| Allis-Roller LLC Milling, Turning, Welding, Grinding, Assembly | Franklin, WI | MillingTurningWeldingGrindingAssembly | - |
| Heckel Tool & Manufacturing Corp EDM, Grinding, Finishing | Eagle, WI | EDMGrindingFinishing | - |
| Latitude Corp Milling, Waterjet, Punching, Bending, Welding, Stamping, Grinding, Finishing · AS9100 | Verona, WI | MillingWaterjetPunchingBendingWeldingStampingGrindingFinishing | AS9100 |
| Lindor Tool, Inc Milling, Turning, Welding, Casting, Grinding | Saint Croix Falls, WI | MillingTurningWeldingCastingGrinding | - |
| McCormick Industries Inc Milling, Turning, Swiss, Welding, Grinding, Finishing, Assembly · ISO 9001 | Appleton, WI | MillingTurningSwissWeldingGrindingFinishingAssembly | ISO 9001 |
| National Technologies, Inc Milling, Turning, Swiss, Grinding | Oak Creek, WI | MillingTurningSwissGrinding | - |
| Pioneer Products, Inc Milling, Turning, Casting, Grinding, Finishing, Assembly | Racine, WI | MillingTurningCastingGrindingFinishingAssembly | - |
| Shrettech Tool & Machine LLC Milling, Turning, Welding, Grinding | Racine, WI | MillingTurningWeldingGrinding | - |
| Technical Products Inc Milling, Turning, Laser, Grinding · ISO 9001 | West Bend, WI | MillingTurningLaserGrinding | ISO 9001 |
| Vargo Tool & Die Inc Milling, Turning, Welding, Grinding · ISO 9001, AS9100 | Marinette, WI | MillingTurningWeldingGrinding | ISO 9001, AS9100 |