| A & P Fabricating Solutions, LLC Milling, Turning, Bending, Laser, Welding | Appleton, WI | MillingTurningBendingLaserWelding | - |
| Allis-Roller LLC Milling, Turning, Welding, Grinding, Assembly | Franklin, WI | MillingTurningWeldingGrindingAssembly | - |
| Alpine Conglomerate, LLC Milling, Welding · ISO 9001, AS9100, ITAR, NADCAP, CMMC | Bloomer, WI | MillingWelding | ISO 9001, AS9100, ITAR, NADCAP, CMMC |
| Asc Machining Milling | Mequon, WI | Milling | - |
| Basin Precision Machining LLC Milling, Turning, Grinding · ISO 9001 | Jefferson, WI | MillingTurningGrinding | ISO 9001 |
| Baum Machine Inc Milling, Turning, Welding | Appleton, WI | MillingTurningWelding | - |
| Beloit Precision, Inc Milling, Turning, Stamping · ISO 9001 | Beloit, WI | MillingTurningStamping | ISO 9001 |
| Bothe Associates Inc Milling, Turning, Swiss, Stamping · ISO 9001 | Kenosha, WI | MillingTurningSwissStamping | ISO 9001 |
| Centerline Machine, LLC Milling, Turning, Waterjet, Bending, Welding, Finishing, Assembly · ISO 9001, ITAR | Waupaca, WI | MillingTurningWaterjetBendingWeldingFinishingAssembly | ISO 9001, ITAR |
| D & H Industries Inc Milling, Turning, Laser, Bending, Welding, Stamping, Grinding, Finishing · ISO 9001, ITAR | Oconomowoc, WI | MillingTurningLaserBendingWeldingStampingGrindingFinishing | ISO 9001, ITAR |
| Draeving Machine Tool, Inc Milling, Turning, Welding, EDM | Beloit, WI | MillingTurningWeldingEDM | - |
| Etek Tool & Manufacturing LLC Milling, Turning, Swiss, Welding, Finishing, Assembly · ISO 9001 | Cedarburg, WI | MillingTurningSwissWeldingFinishingAssembly | ISO 9001 |
| Evergreen Tool Company Inc Milling, Turning, Swiss | Peshtigo, WI | MillingTurningSwiss | - |
| Hastreiter Industries Corp Milling, Turning, Laser, Bending, Welding, Grinding, Finishing · ISO 9001, ITAR | Marshfield, WI | MillingTurningLaserBendingWeldingGrindingFinishing | ISO 9001, ITAR |
| Impact Machine LLC Milling, Turning · ISO 9001 | Kaukauna, WI | MillingTurning | ISO 9001 |
| JBC Machine Inc Milling, Turning, Welding, Finishing | Hortonville, WI | MillingTurningWeldingFinishing | - |
| Just In Time Machine Corp Milling, Turning, Welding · AS9100, ITAR | Middleton, WI | MillingTurningWelding | AS9100, ITAR |
| KLM Machining, Inc Milling, Turning, Welding, Finishing | Sussex, WI | MillingTurningWeldingFinishing | - |
| 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 | - |
| Machining Concepts LLC Milling, Turning, Swiss, Assembly · ISO 9001, NADCAP | Germantown, WI | MillingTurningSwissAssembly | ISO 9001, NADCAP |
| Mat-Tech Machining Milling, Turning, Welding | Milwaukee, WI | MillingTurningWelding | - |
| McCormick Industries Inc Milling, Turning, Swiss, Welding, Grinding, Finishing, Assembly · ISO 9001 | Appleton, WI | MillingTurningSwissWeldingGrindingFinishingAssembly | ISO 9001 |
| Mitotec Precision, Inc Milling, Turning, Swiss, Assembly · ISO 9001 | Necedah, WI | MillingTurningSwissAssembly | ISO 9001 |
| Moria Manufacturing LLC Milling, Turning, Finishing | Monona, WI | MillingTurningFinishing | - |
| New Tech Metals Milling, Turning, Laser, Punching, Bending, Welding, Stamping, Finishing, Assembly · ISO 9001, AS9100, ITAR, IATF 16949, CMMC | Green Bay, WI | MillingTurningLaserPunchingBendingWeldingStampingFinishingAssembly | ISO 9001, AS9100, ITAR, IATF 16949, CMMC |
| OMS Precision Machining Milling, Turning, Swiss, Casting, Grinding, Finishing · ISO 9001, ITAR | Oshkosh, WI | MillingTurningSwissCastingGrindingFinishing | ISO 9001, ITAR |
| Owens Industries, Inc. Milling, Turning, Welding, EDM, Casting, Metal AM · ISO 9001, AS9100 | Oak Creek, WI | MillingTurningWeldingEDMCastingMetal AM | ISO 9001, AS9100 |
| Pioneer Products, Inc Milling, Turning, Casting, Grinding, Finishing, Assembly | Racine, WI | MillingTurningCastingGrindingFinishingAssembly | - |
| 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 |
| Ram Tool Inc Milling, Turning, Welding, Casting, EDM, Grinding · ISO 9001, ITAR | Grafton, WI | MillingTurningWeldingCastingEDMGrinding | ISO 9001, ITAR |
| RB Industrial Manufacturer LLC Milling, Swiss, Grinding | Racine, WI | MillingSwissGrinding | - |
| SMT Machine & Tool Milling, Turning, Welding, Casting | Green Bay, WI | MillingTurningWeldingCasting | - |
| Technical Products Inc Milling, Turning, Laser, Grinding · ISO 9001 | West Bend, WI | MillingTurningLaserGrinding | ISO 9001 |
| TMS Inc Milling, Laser, Punching, Bending, Welding, Grinding, Finishing, Assembly | New Berlin, WI | MillingLaserPunchingBendingWeldingGrindingFinishingAssembly | - |
| Ultra Tool and Mfg., Inc Milling, Turning, Laser, Bending, Welding, Stamping, EDM, Finishing · ISO 9001, ITAR | Germantown, WI | MillingTurningLaserBendingWeldingStampingEDMFinishing | ISO 9001, ITAR |
| Wisconsin Metal Fab LLC Milling, Laser, Punching, Bending, Welding | Chippewa Falls, WI | MillingLaserPunchingBendingWelding | - |