| JG Innovations, Inc Finishing | Janesville, WI | Finishing | - |
| Johnson Brass & Machine Foundry Inc Casting, Finishing | Saukville, WI | CastingFinishing | - |
| Latitude Corp Milling, Waterjet, Punching, Bending, Welding, Stamping, Grinding, Finishing · AS9100 | Verona, WI | MillingWaterjetPunchingBendingWeldingStampingGrindingFinishing | AS9100 |
| Moria Manufacturing LLC Milling, Turning, Finishing | Monona, WI | MillingTurningFinishing | - |
| Northern Gear, LLC Casting, Finishing | Muskego, WI | CastingFinishing | - |
| Pioneer Products, Inc Milling, Turning, Casting, Grinding, Finishing, Assembly | Racine, WI | MillingTurningCastingGrindingFinishingAssembly | - |
| Steel-Craft Corp. of Hartford Milling, Laser, Punching, Bending, Welding, Stamping, Finishing | Hartford, WI | MillingLaserPunchingBendingWeldingStampingFinishing | - |
| Superior Grinding Corp Milling, Turning, Grinding, Finishing | Antigo, WI | MillingTurningGrindingFinishing | - |
| Unit Drop Forge Co Inc Milling, Welding, Forging, Finishing | Milwaukee, WI | MillingWeldingForgingFinishing | - |
| W.e. Hoban Company Milling, Bending, Forging | Green Bay, WI | MillingBendingForging | - |
| 3Up Metal Works Bending, Welding, Waterjet | Milwaukee, WI | BendingWeldingWaterjet | - |
| 5 Point Fabrication Milling, Bending, Laser, Welding | Green Bay, WI | MillingBendingLaserWelding | - |
| A & P Fabricating Solutions, LLC Milling, Turning, Bending, Laser, Welding | Appleton, WI | MillingTurningBendingLaserWelding | - |
| Allis-Roller LLC Milling, Turning, Welding, Grinding, Assembly | Franklin, WI | MillingTurningWeldingGrindingAssembly | - |
| Apple Steel Rule Die Co Inc Laser | Milwaukee, WI | Laser | - |
| Carlson Tool & Manufacturing Corp Milling, Turning, EDM, Grinding | Cedarburg, WI | MillingTurningEDMGrinding | - |
| Centerline Machine, LLC Milling, Turning, Waterjet, Bending, Welding, Finishing, Assembly · ISO 9001, ITAR | Waupaca, WI | MillingTurningWaterjetBendingWeldingFinishingAssembly | ISO 9001, ITAR |
| Draeving Machine Tool, Inc Milling, Turning, Welding, EDM | Beloit, WI | MillingTurningWeldingEDM | - |
| Evergreen Tool Company Inc Milling, Turning, Swiss | Peshtigo, WI | MillingTurningSwiss | - |
| Fox Valley Metal Fab, Inc. Milling, Bending, Welding | Appleton, WI | MillingBendingWelding | - |
| Fox Valley Tool & Die Inc Milling, Turning, Waterjet, Stamping, EDM, Grinding | Kaukauna, WI | MillingTurningWaterjetStampingEDMGrinding | - |
| Fusion Babbitting Co, Inc Milling, Turning, Casting | Milwaukee, WI | MillingTurningCasting | - |
| Instrument Development Corp Milling, Turning, EDM | Mukwonago, WI | MillingTurningEDM | - |
| Just In Time Machine Corp Milling, Turning, Welding · AS9100, ITAR | Middleton, WI | MillingTurningWelding | AS9100, ITAR |
| KF Precision Honing LLC Milling, Grinding · ITAR | Antigo, WI | MillingGrinding | ITAR |
| KLH Industries Inc Milling, Turning, Waterjet, Bending, Welding, EDM, Grinding, Finishing · ISO 9001, AS9100, ITAR, NADCAP | Germantown, WI | MillingTurningWaterjetBendingWeldingEDMGrindingFinishing | ISO 9001, AS9100, ITAR, NADCAP |
| Lindor Tool, Inc Milling, Turning, Welding, Casting, Grinding | Saint Croix Falls, WI | MillingTurningWeldingCastingGrinding | - |
| Metal Products Inc Milling, Turning, Waterjet, Bending, Welding, EDM, Grinding | Appleton, WI | MillingTurningWaterjetBendingWeldingEDMGrinding | - |
| Metaltek International Corp Milling, Welding, Casting, Metal AM · NADCAP | Waukesha, WI | MillingWeldingCastingMetal AM | NADCAP |
| Milwaukee Metal Products Co Bending, Welding, Stamping | Milwaukee, WI | BendingWeldingStamping | - |
| Nelson Numeric, LLC Milling | Waterloo, WI | Milling | - |
| 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 |
| Perma-Brass, Inc Milling, Turning, Swiss, Finishing · ISO 9001, AS9100 | Plymouth, WI | MillingTurningSwissFinishing | ISO 9001, AS9100 |
| Precision Die Systems Corp Milling, Welding, Grinding | Chippewa Falls, WI | MillingWeldingGrinding | - |
| Pressed Metal Co Welding, Stamping | Waukesha, WI | WeldingStamping | - |
| Reader Precision Solutions, Inc Milling, Turning, Swiss | Elkhorn, WI | MillingTurningSwiss | - |
| Savannah Company, LLC Milling | Waunakee, WI | Milling | - |
| Shrettech Tool & Machine LLC Milling, Turning, Welding, Grinding | Racine, WI | MillingTurningWeldingGrinding | - |
| SMT Machine & Tool Milling, Turning, Welding, Casting | Green Bay, WI | MillingTurningWeldingCasting | - |
| Target Marketing Associates, Inc Welding | Sturgeon Bay, WI | Welding | - |
| TBC Metalworks Bending, Laser, Welding | Green Bay, WI | BendingLaserWelding | - |
| Titletown Manufacturing LLC Milling, Welding | Green Bay, WI | MillingWelding | - |
| Toolrite Mfg Co., Inc Turning, Grinding | New Berlin, WI | TurningGrinding | - |
| Wisconsin Metal Fab LLC Milling, Laser, Punching, Bending, Welding | Chippewa Falls, WI | MillingLaserPunchingBendingWelding | - |
| Xact Tool Bending, Welding, Stamping | Shell Lake, WI | BendingWeldingStamping | - |
| Ace Manufacturing Inc Milling, Turning · ISO 9001 | Green Bay, WI | MillingTurning | ISO 9001 |
| Bridan Mfg Inc Milling, Turning, EDM · ISO 9001 | Kenosha, WI | MillingTurningEDM | ISO 9001 |
| D & S Machine Service Inc Milling, Turning, Welding · ISO 9001 | Luxemburg, WI | MillingTurningWelding | ISO 9001 |
| Herker Industries Inc Milling, Turning, Swiss, Welding, Assembly · ISO 9001 | Menomonee Falls, WI | MillingTurningSwissWeldingAssembly | ISO 9001 |
| Infinity EDM, LLC Milling, Turning, EDM, Grinding · ISO 9001 | Jackson, WI | MillingTurningEDMGrinding | ISO 9001 |