| Evans Metal Products Co Bending, Welding | Elkhart, IN | BendingWelding | - |
| GCG Industries Inc Milling, Turning · ISO 9001, AS9100, ISO 13485 | Fort Wayne, IN | MillingTurning | ISO 9001, AS9100, ISO 13485 |
| Hand Industries Inc Grinding · ISO 9001, AS9100 | Warsaw, IN | Grinding | ISO 9001, AS9100 |
| Hiler Industries Milling, Turning, Casting, EDM · ISO 9001 | La Porte, IN | MillingTurningCastingEDM | ISO 9001 |
| Issi Engineering and Machining, LLC Grinding · ISO 9001 | Evansville, IN | Grinding | ISO 9001 |
| Lear Machining & Waterjet Inc Milling, Turning, Waterjet, Welding, Grinding · ISO 9001 | Columbus, IN | MillingTurningWaterjetWeldingGrinding | ISO 9001 |
| Precise Manufacturing Inc Bending · ISO 9001 | Fort Wayne, IN | Bending | ISO 9001 |
| Siddhi Integrated Manufacturing Services Inc Milling, Turning, Swiss, Stamping, EDM · ISO 9001, ITAR | Clarksville, IN | MillingTurningSwissStampingEDM | ISO 9001, ITAR |
| Engel Mfg. Milling · ISO 9001, AS9100 | South Bend, IN | Milling | ISO 9001, AS9100 |
| Mercer Machine Company, Inc Milling, Turning, EDM · AS9100 | Camby, IN | MillingTurningEDM | AS9100 |
| Agile Engineering & Manufacturing LLC Milling, Turning, Welding, EDM, Grinding, Finishing | Indianapolis, IN | MillingTurningWeldingEDMGrindingFinishing | - |
| Emi Quality Plating Service, LLC Welding, Finishing | Evansville, IN | WeldingFinishing | - |
| Kammerer Dynamics Inc Laser, Bending, Welding, Casting, Finishing, Assembly | Kendallville, IN | LaserBendingWeldingCastingFinishingAssembly | - |
| Lively Machine Milling, Turning, Bending, Finishing | Evansville, IN | MillingTurningBendingFinishing | - |
| MSP Maufacturing Milling, Turning, Bending, Welding, Finishing, Assembly | Bloomington, IN | MillingTurningBendingWeldingFinishingAssembly | - |
| Shape Shifters Inc Milling, Waterjet, Bending, Welding, Stamping, Finishing | Bloomfield, IN | MillingWaterjetBendingWeldingStampingFinishing | - |
| 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 | - |
| B & J Specialty Inc Milling, Welding, EDM | Wawaka, IN | MillingWeldingEDM | - |
| C & P Machine Welding | Fort Wayne, IN | Welding | - |
| Cimtech Inc Bending, Welding, Stamping | New Albany, IN | BendingWeldingStamping | - |
| CP Industries Inc Milling, Welding, Casting | Granger, IN | MillingWeldingCasting | - |
| Defelice Engineering, Inc Milling, Turning, Bending, Welding, Casting, Grinding | Mooresville, IN | MillingTurningBendingWeldingCastingGrinding | - |
| Dynamic Metals LLC Milling, Laser, Bending, Welding, Stamping · AS9100, NADCAP | Elkhart, IN | MillingLaserBendingWeldingStamping | AS9100, NADCAP |
| H & W Machine Repair & Rebuilding Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| Hamblen Machine Inc Milling, Turning, EDM, Grinding | Bloomington, IN | MillingTurningEDMGrinding | - |
| Hammer MetalWerks Bending, Laser, Welding | Indianapolis, IN | BendingLaserWelding | - |
| HG Metals Bending, Welding | Indianapolis, IN | BendingWelding | - |
| JMS Machine, Inc Milling, Turning, EDM, Grinding | Columbia City, IN | MillingTurningEDMGrinding | - |
| K & K Inc Milling, Casting | Elkhart, IN | MillingCasting | - |
| Kent Machine Milling, EDM, Grinding | Indianapolis, IN | MillingEDMGrinding | - |
| Krukemeier Machine Milling, Turning, EDM · AS9100, NADCAP | Indianapolis, IN | MillingTurningEDM | AS9100, NADCAP |
| Lyntech Engineering Inc Milling, Turning, Swiss | Rochester, IN | MillingTurningSwiss | - |
| Marquee Machining & Engineering LLC Milling | Leesburg, IN | Milling | - |
| Quake Manufacturing Inc Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| Refax Inc Welding | Gary, IN | Welding | - |
| Statt Engineering LLC Milling, Stamping · AS9100, ITAR | Martinsville, IN | MillingStamping | AS9100, ITAR |
| Turn & Burn Machine, LLC Milling, Welding | Sunman, IN | MillingWelding | - |