| Defelice Engineering, Inc Milling, Turning, Bending, Welding, Casting, Grinding | Mooresville, IN | MillingTurningBendingWeldingCastingGrinding | - |
| IFT Worldwide Milling, Stamping, Finishing | South Bend, IN | MillingStampingFinishing | - |
| Rhinehart Development Corp Laser, Punching, Bending, Welding, Stamping, Finishing · ISO 9001 | Spencerville, IN | LaserPunchingBendingWeldingStampingFinishing | ISO 9001 |
| General Devices Co Inc Laser, Punching, Stamping | Indianapolis, IN | LaserPunchingStamping | - |
| Modern Forge Indiana LLC Turning, Welding, Casting, Forging, Assembly · ISO 9001, AS9100, NADCAP | Merrillville, IN | TurningWeldingCastingForgingAssembly | ISO 9001, AS9100, NADCAP |
| Progress Defense Corporation Assembly · ISO 9001 | Schererville, IN | Assembly | ISO 9001 |
| Loughmiller Machine, Tool & Design Milling, Turning, Waterjet, Welding, EDM, Finishing | Loogootee, IN | MillingTurningWaterjetWeldingEDMFinishing | - |
| Olson Custom Designs LLC Milling, Turning, Bending, Welding · ISO 9001, ITAR, ISO 13485 | Indianapolis, IN | MillingTurningBendingWelding | ISO 9001, ITAR, ISO 13485 |
| Estes Design & Manufacturing Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding · ISO 13485 | Indianapolis, IN | MillingTurningLaserPunchingBendingWeldingGrinding | ISO 13485 |
| Independence Machine & Tool LLC Milling, Turning, Grinding | Madison, IN | MillingTurningGrinding | - |
| Worldwide Structural Fabrication Laser | Newburgh, IN | Laser | - |
| Agile Engineering & Manufacturing LLC Milling, Turning, Welding, EDM, Grinding, Finishing | Indianapolis, IN | MillingTurningWeldingEDMGrindingFinishing | - |
| Bedford Machine & Tool Inc Milling, Turning, Welding, Casting, Finishing | Bedford, IN | MillingTurningWeldingCastingFinishing | - |
| Blackstar CNC LLC Milling, Laser, Bending, Welding, Finishing · ISO 9001 | Merrillville, IN | MillingLaserBendingWeldingFinishing | ISO 9001 |
| C M Engineering Inc Milling, Laser, Bending, Welding, Finishing, Assembly · ISO 9001 | Dugger, IN | MillingLaserBendingWeldingFinishingAssembly | ISO 9001 |
| CNC Industries, LLC Milling, Turning, Finishing, Assembly · ISO 9001, AS9100, ITAR | Fort Wayne, IN | MillingTurningFinishingAssembly | ISO 9001, AS9100, ITAR |
| Eagle Magnetic Co Inc Laser, Welding, Finishing · ISO 9001 | Indianapolis, IN | LaserWeldingFinishing | ISO 9001 |
| Echelbarger Precision Machining Milling, Swiss, Waterjet, Bending, Welding, EDM, Finishing · ISO 9001 | Kokomo, IN | MillingSwissWaterjetBendingWeldingEDMFinishing | ISO 9001 |
| Fathouse Fabrications Laser, Bending, Welding, Finishing | Martinsville, IN | LaserBendingWeldingFinishing | - |
| H & W Machine Repair & Rebuilding Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| LG Metalworks LLC Milling, Turning, Laser, Waterjet, Welding, EDM, Finishing | Bloomington, IN | MillingTurningLaserWaterjetWeldingEDMFinishing | - |
| Lively Machine Milling, Turning, Bending, Finishing | Evansville, IN | MillingTurningBendingFinishing | - |
| Mesco Manufacturing Group LLC Milling, Laser, Welding, Finishing · ISO 9001 | Greensburg, IN | MillingLaserWeldingFinishing | ISO 9001 |
| Quick Turn Anodizing LLC Finishing · ISO 9001, AS9100, ITAR | Edinburgh, IN | Finishing | ISO 9001, AS9100, ITAR |
| Shape Shifters Inc Milling, Waterjet, Bending, Welding, Stamping, Finishing | Bloomfield, IN | MillingWaterjetBendingWeldingStampingFinishing | - |
| Stellar Industries LLC Laser, Bending, Welding, Stamping, Finishing · ISO 9001 | Nappanee, IN | LaserBendingWeldingStampingFinishing | ISO 9001 |
| Subtract LLC Milling, Turning, Swiss, Laser, Waterjet, Welding, EDM, Finishing | Muncie, IN | MillingTurningSwissLaserWaterjetWeldingEDMFinishing | - |
| TR Manufacturing, LLC Milling, Turning, Swiss, Laser, Waterjet, Welding, Finishing · CMMC | Garrett, IN | MillingTurningSwissLaserWaterjetWeldingFinishing | CMMC |
| Yankee Steel Inc Turning, Welding, Finishing | Terre Haute, IN | TurningWeldingFinishing | - |
| A M Machine Co Inc Milling, Turning, Swiss, Grinding | Mooresville, IN | MillingTurningSwissGrinding | - |
| Abrasive Waterjet of Indiana, LLC Laser, Waterjet, Bending, EDM · ISO 9001 | Noblesville, IN | LaserWaterjetBendingEDM | ISO 9001 |
| Absolute Machining LLC Welding | Fort Wayne, IN | Welding | - |
| Accuburn of Williamsport, Inc Milling, Laser, Bending, Welding, Assembly | Williamsport, IN | MillingLaserBendingWeldingAssembly | - |
| Alliance Tool & Precision Machining a Division of Murray Equipment Milling · ISO 9001 | Fort Wayne, IN | Milling | 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 |
| Applied Metals & Machine Works, Inc. Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| Armor Contract Manufacturing Inc Welding, Stamping, Finishing | Elkhart, IN | WeldingStampingFinishing | - |
| Bertrand Products, Inc Milling, Turning, Grinding, Finishing · ISO 9001 | South Bend, IN | MillingTurningGrindingFinishing | ISO 9001 |
| Boyer Machine & Tool Co Inc Milling, Turning, Swiss, EDM · ITAR | Columbus, IN | MillingTurningSwissEDM | ITAR |
| Britt Tool Inc Milling, Turning, Waterjet | Brazil, IN | MillingTurningWaterjet | - |
| C & P Machine Welding | Fort Wayne, IN | Welding | - |
| Camtool, Inc Stamping · ISO 9001, AS9100 | Muncie, IN | Stamping | ISO 9001, AS9100 |
| 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 |
| Connecta Corp Milling, Turning, Swiss | Indianapolis, IN | MillingTurningSwiss | - |
| D & D Automation Inc Milling, Turning, Welding, EDM | Terre Haute, IN | MillingTurningWeldingEDM | - |
| 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 |
| Dynamic Metals LLC Milling, Laser, Bending, Welding, Stamping · AS9100, NADCAP | Elkhart, IN | MillingLaserBendingWeldingStamping | AS9100, NADCAP |
| Emi Quality Plating Service, LLC Welding, Finishing | Evansville, IN | WeldingFinishing | - |
| Evansville Sheet Metal Works Bending, Laser, Welding, Waterjet | Evansville, IN | BendingLaserWeldingWaterjet | - |