 Miller Welding & Machine CO | Brookville | PA | — | ◇ UNVERIFIED |
| MFMountaineer Fabricators INC | Nitro | WV | — | ◇ UNVERIFIED |
| MMMull Machine CO | Wheeling | WV | — | ◇ UNVERIFIED |
| MPMulti-spec Painting INC | Gardena | CA | — | ◇ UNVERIFIED |
| MGMurray Grinding-dearborn Hgts | Dearborn Heights | MI | — | ◇ UNVERIFIED |
| NANapa Auto Parts Machine Shop | Plymouth | IN | — | ◇ UNVERIFIED |
| NMNash Manufacturing & Grinding Services | Springfield | MA | — | ◇ UNVERIFIED |
| NFNatl Fabricators & Mach/north East Plt | North East | PA | — | ◇ UNVERIFIED |
| NINeo Industries (weirton) INC. | Weirton | WV | — | ◇ UNVERIFIED |
| NENew England Expert Technologies Ne Xt | Greenfield | MA | — | ◇ UNVERIFIED |
| NWNfm Welding Engineers INC | Massillon | OH | — | ◇ UNVERIFIED |
| NENorthern Engineering Company LLC | Superior | WI | — | ◇ UNVERIFIED |
| NPNorth Penn Area 6 | Lansdale | PA | — | ◇ UNVERIFIED |
| NMNrg Maintenance Services | Houston | TX | — | ◇ UNVERIFIED |
| OLOpen Loop Energy - Nichols Facility | Safford | AZ | — | ◇ UNVERIFIED |
| OOOrchid Orthopedics Solutions | Santa Ana | CA | — | ◇ UNVERIFIED |
| OSOtten Screw Products Co-otten Screw Products CO | Saint Louis | MO | — | ◇ UNVERIFIED |
| PMPadnos Manufacturing INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| PMPalfinger Marine USA INC | Portsmouth | VA | — | ◇ UNVERIFIED |
| PAPall Aeropower CORP Fort Myers | Fort Myers | FL | — | ◇ UNVERIFIED |
| PMParagon Machine Company, INC. | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Hpd | Marysville | OH | — | ◇ UNVERIFIED |
| PEPayne Engineering & Fabrications | Canton | MA | — | ◇ UNVERIFIED |
| PTPeacock Tool & Engineering | Spring Valley | CA | — | ◇ UNVERIFIED |
| PKPelletizer Knives | Houston | TX | — | ◇ UNVERIFIED |
| PIPemco INC | Pascagoula | MS | — | ◇ UNVERIFIED |
| PTPems Tool & Machine INC | Little Falls | NY | — | ◇ UNVERIFIED |
| PTPike Tool & Grinding Incorporated | Colorado Springs | CO | — | ◇ UNVERIFIED |
| PTP-k Tool & Manufacturing Company | Santa Teresa | NM | — | ◇ UNVERIFIED |
| PEPlant Engineering and Maintenance - Oxford Machine and Fabrication | Oxford | AL | — | ◇ UNVERIFIED |
| PPPlastic Power Extrusions CORP | Schiller Park | IL | — | ◇ UNVERIFIED |
| PAPlumbing and Mechanical Contractors | Milwaukie | OR | — | ◇ UNVERIFIED |
| PPPonam Precision Gages | Glendale | CA | — | ◇ UNVERIFIED |
| PLPort Logistics | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| PPPositive Prototype Industries | Fraser | MI | — | ◇ UNVERIFIED |
| PMPrecision Machine Products INC | Gastonia | NC | — | ◇ UNVERIFIED |
| PTPrecision Tools and Mold LLC | Ironwood | MI | — | ◇ 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 |
| RPReelex Packaging Solutions | Patterson | NY | — | ◇ UNVERIFIED |
| RMRettig Machine Shop, INC. | Redlands | CA | — | ◇ UNVERIFIED |
| RIRex Iron & Machine Products INC | Denver | CO | — | ◇ UNVERIFIED |
| RMRiggs Machine & Fabricating INC. | Ashland | KY | — | ◇ UNVERIFIED |
| RSRiverfalls Shop | River Falls | AL | — | ◇ UNVERIFIED |
| RKRm Kerner CO | Erie | PA | — | ◇ 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 |
| SESiemens Energy, INC | Geismar | LA | — | ◇ UNVERIFIED |
| SMSignet Machine INC | Grandville | MI | — | ◇ UNVERIFIED |
| SMSmiths Machine and Welding Company INC | Brookhaven | MS | — | ◇ UNVERIFIED |
| SISnyder Industries INC | Seattle | WA | — | ◇ UNVERIFIED |
| SPSoramatic Precision Machining | Warren | MI | — | ◇ UNVERIFIED |
| SBSotek Belrix | Hamburg | NY | — | ◇ UNVERIFIED |
| SISparkman Industries Plant 2 | Victoria | TX | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | — | ◇ 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 |
| SIStanley Industries INC | Warrensville Hts | OH | — | ◇ UNVERIFIED |
| SLSt. Louis Metallizing Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SPSulzer Pumps | Portland | OR | — | ◇ UNVERIFIED |
| SPSulzer Pump Services (us) INC. | Mobile | AL | — | ◇ UNVERIFIED |
| SMSuperior Machine & Pattern, INC. | Talladega | AL | — | ◇ UNVERIFIED |
| TITeam Industrial Services INC. | Mobile | AL | — | ◇ UNVERIFIED |
| TGTechnetics Group Daytona | Daytona Beach | FL | — | ◇ UNVERIFIED |
| TGTed Grob Corporation | Grafton | WI | — | ◇ UNVERIFIED |
| TTek-am | Springfield | VA | — | ◇ UNVERIFIED |
| TSTell Steel | Long Beach | CA | — | ◇ UNVERIFIED |
| TCTimkensteel CORP | Houston | TX | — | ◇ UNVERIFIED |
| TSTinco Sheet Metal INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| TITotal Industries | South Bend | IN | — | ◇ UNVERIFIED |
| TBToufayan Bakery INC | Ridgefield | NJ | — | ◇ UNVERIFIED |
| TTTowne Technologies INC | Somerville | NJ | — | ◇ UNVERIFIED |
| TTTregets Tool & Engineering | Jackson | MI | — | ◇ UNVERIFIED |
| TATri Angle Metal Fab | Milton | VT | — | ◇ UNVERIFIED |
| TMTrident Machine Technologies, INC. | Hammond | IN | — | ◇ UNVERIFIED |
| TMTri-matics Mfg | Harrison Township | MI | — | ◇ UNVERIFIED |
| TFTst Fab & Machine, LLC | Chesapeake | VA | — | ◇ UNVERIFIED |
| UCUniversal Compression INC | Tulsa | OK | — | ◇ UNVERIFIED |
| UNUsag Natick Ssc | Natick | MA | — | ◇ UNVERIFIED |
| USUtility Specialized Metals | Sun Valley | CA | — | ◇ UNVERIFIED |
| VWValve & Wellhead Specialists | Scott | LA | — | ◇ UNVERIFIED |
| WNWartsila N.a. INC. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| WTWasatch Tool & Die, INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| WMWcm Manufacturing LLC | Cypress | CA | — | ◇ UNVERIFIED |
| WEWeedon Engineering Co, INC | Jacksonville | FL | — | ◇ UNVERIFIED |
| WIWestern Industrial Machine | Westminster | MD | — | ◇ UNVERIFIED |
| WRWhite Racker CO INC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| WNWieland National Bronze | Roseville | MI | — | ◇ UNVERIFIED |
