| Accu-Grind & Mfg. Co. Inc Milling, Turning, Welding, Grinding, Finishing · ISO 9001 | Dayton, OH | MillingTurningWeldingGrindingFinishing | ISO 9001 |
| Accuform Precision LLC Milling, Casting, Finishing | Youngstown, OH | MillingCastingFinishing | - |
| Advance Apex Inc Milling, Turning, Swiss, Welding · ISO 9001, AS9100, ITAR | Grove City, OH | MillingTurningSwissWelding | ISO 9001, AS9100, ITAR |
| Aeropact Manufacturing LLC Milling · ISO 9001, AS9100 | Bowling Green, OH | Milling | ISO 9001, AS9100 |
| All Craft Manufacturing Co Milling | Cincinnati, OH | Milling | - |
| Ansco Machine Co Milling, Turning, Punching, Grinding, Finishing · ISO 9001, ITAR | Peninsula, OH | MillingTurningPunchingGrindingFinishing | ISO 9001, ITAR |
| Ashore Manufacturing Group LLC Milling, Turning, Stamping, EDM, Grinding · ISO 9001, AS9100, ITAR, CMMC | Berlin Center, OH | MillingTurningStampingEDMGrinding | ISO 9001, AS9100, ITAR, CMMC |
| Axion Labs Inc Milling, Turning, Finishing · ISO 9001, AS9100, ITAR, ISO 13485 | Westlake, OH | MillingTurningFinishing | ISO 9001, AS9100, ITAR, ISO 13485 |
| Blackburn's Fabrication Milling, Turning, Bending, Laser, Welding | Columbus, OH | MillingTurningBendingLaserWelding | - |
| Bowden Manufacturing Corp Milling, Turning, EDM · AS9100 | Willoughby, OH | MillingTurningEDM | AS9100 |
| Boyce Machine Milling, Turning, Welding | Kent, OH | MillingTurningWelding | - |
| Budde Precision Machining Corp Milling, Turning, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 | Dayton, OH | MillingTurningWeldingEDMGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 |
| Burton Industries Inc Milling, Turning, Stamping, Grinding · ISO 9001, AS9100, IATF 16949 | Mentor, OH | MillingTurningStampingGrinding | ISO 9001, AS9100, IATF 16949 |
| Commercial Metal Fabricators, Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding | Dayton, OH | MillingTurningLaserWaterjetPunchingBendingWelding | - |
| Dearborn, Inc Milling, Grinding | Berea, OH | MillingGrinding | - |
| Ewart-Ohlson Machine Company Milling, Turning, Bending · ISO 9001, AS9100 | Cuyahoga Falls, OH | MillingTurningBending | ISO 9001, AS9100 |
| Fabriweld Corp Milling, Turning, Laser, Welding, Finishing | Norwalk, OH | MillingTurningLaserWeldingFinishing | - |
| GB Fabrication Company Milling, Turning, Laser, Punching, Bending, Welding, Stamping, Grinding, Finishing, Assembly | Shiloh, OH | MillingTurningLaserPunchingBendingWeldingStampingGrindingFinishingAssembly | - |
| Guyer Precision Inc Milling, Turning, Swiss, Grinding, Finishing · ISO 9001, ITAR | Painesville, OH | MillingTurningSwissGrindingFinishing | ISO 9001, ITAR |
| H & H Machine Shop of Akron Inc Milling, Turning, Welding, Grinding | Akron, OH | MillingTurningWeldingGrinding | - |
| Habco Tool & Development Co Inc Milling, Turning, EDM, Grinding, Finishing · ISO 9001, AS9100, ITAR | Mentor, OH | MillingTurningEDMGrindingFinishing | ISO 9001, AS9100, ITAR |
| Hofacker Precision Machining LLC Milling, Turning, Casting · ISO 9001 | Clayton, OH | MillingTurningCasting | ISO 9001 |
| Horst Manufacturing Co Inc Milling, Turning | Windham, OH | MillingTurning | - |
| Jet Machine & Mfg Milling, Welding | Hamilton, OH | MillingWelding | - |
| Keystone Machine & Fab, Inc Milling, Turning, EDM, Grinding | Grafton, OH | MillingTurningEDMGrinding | - |
| Lange Grinding & Machining, Inc Milling, Turning, Welding, Grinding | Streetsboro, OH | MillingTurningWeldingGrinding | - |
| Lawson Precision Machining, Inc Milling, Turning, Welding, Grinding · ISO 9001 | Bucyrus, OH | MillingTurningWeldingGrinding | ISO 9001 |
| Lowery's Job Shop Milling, Turning, Laser, Welding, Grinding, Finishing | Saint Louisville, OH | MillingTurningLaserWeldingGrindingFinishing | - |
| Meta Manufacturing Corp Milling, Turning | Blue Ash, OH | MillingTurning | - |
| Midway Swiss Turn, Inc Milling, Turning, Swiss, Finishing, Assembly · CMMC | Wooster, OH | MillingTurningSwissFinishingAssembly | CMMC |
| Midwest Metal Fabrications Milling, Turning, Bending, Laser, Welding · ISO 9001, AS9100 | Tallmadge, OH | MillingTurningBendingLaserWelding | ISO 9001, AS9100 |
| Midwest Precision LLC Milling, Turning, Casting, EDM, Grinding, Assembly · ISO 9001, ITAR | Eastlake, OH | MillingTurningCastingEDMGrindingAssembly | ISO 9001, ITAR |
| Mountain Defense LLC Milling, Turning, EDM, Assembly | Mentor, OH | MillingTurningEDMAssembly | - |
| Napoleon Machine LLC Milling, Bending, Welding, Forging, Grinding · ISO 9001, ITAR, CMMC | Napoleon, OH | MillingBendingWeldingForgingGrinding | ISO 9001, ITAR, CMMC |
| Premier Aerospace Group LLC Milling, Bending, Welding | Dayton, OH | MillingBendingWelding | - |
| RECR Milling, Waterjet, Bending, Welding | Dayton, OH | MillingWaterjetBendingWelding | - |
| Riverside Machine & Automation Inc Milling, Turning, Welding, Stamping, Grinding, Assembly | Genoa, OH | MillingTurningWeldingStampingGrindingAssembly | - |
| Rozic Tool & Machine LLC Milling, Turning, EDM · ISO 9001 | Euclid, OH | MillingTurningEDM | ISO 9001 |
| Seneca Manufacturing LLC Milling, Turning, Welding | Tiffin, OH | MillingTurningWelding | - |
| Srpm Inc Milling, Turning, Assembly · ISO 9001, ITAR | Solon, OH | MillingTurningAssembly | ISO 9001, ITAR |
| Stark Industrial, LLC Milling, Turning, Swiss, Welding, EDM, Grinding · ISO 9001 | North Canton, OH | MillingTurningSwissWeldingEDMGrinding | ISO 9001 |
| Steelcrest Precision, Inc Milling, Turning, Swiss, Welding, EDM, Grinding, Assembly · ISO 9001, AS9100 | Wauseon, OH | MillingTurningSwissWeldingEDMGrindingAssembly | ISO 9001, AS9100 |
| Summit Machining Co., Ltd Milling, Turning, Welding, Stamping, Casting, Finishing | Mogadore, OH | MillingTurningWeldingStampingCastingFinishing | - |
| Sunset Industries Inc Milling, Turning, Swiss, Casting, EDM, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, CMMC | Mentor, OH | MillingTurningSwissCastingEDMGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, CMMC |
| Swanton Welding & Machining Co Inc Milling, Laser, Bending, Welding, Finishing, Assembly | Swanton, OH | MillingLaserBendingWeldingFinishingAssembly | - |
| Swihart Industries Milling, Turning · ISO 9001 | Dayton, OH | MillingTurning | ISO 9001 |
| Taylor Manufacturing Co Inc Milling, Turning, Grinding | Springfield, OH | MillingTurningGrinding | - |
| The Gent Machine Company Milling, Turning · ISO 9001, IATF 16949 | Cleveland, OH | MillingTurning | ISO 9001, IATF 16949 |
| Toledo Metal Spinning Company Milling, Bending, Laser, Welding, Stamping · ISO 9001 | Toledo, OH | MillingBendingLaserWeldingStamping | ISO 9001 |
| Toth Industries Inc Milling, Turning, Bending, Casting · ISO 9001 | Toledo, OH | MillingTurningBendingCasting | ISO 9001 |