| Swanton Welding & Machining Co Inc Milling, Laser, Bending, Welding, Finishing, Assembly | Swanton, OH | MillingLaserBendingWeldingFinishingAssembly | - |
| Steelcrest Precision, Inc Milling, Turning, Swiss, Welding, EDM, Grinding, Assembly · ISO 9001, AS9100 | Wauseon, OH | MillingTurningSwissWeldingEDMGrindingAssembly | ISO 9001, AS9100 |
| Srpm Inc Milling, Turning, Assembly · ISO 9001, ITAR | Solon, OH | MillingTurningAssembly | ISO 9001, ITAR |
| VTD Systems Inc Milling, Turning, Swiss, Welding, EDM, Finishing · ISO 9001, ITAR | Elyria, OH | MillingTurningSwissWeldingEDMFinishing | ISO 9001, ITAR |
| Stark Industrial, LLC Milling, Turning, Swiss, Welding, EDM, Grinding · ISO 9001 | North Canton, OH | MillingTurningSwissWeldingEDMGrinding | ISO 9001 |
| Weldcraft Products Milling, Welding, Grinding | Tipp City, OH | MillingWeldingGrinding | - |
| Lowery's Job Shop Milling, Turning, Laser, Welding, Grinding, Finishing | Saint Louisville, OH | MillingTurningLaserWeldingGrindingFinishing | - |
| Sunset Industries Inc Milling, Turning, Swiss, Casting, EDM, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, CMMC | Mentor, OH | MillingTurningSwissCastingEDMGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, CMMC |
| Custom Materials Inc Milling, Welding, Stamping, Grinding, Assembly · ISO 9001 | Chagrin Falls, OH | MillingWeldingStampingGrindingAssembly | ISO 9001 |
| McNeil Industries Inc Milling, Turning, Welding, Stamping, Grinding, Assembly · ISO 9001, AS9100 | Painesville, OH | MillingTurningWeldingStampingGrindingAssembly | ISO 9001, AS9100 |
| Paradigm Industrial Milling, Turning, Waterjet, Bending, Welding, EDM, Grinding, Assembly · ISO 9001, ITAR, CMMC | Dayton, OH | MillingTurningWaterjetBendingWeldingEDMGrindingAssembly | ISO 9001, ITAR, CMMC |
| Production Screw Machine Co Milling, Turning, Bending, Welding · ISO 9001, AS9100, ITAR | Dayton, OH | MillingTurningBendingWelding | ISO 9001, AS9100, ITAR |
| Skamar Machine Milling, Turning · ISO 9001 | Cleveland, OH | MillingTurning | ISO 9001 |
| Southeastern Machining Milling, Turning, Welding · ISO 9001 | Worthington, OH | MillingTurningWelding | ISO 9001 |
| Tessec LLC Milling, Welding, EDM, Grinding, Assembly · AS9100 | Dayton, OH | MillingWeldingEDMGrindingAssembly | AS9100 |
| Ashore Manufacturing Group LLC Milling, Turning, Stamping, EDM, Grinding · ISO 9001, AS9100, ITAR, CMMC | Berlin Center, OH | MillingTurningStampingEDMGrinding | ISO 9001, AS9100, ITAR, CMMC |
| Astro Manufacturing & Design Inc Milling, Turning, Laser, Waterjet, Welding, EDM, Finishing, Assembly · ISO 9001, NADCAP | Eastlake, OH | MillingTurningLaserWaterjetWeldingEDMFinishingAssembly | ISO 9001, NADCAP |
| Axion Labs Inc Milling, Turning, Finishing · ISO 9001, AS9100, ITAR, ISO 13485 | Westlake, OH | MillingTurningFinishing | ISO 9001, AS9100, ITAR, ISO 13485 |
| 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 |
| Cleveland Steel Services LLC Milling, Turning, Grinding | Middleburg Heights, OH | MillingTurningGrinding | - |
| Delco LLC Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100 | Akron, OH | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100 |
| Ewart-Ohlson Machine Company Milling, Turning, Bending · ISO 9001, AS9100 | Cuyahoga Falls, OH | MillingTurningBending | ISO 9001, AS9100 |
| Gem City Metal Technologies, LLC Milling, Laser, Punching, Bending, Welding, Stamping · AS9100, NADCAP | Dayton, OH | MillingLaserPunchingBendingWeldingStamping | AS9100, NADCAP |
| Guyer Precision Inc Milling, Turning, Swiss, Grinding, Finishing · ISO 9001, ITAR | Painesville, OH | MillingTurningSwissGrindingFinishing | ISO 9001, ITAR |
| Hofacker Precision Machining LLC Milling, Turning, Casting · ISO 9001 | Clayton, OH | MillingTurningCasting | ISO 9001 |
| Jergens Inc Milling, Welding · ISO 9001, AS9100 | Cleveland, OH | MillingWelding | ISO 9001, AS9100 |
| Lawson Precision Machining, Inc Milling, Turning, Welding, Grinding · ISO 9001 | Bucyrus, OH | MillingTurningWeldingGrinding | ISO 9001 |
| Midwest Precision LLC Milling, Turning, Casting, EDM, Grinding, Assembly · ISO 9001, ITAR | Eastlake, OH | MillingTurningCastingEDMGrindingAssembly | ISO 9001, ITAR |
| Southern Ohio Manufacturing Milling, Turning, Laser, Bending, Welding, Grinding, Finishing | Amelia, OH | MillingTurningLaserBendingWeldingGrindingFinishing | - |
| Standard Machine, LLC Milling, Turning, Welding, Casting, Grinding, Finishing | Cleveland, OH | MillingTurningWeldingCastingGrindingFinishing | - |
| Summit Machining Co., Ltd Milling, Turning, Welding, Stamping, Casting, Finishing | Mogadore, OH | MillingTurningWeldingStampingCastingFinishing | - |
| Swihart Industries Milling, Turning · ISO 9001 | Dayton, OH | MillingTurning | ISO 9001 |
| Thaler Machine Co LLC Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100 | Springboro, OH | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100 |
| 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 |
| Ansco Machine Co Milling, Turning, Punching, Grinding, Finishing · ISO 9001, ITAR | Peninsula, OH | MillingTurningPunchingGrindingFinishing | ISO 9001, ITAR |
| Criterion Precision Machining Milling, Turning · ISO 9001, AS9100 | Cleveland, OH | MillingTurning | ISO 9001, AS9100 |
| Dunham Products, Inc Milling, Turning, Swiss, Grinding, Finishing · ISO 9001 | Walton Hills, OH | MillingTurningSwissGrindingFinishing | ISO 9001 |
| Midwest Metal Fabrications Milling, Turning, Bending, Laser, Welding · ISO 9001, AS9100 | Tallmadge, OH | MillingTurningBendingLaserWelding | ISO 9001, AS9100 |
| Nolte Precise Manufacturing Inc Milling, Turning, Swiss · ISO 9001, AS9100 | Cincinnati, OH | MillingTurningSwiss | ISO 9001, AS9100 |
| Seneca Manufacturing LLC Milling, Turning, Welding | Tiffin, OH | MillingTurningWelding | - |
| SJK Machine LLC Milling, Turning, Waterjet, Welding, EDM, Finishing | Minerva, OH | MillingTurningWaterjetWeldingEDMFinishing | - |
| Summit Machine Solutions LLC Milling, Welding, Grinding | Akron, OH | MillingWeldingGrinding | - |
| Tri-State Tool Grinding Incorporated Milling, Grinding · ISO 9001 | Cincinnati, OH | MillingGrinding | ISO 9001 |
| Triangle Precision Industries Inc Milling, Swiss, Laser, Waterjet, Bending, EDM · ISO 9001, ITAR | Dayton, OH | MillingSwissLaserWaterjetBendingEDM | ISO 9001, ITAR |
| Two M Precision Co. Inc Milling, Grinding, Finishing · ISO 9001 | Willoughby, OH | MillingGrindingFinishing | ISO 9001 |
| Blackburn's Fabrication Milling, Turning, Bending, Laser, Welding | Columbus, OH | MillingTurningBendingLaserWelding | - |
| Burton Industries Inc Milling, Turning, Stamping, Grinding · ISO 9001, AS9100, IATF 16949 | Mentor, OH | MillingTurningStampingGrinding | ISO 9001, AS9100, IATF 16949 |
| Columbus Machine Works Milling, Turning, Bending, Welding, EDM, Casting | Columbus, OH | MillingTurningBendingWeldingEDMCasting | - |
| Commercial Metal Fabricators, Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding | Dayton, OH | MillingTurningLaserWaterjetPunchingBendingWelding | - |