| Connecta Corp Milling, Turning, Swiss | Indianapolis, IN | MillingTurningSwiss | - |
| D & D Automation Inc Milling, Turning, Welding, EDM | Terre Haute, IN | MillingTurningWeldingEDM | - |
| Euclid Machine Co Milling, Turning, EDM, Casting · AS9100, NADCAP | Indianapolis, IN | MillingTurningEDMCasting | AS9100, NADCAP |
| Evansville Sheet Metal Works Bending, Laser, Welding, Waterjet | Evansville, IN | BendingLaserWeldingWaterjet | - |
| Evansville Tool & Die Inc Milling, Turning, Welding, Stamping, EDM, Grinding | Evansville, IN | MillingTurningWeldingStampingEDMGrinding | - |
| Fastech Precision LLC Milling, Turning, Laser, Waterjet, Bending, Welding · ITAR, CMMC | Bedford, IN | MillingTurningLaserWaterjetBendingWelding | ITAR, CMMC |
| Flare Precision LLC Milling, Bending | Fort Wayne, IN | MillingBending | - |
| General Devices Co Inc Laser, Punching, Stamping | Indianapolis, IN | LaserPunchingStamping | - |
| Hammond Machine Works, Inc Laser, Welding, Grinding, Assembly | Hammond, IN | LaserWeldingGrindingAssembly | - |
| Highway Machine Co Inc Milling, Welding, Grinding | Princeton, IN | MillingWeldingGrinding | - |
| Holbrook Laser, Welding | Franklin, IN | LaserWelding | - |
| Independence Machine & Tool LLC Milling, Turning, Grinding | Madison, IN | MillingTurningGrinding | - |
| Indy Cast Alloys, Inc Casting | Indianapolis, IN | Casting | - |
| Kamprecision Fabrication LLC Welding | Scottsburg, IN | Welding | - |
| Kihm Metal Technologies Laser, Welding | Brazil, IN | LaserWelding | - |
| Kimura Foundry America, Inc Casting, Metal AM | Shelbyville, IN | CastingMetal AM | - |
| Magna Machine & Tool Co Inc Milling, Turning, Waterjet, Welding, EDM, Grinding | New Castle, IN | MillingTurningWaterjetWeldingEDMGrinding | - |
| Marion Manufacturing Milling, Turning, Welding, Stamping, EDM · AS9100 | West Terre Haute, IN | MillingTurningWeldingStampingEDM | AS9100 |
| Melting Point Metalworks LLC Laser, Bending, Welding | Brownsburg, IN | LaserBendingWelding | - |
| Metal Fabricators Plus LLC Laser, Waterjet, Bending, Welding | Indianapolis, IN | LaserWaterjetBendingWelding | - |
| Mofab Inc Milling, Laser, Waterjet, Bending, Welding | Anderson, IN | MillingLaserWaterjetBendingWelding | - |
| Morehead Machinery Inc Milling, Turning, Welding, EDM, Grinding | Elkhart, IN | MillingTurningWeldingEDMGrinding | - |
| Precision Fabrication, Inc. Milling, Bending, Laser, Welding, Waterjet | Fort Wayne, IN | MillingBendingLaserWeldingWaterjet | - |
| Precision Laser Services Inc Milling, Turning, Laser, Punching, Bending, Welding, Stamping, Grinding | Fort Wayne, IN | MillingTurningLaserPunchingBendingWeldingStampingGrinding | - |
| Rapid Prototyping & Engineering, Inc Milling, Turning, Waterjet, Welding, EDM, Assembly | Franklin, IN | MillingTurningWaterjetWeldingEDMAssembly | - |
| Rathburn Precision Machining Milling, Turning, Swiss, EDM | Auburn, IN | MillingTurningSwissEDM | - |
| RPM Tool Waterjet, Stamping | Princeton, IN | WaterjetStamping | - |
| South Bend Form Tool Co Milling, Turning, EDM | South Bend, IN | MillingTurningEDM | - |
| Specialty Tool & Die Company Inc Milling, Turning, Bending, Welding, Stamping, Grinding, Assembly | Kokomo, IN | MillingTurningBendingWeldingStampingGrindingAssembly | - |
| Standard Locknut, LLC Milling, Turning | Westfield, IN | MillingTurning | - |
| Steel House Bending, Welding | Indianapolis, IN | BendingWelding | - |
| Stellar Industries LLC Laser, Bending, Welding, Stamping, Finishing · ISO 9001 | Nappanee, IN | LaserBendingWeldingStampingFinishing | ISO 9001 |
| Stiverson Machine & Tool LLC Milling | Angola, IN | Milling | - |
| Sunspot Solutions LLC Welding | Lyons, IN | Welding | - |
| Swiss Labs Machine and Engineering, Inc Milling, Turning, Swiss, Finishing · ISO 9001 | Franklin, IN | MillingTurningSwissFinishing | ISO 9001 |
| Toolcraft LLC Milling | Fort Wayne, IN | Milling | - |
| Toron Manufacturing Milling, Welding | Elkhart, IN | MillingWelding | - |
| Touchdown Machining Inc Milling, Turning | Columbus, IN | MillingTurning | - |
| Triad Fabricators, LLC Milling, Turning, Bending | Evansville, IN | MillingTurningBending | - |
| Wirecut Technologies, Inc Milling, Turning, EDM, Grinding | Indianapolis, IN | MillingTurningEDMGrinding | - |
| Wolfe & Swickard Machine Co Milling, Turning · AS9100 | Indianapolis, IN | MillingTurning | AS9100 |
| Worldwide Structural Fabrication Laser | Newburgh, IN | Laser | - |
| Yardarm Fabrication Milling, Turning, Bending, Laser, Welding, Stamping | Indianapolis, IN | MillingTurningBendingLaserWeldingStamping | - |
| Aegis Sales & Engineering Inc. Milling, Turning, Bending, Stamping · ISO 9001 | Fort Wayne, IN | MillingTurningBendingStamping | ISO 9001 |
| Amg Engineering & Machining Milling, Turning, Bending, Welding, EDM · ISO 9001, AS9100, ITAR, IATF 16949 | Indianapolis, IN | MillingTurningBendingWeldingEDM | ISO 9001, AS9100, ITAR, IATF 16949 |
| CCT Enterprises, LLC Milling, Turning, Swiss, Stamping, EDM, Assembly · ISO 9001, AS9100, ITAR, IATF 16949, CMMC | Auburn, IN | MillingTurningSwissStampingEDMAssembly | ISO 9001, AS9100, ITAR, IATF 16949, CMMC |
| Checkered Past Machine Milling, Turning, Welding, Grinding · ISO 9001, CMMC | Brownsburg, IN | MillingTurningWeldingGrinding | ISO 9001, CMMC |
| Dailey's CNC Machining LLC Milling, EDM, Grinding · ISO 9001, AS9100, ITAR | Columbus, IN | MillingEDMGrinding | ISO 9001, AS9100, ITAR |
| Dual Machine Milling, Turning, Welding · ISO 9001, AS9100 | Indianapolis, IN | MillingTurningWelding | ISO 9001, AS9100 |
| Estes Design & Manufacturing Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding · ISO 13485 | Indianapolis, IN | MillingTurningLaserPunchingBendingWeldingGrinding | ISO 13485 |