| Napoleon Machine LLC Milling, Bending, Welding, Forging, Grinding · ISO 9001, ITAR, CMMC | Napoleon, OH | MillingBendingWeldingForgingGrinding | ISO 9001, ITAR, CMMC |
| Howland Machine Corp Milling, Welding | Niles, OH | MillingWelding | - |
| Inno-Tec Welding & Fabrication LLC Welding | Springfield, OH | Welding | - |
| R & J Cylinder & Machine, Inc Milling, Turning, Welding | New Philadelphia, OH | MillingTurningWelding | - |
| Stark Industrial, LLC Milling, Turning, Swiss, Welding, EDM, Grinding · ISO 9001 | North Canton, OH | MillingTurningSwissWeldingEDMGrinding | ISO 9001 |
| Aircraft Welding Inc Welding · NADCAP | Euclid, OH | Welding | NADCAP |
| 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 |
| Fredon Corp Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100, ITAR, NADCAP | Mentor, OH | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100, ITAR, NADCAP |
| Gem City Metal Technologies, LLC Milling, Laser, Punching, Bending, Welding, Stamping · AS9100, NADCAP | Dayton, OH | MillingLaserPunchingBendingWeldingStamping | AS9100, NADCAP |
| Northern States Metals Bending, Welding, Stamping · ISO 9001 | Youngstown, OH | BendingWeldingStamping | ISO 9001 |
| Astro Manufacturing & Design Inc Milling, Turning, Laser, Waterjet, Welding, EDM, Finishing, Assembly · ISO 9001, NADCAP | Eastlake, OH | MillingTurningLaserWaterjetWeldingEDMFinishingAssembly | ISO 9001, NADCAP |
| Fabriweld Corp Milling, Turning, Laser, Welding, Finishing | Norwalk, OH | MillingTurningLaserWeldingFinishing | - |
| Accu-Grind & Mfg. Co. Inc Milling, Turning, Welding, Grinding, Finishing · ISO 9001 | Dayton, OH | MillingTurningWeldingGrindingFinishing | ISO 9001 |
| Ace Precision Industries Milling, Welding, EDM | Akron, OH | MillingWeldingEDM | - |
| Advance Apex Inc Milling, Turning, Swiss, Welding · ISO 9001, AS9100, ITAR | Grove City, OH | MillingTurningSwissWelding | ISO 9001, AS9100, ITAR |
| Alloy Fabricators Inc Bending, Laser, Welding, Waterjet, Stamping | Lodi, OH | BendingLaserWeldingWaterjetStamping | - |
| Alpha Omega Machining Inc Milling, Turning, Welding, EDM, Finishing · ISO 9001 | Painesville, OH | MillingTurningWeldingEDMFinishing | ISO 9001 |
| Anchor Fabricators Inc Laser, Punching, Bending, Welding, Stamping, Assembly | Clayton, OH | LaserPunchingBendingWeldingStampingAssembly | - |
| Apex Metal Fabricating & Mach Bending, Laser, Welding | Toledo, OH | BendingLaserWelding | - |
| Beckman Machine Inc Bending, Welding | Cincinnati, OH | BendingWelding | - |
| Blackburn's Fabrication Milling, Turning, Bending, Laser, Welding | Columbus, OH | MillingTurningBendingLaserWelding | - |
| Boyce Machine Milling, Turning, Welding | Kent, OH | MillingTurningWelding | - |
| Bront Machining Inc. Milling, Turning, Welding · ISO 9001, AS9100 | Dayton, OH | MillingTurningWelding | ISO 9001, AS9100 |
| Brot Inc Laser, Punching, Welding, Stamping, Finishing, Assembly | Cleveland, OH | LaserPunchingWeldingStampingFinishingAssembly | - |
| Columbus Machine Works Milling, Turning, Bending, Welding, EDM, Casting | Columbus, OH | MillingTurningBendingWeldingEDMCasting | - |
| Conti Tool & Die, Inc Milling, Turning, Bending, Welding, Grinding | Akron, OH | MillingTurningBendingWeldingGrinding | - |
| Copen Machine, Inc Milling, Turning, Swiss, Welding, Grinding · ISO 9001 | Kent, OH | MillingTurningSwissWeldingGrinding | ISO 9001 |
| Coronado Steel Co Turning, Welding, Casting, Metal AM | Youngstown, OH | TurningWeldingCastingMetal AM | - |
| Dan's Custom Machining LLC Milling, Turning, Welding | Williamsburg, OH | MillingTurningWelding | - |
| Diamond Manufacturing of Bluffton, Ltd Laser, Welding, Assembly | Bluffton, OH | LaserWeldingAssembly | - |
| Die-Mension Corp Milling, Turning, Welding, Stamping, EDM, Grinding | Brunswick, OH | MillingTurningWeldingStampingEDMGrinding | - |
| Direct Tooling Concepts LLP Welding, Stamping, EDM, Grinding | Versailles, OH | WeldingStampingEDMGrinding | - |
| Enterprise Machine Inc. Milling, Turning, Welding, EDM | Cincinnati, OH | MillingTurningWeldingEDM | - |
| G & W Products, Inc Laser, Punching, Bending, Welding, Stamping, Finishing | Fairfield, OH | LaserPunchingBendingWeldingStampingFinishing | - |
| GMP Welding & Fabrication, Inc. Bending, Welding | Cincinnati, OH | BendingWelding | - |
| H & H Machine Shop of Akron Inc Milling, Turning, Welding, Grinding | Akron, OH | MillingTurningWeldingGrinding | - |
| Harvey Brothers Inc Bending, Welding | Cincinnati, OH | BendingWelding | - |
| Independent Sheet Metal LLC Punching, Welding | Middletown, OH | PunchingWelding | - |
| J & L Precision Manufacturing LLC Bending, Welding, Stamping, Finishing, Assembly · ISO 9001 | Brooklyn Heights, OH | BendingWeldingStampingFinishingAssembly | ISO 9001 |
| Jergens Inc Milling, Welding · ISO 9001, AS9100 | Cleveland, OH | MillingWelding | ISO 9001, AS9100 |
| Jet Machine & Mfg Milling, Welding | Hamilton, OH | MillingWelding | - |
| Johnson Manufacturing Systems LLC Milling, Turning, Welding, Grinding | Miamisburg, OH | MillingTurningWeldingGrinding | - |
| Kyron Tool & Machine Co., Inc Milling, Turning, Welding | Columbus, OH | MillingTurningWelding | - |
| Langdon Inc Welding | Cincinnati, OH | Welding | - |
| 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 |
| Lockrey Manufacturing Welding, Finishing · ISO 9001, ITAR | Toledo, OH | WeldingFinishing | ISO 9001, ITAR |
| Logan Machine Co Milling, Turning, Bending, Welding | Akron, OH | MillingTurningBendingWelding | - |
| LR Design+Build Laser, Welding, Metal AM | Columbus, OH | LaserWeldingMetal AM | - |
| Mach3 Machining Milling, Turning, Welding · ISO 9001 | Cuyahoga Falls, OH | MillingTurningWelding | ISO 9001 |