| Bridan Mfg Inc Milling, Turning, EDM · ISO 9001 | Kenosha, WI | MillingTurningEDM | ISO 9001 |
| Carlson Tool & Manufacturing Corp Milling, Turning, EDM, Grinding | Cedarburg, WI | MillingTurningEDMGrinding | - |
| Draeving Machine Tool, Inc Milling, Turning, Welding, EDM | Beloit, WI | MillingTurningWeldingEDM | - |
| Fox Valley Tool & Die Inc Milling, Turning, Waterjet, Stamping, EDM, Grinding | Kaukauna, WI | MillingTurningWaterjetStampingEDMGrinding | - |
| Gromax Precision Die & Mfg., Inc Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing, Assembly · ISO 9001, ITAR | Germantown, WI | PunchingBendingWeldingStampingEDMGrindingFinishingAssembly | ISO 9001, ITAR |
| Heckel Tool & Manufacturing Corp EDM, Grinding, Finishing | Eagle, WI | EDMGrindingFinishing | - |
| Infinity EDM, LLC Milling, Turning, EDM, Grinding · ISO 9001 | Jackson, WI | MillingTurningEDMGrinding | ISO 9001 |
| J&J Machine Milling, EDM | Appleton, WI | MillingEDM | - |
| Owens Industries, Inc. Milling, Turning, Welding, EDM, Casting, Metal AM · ISO 9001, AS9100 | Oak Creek, WI | MillingTurningWeldingEDMCastingMetal AM | ISO 9001, AS9100 |
| Prosource Trace-A-Matic LLC Milling, Turning, Welding, Casting, EDM, Grinding, Assembly · ISO 9001, AS9100, ITAR | Brookfield, WI | MillingTurningWeldingCastingEDMGrindingAssembly | ISO 9001, AS9100, ITAR |
| Prototek Digital ManufacturingVerified Milling, Turning, Laser, Waterjet, Bending, Welding, EDM, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP, CMMC | Menomonie, WI | MillingTurningLaserWaterjetBendingWeldingEDMFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP, CMMC |