA | — | ◇ UNVERIFIED |
| PLPort Logistics | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| PPPositive Prototype Industries | Fraser | MI | — | ◇ UNVERIFIED |
| PDPower Drives INC. | Erie | PA | — | ◇ UNVERIFIED |
| PCPrecise Corporation | Caryville | TN | — | ◇ UNVERIFIED |
| PMPrecision Machine Products INC | Gastonia | NC | — | ◇ UNVERIFIED |
| PTPrecision Tools and Mold LLC | Ironwood | MI | — | ◇ UNVERIFIED |
| PPPremier Pump and Power | Vancouver | WA | — | ◇ UNVERIFIED |
| PSPressed Steel Tank CO INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| PBPrice Brothers CO - Bakewell Tn | Bakewell | TN | — | ◇ UNVERIFIED |
| PMPrince Mfg CORP | Sioux City | IA | — | ◇ UNVERIFIED |
| PPProgressive Power Tech | Harmony | PA | — | ◇ UNVERIFIED |
| PProtolabs | Minneapolis | MN | — | ◇ UNVERIFIED |
| PLPrototech Laser-chesterfield | Chesterfield | MI | — | ◇ UNVERIFIED |
| PPPurolator Products INC | Dexter | MO | — | ◇ UNVERIFIED |
| RIRebb Industries | Yadkinville | NC | — | ◇ UNVERIFIED |
| RHReda Hps | Owasso | OK | — | ◇ UNVERIFIED |
| RLRedguard LLC | Halstead | KS | — | ◇ UNVERIFIED |
| RVRed Valve Company, INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| RPReelex Packaging Solutions | Patterson | NY | — | ◇ UNVERIFIED |
| RVRegional Valve Corporation of Florida | Cantonment | FL | — | ◇ UNVERIFIED |
| RMRettig Machine Shop, INC. | Redlands | CA | — | ◇ UNVERIFIED |
| RIRex Iron & Machine Products INC | Denver | CO | — | ◇ UNVERIFIED |
| RGR G Applegate Steel Company Incorporated | Saratoga | IN | — | ◇ UNVERIFIED |
| RMRiggs Machine & Fabricating INC. | Ashland | KY | — | ◇ UNVERIFIED |
| RCRiley Construction CO INC | Wytheville | VA | — | ◇ UNVERIFIED |
| RSRiverfalls Shop | River Falls | AL | — | ◇ UNVERIFIED |
| RTRiverside Tank & Manufacturing CORP | Saint Clair | MI | — | ◇ UNVERIFIED |
| RKRm Kerner CO | Erie | PA | — | ◇ UNVERIFIED |
| RBRobert Bosch Tool CORP | Heber Springs | AR | — | ◇ UNVERIFIED |
| RRobertshaw | Hanover | IL | — | ◇ UNVERIFIED |
| RIRobertshaw Industrial Products | Maryville | TN | — | ◇ UNVERIFIED |
| RIRockwell International | Carpentersville | IL | — | ◇ UNVERIFIED |
| RARoderick Arms & Tool CORP | Monett | MO | — | ◇ UNVERIFIED |
| RDRoto Die CO INC | Philadelphia | PA | — | ◇ UNVERIFIED |
| RCRoto-die Company, INC. | Alpharetta | GA | — | ◇ UNVERIFIED |
| RIRpn INC | Morristown | TN | — | ◇ UNVERIFIED |
 Rti Remmele Engineering Big Lake - Plant 40 | Big Lake | MN | — | ◇ UNVERIFIED |
| RMRushford Machine & Manufacturing CO | Rushford | NY | — | ◇ UNVERIFIED |
| RTRxc Technologies | San Jose | CA | — | ◇ UNVERIFIED |
| SESaeilo Enterprises | Worcester, City of | MA | — | ◇ UNVERIFIED |
| SISatterfield INC. | Alexander City | AL | — | ◇ UNVERIFIED |
| SDSauer Danfoss Site | Hillsboro | OR | — | ◇ UNVERIFIED |
| SISchake Ind/oil City | Oil City | PA | — | ◇ UNVERIFIED |
| SISchake Ind Seneca Fac | Seneca | PA | — | ◇ UNVERIFIED |
| SESchneider Electric | Clovis | CA | — | ◇ UNVERIFIED |
| SBSchrader Bridgeport INC | Monroe | NC | — | ◇ UNVERIFIED |
| SISetpoint Integrated Solutions INC | Monroe | LA | — | ◇ UNVERIFIED |
| SWShaw Word Ind Fabricators INC / Cleveland Paint Facility | Cleveland | OK | — | ◇ UNVERIFIED |
| SCSheffer CORP. | Morrow | GA | — | ◇ UNVERIFIED |
| SVSherwood Valve Llc/washington Plt | Washington | PA | — | ◇ UNVERIFIED |
| SESiemens Energy, INC | Geismar | LA | — | ◇ UNVERIFIED |
| SMSignet Machine INC | Grandville | MI | — | ◇ UNVERIFIED |
| SRSkymark Refuelers | Kansas City | KS | — | ◇ UNVERIFIED |
| SISlidell INC | Owatonna | MN | — | ◇ UNVERIFIED |
| SCSmc Corporation of America | Indianapolis | IN | — | ◇ UNVERIFIED |
| SESmith Equipment and Welding | Prineville | OR | — | ◇ UNVERIFIED |
| SMSmiths Machine and Welding Company INC | Brookhaven | MS | — | ◇ UNVERIFIED |
| STSnap Tite Autoclave Engr Fluid Components Div | Erie | PA | — | ◇ UNVERIFIED |
| SISnyder Industries INC | Seattle | WA | — | ◇ UNVERIFIED |
| SPSoramatic Precision Machining | Warren | MI | — | ◇ UNVERIFIED |
| SBSotek Belrix | Hamburg | NY | — | ◇ UNVERIFIED |
| SPSoutheastern Plateworks, LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| SVSouthern Valve Services INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| SISparkman Industries Plant 2 | Victoria | TX | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ UNVERIFIED |
| STSpecialty Tank & Equip CO | Jacksonville | FL | — | ◇ UNVERIFIED |
| SESpence Engineering INC | Walden | NY | — | ◇ UNVERIFIED |
| SSSpirax Sarco Mfg | Allentown | PA | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC - Millstead Way | Rochester | NY | — | ◇ UNVERIFIED |
 Standard Machine Works INC | Houston | TX | — | ◇ UNVERIFIED |
| STStandard Technologies & Machine CO | Wilmington | DE | — | ◇ UNVERIFIED |
| SIStandex International Spincraft Division | Billerica | MA | — | ◇ UNVERIFIED |
| SBStandley Batch Systems INC | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| SIStanley Industries INC | Warrensville Hts | OH | — | ◇ UNVERIFIED |
| SMStanwade Metal Products | Fowler | OH | — | ◇ UNVERIFIED |
| SFSteel Fab | Abingdon | VA | — | ◇ UNVERIFIED |
| SOSteel & O'brien Manufacturing, INC. | Arcade | NY | — | ◇ UNVERIFIED |
| SLSt. Louis Metallizing Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SCStructural Composites Ind | Pomona | CA | — | ◇ UNVERIFIED |
| SPSulzer Pumps | Portland | OR | — | ◇ UNVERIFIED |
| SPSulzer Pump Services (us) INC. | Mobile | AL | — | ◇ UNVERIFIED |
| SMSuperior Machine & Pattern, INC. | Talladega | AL | — | ◇ UNVERIFIED |
| SSSwagelok Semiconductor Services | Painesville | OH | — | ◇ UNVERIFIED |
| SSSwagelok Semiconductor Srvcs CO | Willoughby | OH | — | ◇ UNVERIFIED |
| TCTank Components Industries | Springfield | MO | — | ◇ UNVERIFIED |
| TCTankcraft CORP | Walworth | WI | — | ◇ UNVERIFIED |
| TPTank Partners | Seguin | TX | — | ◇ UNVERIFIED |
| TSTank Solutions Inc/smock Plt | Smock | PA | — | ◇ UNVERIFIED |
| TATaylor-wharton America | Baytown | TX | — | ◇ UNVERIFIED |
| TITeam Industrial Services INC. | Mobile | AL | — | ◇ UNVERIFIED |
| TGTechnetics Group Daytona | Daytona Beach | FL | — | ◇ UNVERIFIED |
| TGTed Grob Corporation | Grafton | WI | — | ◇ UNVERIFIED |
