| Mountain Defense LLC Milling, Turning, EDM, Assembly | Mentor, OH | MillingTurningEDMAssembly | - |
| Perfect Precision Machining Ltd Milling, Turning, Welding, EDM | Akron, OH | MillingTurningWeldingEDM | - |
| Thaler Machine Co LLC Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100 | Springboro, OH | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100 |
| B & G Tool Co Waterjet, Welding, Stamping, EDM · ISO 9001 | Columbus, OH | WaterjetWeldingStampingEDM | ISO 9001 |
| Bitec Milling, Turning, Swiss, Waterjet, EDM, Grinding | Dayton, OH | MillingTurningSwissWaterjetEDMGrinding | - |
| Bowden Manufacturing Corp Milling, Turning, EDM · AS9100 | Willoughby, OH | MillingTurningEDM | AS9100 |
| DCP Tool Manufacturing, LLC Milling, Turning, Laser, Welding, EDM, Grinding, Finishing | Dayton, OH | MillingTurningLaserWeldingEDMGrindingFinishing | - |
| Fredon Corp Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100, ITAR, NADCAP | Mentor, OH | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100, ITAR, NADCAP |
| HR Machine Turning, Waterjet, EDM | Dayton, OH | TurningWaterjetEDM | - |
| Maumee Pattern Co Milling, Turning, Casting, EDM · ITAR, CMMC | Toledo, OH | MillingTurningCastingEDM | ITAR, CMMC |
| Princeton Tool Inc Milling, Waterjet, Casting, EDM, Grinding, Assembly · AS9100, NADCAP | Mentor, OH | MillingWaterjetCastingEDMGrindingAssembly | AS9100, NADCAP |
| Rimeco Products Inc Milling, Turning, EDM · AS9100, ITAR, NADCAP | Willoughby, OH | MillingTurningEDM | AS9100, ITAR, NADCAP |
| Rozic Tool & Machine LLC Milling, Turning, EDM · ISO 9001 | Euclid, OH | MillingTurningEDM | ISO 9001 |
| Troy Innovative Instruments, Inc Milling, Turning, Swiss, Laser, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001, ITAR, ISO 13485 | Middlefield, OH | MillingTurningSwissLaserWeldingEDMGrindingFinishingAssembly | ISO 9001, ITAR, ISO 13485 |
| Trust Manufacturing LLC Milling, Turning, Waterjet, Bending, Forging, EDM, Grinding, Finishing | Euclid, OH | MillingTurningWaterjetBendingForgingEDMGrindingFinishing | - |