| PMParkside Machine & Fabrication | Carthage | — | ◇ UNVERIFIED |
| PMPatriot Metal | Belton | — | ◇ UNVERIFIED |
| PPPavyer Printing Machine Works | Saint Louis | — | ◇ UNVERIFIED |
| PAPhoenix / Anjon Building Materials, Inc. | O'Fallon | — | ◇ UNVERIFIED |
| PMPhoenix Manufacturing LLC | Cole Camp | — | ◇ UNVERIFIED |
| PMPhoenix Metals Company | O Fallon | — | ◇ UNVERIFIED |
| PEPiper Enterprises LLC. | Marshall | — | ◇ UNVERIFIED |
| PPPk Products | Sedalia | — | ◇ UNVERIFIED |
| PIPlastec INC. | Mexico | — | ◇ UNVERIFIED |
| PCPowder Coatings Plus | Sikeston | — | ◇ UNVERIFIED |
| PMPrecise Machine & Manufacturing INC. | Cassville | — | ◇ UNVERIFIED |
 Precision Fabrication INC. | Silex | — | ◇ UNVERIFIED |
| PMPrecision Machine Parts INC. | Nevada | — | ◇ UNVERIFIED |
| PMPrecision Metal Works Holdings, LLC | Saint Joseph | — | ◇ UNVERIFIED |
| PMPrecision Mfg & Engrg, LLC. | Kansas City | — | ◇ UNVERIFIED |
| PLPrecisionworks LLC | Raymore | — | ◇ UNVERIFIED |
| PMPride Manufacturing* | Liberty | — | ◇ UNVERIFIED |
| PPro-con | Lees Summit | — | ◇ UNVERIFIED |
 Progressive Recovery, Inc. | Ballwin | — | ◇ UNVERIFIED |
| Progressive Recovery, Inc. | St. Louis | — | ◇ UNVERIFIED |
| Progressive Recovery, Inc. | Ballwin | — | ◇ UNVERIFIED |
| Progressive Recovery, Inc. | Ballwin | — | ◇ UNVERIFIED |
| PMPro Metals, LLC | Kansas City | — | ◇ UNVERIFIED |
| PMPylate's Machine & Welding Works | Caruthersville | — | ◇ UNVERIFIED |
| QSQuality Screw Machine Products INC. | Saint Louis | — | ◇ UNVERIFIED |
| RDRapid Development Services, INC. | Saint Louis | — | ◇ UNVERIFIED |
| RIRavensberg, INC. | Saint Louis | — | ◇ UNVERIFIED |
| RSRaw Sheet Metal, LLC. | Saint Louis | — | ◇ UNVERIFIED |
| RMRaytec Manufacturing LLC | Memphis | — | ◇ UNVERIFIED |
| RSRebar Specialist INC. | Saint Louis | — | ◇ UNVERIFIED |
| RTReiss Tool & Machine INC. | Fenton | — | ◇ UNVERIFIED |
| RFReliable Fab and Manufacturing INC. | O Fallon | — | ◇ UNVERIFIED |
| RRRidge Runner Outdoors llc | Maryland Heights | — | ◇ UNVERIFIED |
| RFRiver Fleets INC. | Charleston | — | ◇ UNVERIFIED |
| RWRK Waterjet LLC | Gray Summit | — | ◇ UNVERIFIED |
| RIR.m. Industries, INC. | Purdy | — | ◇ UNVERIFIED |
| RTRocky Top Machine | West Plains | — | ◇ UNVERIFIED |
| RMRonson Machine & Manufacturing, INC. | Independence | — | ◇ UNVERIFIED |
| RWRon White Industries, Inc.* | Willow Springs | — | ◇ UNVERIFIED |
 R & S Machining Inc. | St. Louis | — | ◇ UNVERIFIED |
| RCRussco Custom Fabrications, INC. | Kansas City | — | ◇ UNVERIFIED |
| SSafe-fleet | Belton | — | ◇ UNVERIFIED |
| SCSaint Charles Tool & Die | Saint Charles | — | ◇ UNVERIFIED |
| SMSchaffner Machine CO. | Berkeley | — | ◇ UNVERIFIED |
| SMSchaffner Machine Company | Saint Louis | — | ◇ UNVERIFIED |
| SCSchefers Construction Services INC. | Grain Valley | — | ◇ UNVERIFIED |
| SMSchmidt-riffer Metalcrafts, INC. | Kansas City | — | ◇ UNVERIFIED |
| SVSchroeger Ventures, INC | Kansas City | — | ◇ UNVERIFIED |
 Schwoeppe Machine & Tool | Marthasville | — | ◇ UNVERIFIED |
| SSScs Sheet Metal | Grain Valley | — | ◇ UNVERIFIED |
