| C & C Machine Inc Milling, Turning, Bending, Welding | La Crosse, WI | MillingTurningBendingWelding | - |
| Carlson Tool & Manufacturing Corp Milling, Turning, EDM, Grinding | Cedarburg, WI | MillingTurningEDMGrinding | - |
| Creative CNC LLC Milling | New Berlin, WI | Milling | - |
| Draeving Machine Tool, Inc Milling, Turning, Welding, EDM | Beloit, WI | MillingTurningWeldingEDM | - |
| Evers Manufacturing Inc Bending, Welding | Milwaukee, WI | BendingWelding | - |
| Fusion Babbitting Co, Inc Milling, Turning, Casting | Milwaukee, WI | MillingTurningCasting | - |
| H & M Machine Inc Milling, Turning, Welding, Stamping, EDM, Grinding, Finishing | Greendale, WI | MillingTurningWeldingStampingEDMGrindingFinishing | - |
| Instrument Development Corp Milling, Turning, EDM | Mukwonago, WI | MillingTurningEDM | - |
| JD Laser Inc Laser, Bending | Hartford, WI | LaserBending | - |
| JG Innovations, Inc Finishing | Janesville, WI | Finishing | - |
| Just In Time Machine Corp Milling, Turning, Welding · AS9100, ITAR | Middleton, WI | MillingTurningWelding | AS9100, ITAR |
| Lindor Tool, Inc Milling, Turning, Welding, Casting, Grinding | Saint Croix Falls, WI | MillingTurningWeldingCastingGrinding | - |
| Marinette Machine LLC Turning, Welding, Grinding, Finishing | Marinette, WI | TurningWeldingGrindingFinishing | - |
| Mat-Tech Machining Milling, Turning, Welding | Milwaukee, WI | MillingTurningWelding | - |
| Milwaukee Metal Products Co Bending, Welding, Stamping | Milwaukee, WI | BendingWeldingStamping | - |
| Nelson Numeric, LLC Milling | Waterloo, WI | Milling | - |
| PDJ Cutting and Fabricating LLC Bending, Welding | Manitowoc, WI | BendingWelding | - |
| Pmi LLC Laser, Punching, Bending, Welding, Stamping, Assembly | Bloomer, WI | LaserPunchingBendingWeldingStampingAssembly | - |
| Quality Welding Service Inc Laser, Welding | Suamico, WI | LaserWelding | - |
| Shrettech Tool & Machine LLC Milling, Turning, Welding, Grinding | Racine, WI | MillingTurningWeldingGrinding | - |
| SMT Machine & Tool Milling, Turning, Welding, Casting | Green Bay, WI | MillingTurningWeldingCasting | - |
| TBC Metalworks Bending, Laser, Welding | Green Bay, WI | BendingLaserWelding | - |
| Titletown Manufacturing LLC Milling, Welding | Green Bay, WI | MillingWelding | - |
| TMS Inc Milling, Laser, Punching, Bending, Welding, Grinding, Finishing, Assembly | New Berlin, WI | MillingLaserPunchingBendingWeldingGrindingFinishingAssembly | - |
| Triple E Machine Inc Turning, Laser, Welding, Waterjet, EDM | Appleton, WI | TurningLaserWeldingWaterjetEDM | - |
| W.e. Hoban Company Milling, Bending, Forging | Green Bay, WI | MillingBendingForging | - |
| Wilmac LLC Milling | Franklin, WI | Milling | - |
| Xact Tool Bending, Welding, Stamping | Shell Lake, WI | BendingWeldingStamping | - |