| Banks Engineering & Machine LLC Milling, Turning, Welding, Casting, Grinding · ISO 9001 | Webb City, MO | MillingTurningWeldingCastingGrinding | ISO 9001 |
| ALC Engineered Solutions Company Milling, Turning, Swiss, EDM, Finishing · ISO 9001 | Lockwood, MO | MillingTurningSwissEDMFinishing | ISO 9001 |
| Alpha Foundry Co Milling, Turning, Casting, Finishing | Wright City, MO | MillingTurningCastingFinishing | - |
| Amincor Milling, Turning, Swiss, Laser, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing, Assembly · ISO 9001, ITAR, CMMC | Belton, MO | MillingTurningSwissLaserPunchingBendingWeldingStampingEDMGrindingFinishingAssembly | ISO 9001, ITAR, CMMC |
| Boss Metal Fabricators, Inc. Milling, Bending, Welding, Stamping | St. Louis, MO | MillingBendingWeldingStamping | - |
| C. R. Metal Products Inc Bending, Laser, Welding · ISO 9001 | St. Louis, MO | BendingLaserWelding | ISO 9001 |
| CM Fabricating Bending, Welding | Kansas City, MO | BendingWelding | - |
| Dynamix Manufacturing LLC Milling, Turning, Welding | Joplin, MO | MillingTurningWelding | - |
| Enc Products, Co Milling, Finishing | Sainte Genevieve, MO | MillingFinishing | - |
| Heritage Fabrication Inc Milling, Turning, Laser, Punching, Bending, Welding, Finishing | Sedalia, MO | MillingTurningLaserPunchingBendingWeldingFinishing | - |
| IPMI Manufacturing & Engineering Milling, Turning, Welding | Buckner, MO | MillingTurningWelding | - |
| J&D Custom Finishing | Holden, MO | Finishing | - |
| JK Pulley Co Inc Milling, Turning, Welding | Saint Louis, MO | MillingTurningWelding | - |
| John J Steuby Co Milling, Turning, Swiss, Welding, Stamping, Casting, EDM, Finishing · ISO 9001, ITAR | Hazelwood, MO | MillingTurningSwissWeldingStampingCastingEDMFinishing | ISO 9001, ITAR |
| Jones Co Machining Milling, Turning, Welding, Assembly | Hannibal, MO | MillingTurningWeldingAssembly | - |
| K C Machine Milling, Turning, Waterjet · ISO 9001, AS9100 | Excelsior Springs, MO | MillingTurningWaterjet | ISO 9001, AS9100 |
| Lawrence Fabric & Metal Structures, Inc. Welding · ISO 9001 | St. Louis, MO | Welding | ISO 9001 |
| Lowell Manufacturing Company Finishing | Pacific, MO | Finishing | - |
| Mannon Metal Works LLC Welding, Forging | Lebanon, MO | WeldingForging | - |
| Mirror Finish Polishing Welding, Casting, Grinding | Kearney, MO | WeldingCastingGrinding | - |
| Ofallon Casting LLC Casting, EDM | O Fallon, MO | CastingEDM | - |
| Planet Tool & Gear Inc Milling, Welding, Stamping, Assembly · ISO 9001, AS9100, ITAR | O Fallon, MO | MillingWeldingStampingAssembly | ISO 9001, AS9100, ITAR |
| Precision Components & Assemblies, Inc Milling, Turning, Laser, Welding, Casting, Finishing, Assembly | Saint Peters, MO | MillingTurningLaserWeldingCastingFinishingAssembly | - |
| Pro-Con Milling, Turning, Welding | Lees Summit, MO | MillingTurningWelding | - |
| Quality Stainless Production Laser, Welding | Maryland Heights, MO | LaserWelding | - |
| Rose Metal Products Inc. Bending, Laser, Welding, Stamping | Springfield, MO | BendingLaserWeldingStamping | - |
| Seyer Industries Inc Welding, EDM, Assembly | Saint Peters, MO | WeldingEDMAssembly | - |
| The Toolroom, Inc Milling, Punching, Welding, EDM | Owensville, MO | MillingPunchingWeldingEDM | - |
| Trocofab Bending, Laser, Welding, Waterjet | St. Louis, MO | BendingLaserWeldingWaterjet | - |
| Turnings Plus, LLC Turning | Washington, MO | Turning | - |
| Vff-Metal Processing LLC Milling, Turning, EDM, Grinding, Finishing | Ellisville, MO | MillingTurningEDMGrindingFinishing | - |
| VMC Precision LLC Milling, Welding, Finishing | Kansas City, MO | MillingWeldingFinishing | - |