| Progress Defense Corporation Assembly · ISO 9001 | Schererville, IN | Assembly | ISO 9001 |
| Agile Engineering & Manufacturing LLC Milling, Turning, Welding, EDM, Grinding, Finishing | Indianapolis, IN | MillingTurningWeldingEDMGrindingFinishing | - |
| Applied Metals & Machine Works, Inc. Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| Atlas Foundry Company Inc Casting, Grinding | Marion, IN | CastingGrinding | - |
| Britt Tool Inc Milling, Turning, Waterjet | Brazil, IN | MillingTurningWaterjet | - |
| Echelbarger Precision Machining Milling, Swiss, Waterjet, Bending, Welding, EDM, Finishing · ISO 9001 | Kokomo, IN | MillingSwissWaterjetBendingWeldingEDMFinishing | ISO 9001 |
| Estes Design & Manufacturing Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding · ISO 13485 | Indianapolis, IN | MillingTurningLaserPunchingBendingWeldingGrinding | ISO 13485 |
| Evansville Sheet Metal Works Bending, Laser, Welding, Waterjet | Evansville, IN | BendingLaserWeldingWaterjet | - |
| Fathouse Fabrications Laser, Bending, Welding, Finishing | Martinsville, IN | LaserBendingWeldingFinishing | - |
| Highway Machine Co Inc Milling, Welding, Grinding | Princeton, IN | MillingWeldingGrinding | - |
| Independence Machine & Tool LLC Milling, Turning, Grinding | Madison, IN | MillingTurningGrinding | - |
| J B Tool Die & Engineering Co Inc Milling, Turning, Welding, Stamping, EDM, Grinding · ISO 9001 | Fort Wayne, IN | MillingTurningWeldingStampingEDMGrinding | ISO 9001 |
| Kammerer Dynamics Inc Laser, Bending, Welding, Casting, Finishing, Assembly | Kendallville, IN | LaserBendingWeldingCastingFinishingAssembly | - |
| Kihm Metal Technologies Laser, Welding | Brazil, IN | LaserWelding | - |
| Kilgore Manufacturing Co Inc Milling, Swiss, Bending, Welding, EDM, Finishing, Assembly · ISO 9001, ITAR | Columbia City, IN | MillingSwissBendingWeldingEDMFinishingAssembly | ISO 9001, ITAR |
| M.a. Metal Co., Inc Laser, Bending, Welding, Stamping, Assembly · ISO 9001 | Columbus, IN | LaserBendingWeldingStampingAssembly | ISO 9001 |
| Melting Point Metalworks LLC Laser, Bending, Welding | Brownsburg, IN | LaserBendingWelding | - |
| Mesco Manufacturing Group LLC Milling, Laser, Welding, Finishing · ISO 9001 | Greensburg, IN | MillingLaserWeldingFinishing | ISO 9001 |
| Midwest Industrial Metal Fabrication Inc Milling, Turning, Punching, Bending, Welding, Stamping, Finishing | Huntington, IN | MillingTurningPunchingBendingWeldingStampingFinishing | - |
| Parametric Machining Incorporated Milling, Turning, EDM, Grinding · ISO 9001, ISO 13485 | Huntertown, IN | MillingTurningEDMGrinding | ISO 9001, ISO 13485 |
| 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 | - |
| Quake Manufacturing Inc Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| Siddhi Integrated Manufacturing Services Inc Milling, Turning, Swiss, Stamping, EDM · ISO 9001, ITAR | Clarksville, IN | MillingTurningSwissStampingEDM | ISO 9001, ITAR |
| South Bend Form Tool Co Milling, Turning, EDM | South Bend, IN | MillingTurningEDM | - |
| Summit City Precision Machining LLC Milling, Turning, EDM · ISO 9001 | Fort Wayne, IN | MillingTurningEDM | ISO 9001 |
| Walerko Tool & Engineering Milling, Turning, Casting · ISO 9001, AS9100 | Elkhart, IN | MillingTurningCasting | ISO 9001, AS9100 |
| Yardarm Fabrication Milling, Turning, Bending, Laser, Welding, Stamping | Indianapolis, IN | MillingTurningBendingLaserWeldingStamping | - |
| Steel House Bending, Welding | Indianapolis, IN | BendingWelding | - |
| Subtract LLC Milling, Turning, Swiss, Laser, Waterjet, Welding, EDM, Finishing | Muncie, IN | MillingTurningSwissLaserWaterjetWeldingEDMFinishing | - |
| Hammer MetalWerks Bending, Laser, Welding | Indianapolis, IN | BendingLaserWelding | - |
| HG Metals Bending, Welding | Indianapolis, IN | BendingWelding | - |
| Holbrook Laser, Welding | Franklin, IN | LaserWelding | - |
| IFT Worldwide Milling, Stamping, Finishing | South Bend, IN | MillingStampingFinishing | - |
| LG Metalworks LLC Milling, Turning, Laser, Waterjet, Welding, EDM, Finishing | Bloomington, IN | MillingTurningLaserWaterjetWeldingEDMFinishing | - |
| Metal Fabricators Plus LLC Laser, Waterjet, Bending, Welding | Indianapolis, IN | LaserWaterjetBendingWelding | - |
| RPM Tool Waterjet, Stamping | Princeton, IN | WaterjetStamping | - |
| Toolcraft LLC Milling | Fort Wayne, IN | Milling | - |
| Triad Fabricators, LLC Milling, Turning, Bending | Evansville, IN | MillingTurningBending | - |