| Jet Machine & Mfg Milling, Welding | Hamilton, OH | MillingWelding | - |
| Lowery's Job Shop Milling, Turning, Laser, Welding, Grinding, Finishing | Saint Louisville, OH | MillingTurningLaserWeldingGrindingFinishing | - |
| Luke Manufacturing Co Casting, Finishing | Wadsworth, OH | CastingFinishing | - |
| Neway Stamping & Manufacturing, Inc Laser, Stamping, Finishing | Willoughby, OH | LaserStampingFinishing | - |
| Northlake Steel Corp Turning, Forging, Grinding, Finishing | Valley City, OH | TurningForgingGrindingFinishing | - |
| Overlake Manufacturing, Inc Milling, Turning, Swiss | New London, OH | MillingTurningSwiss | - |
| Plating Technology Inc Stamping, Finishing | Dayton, OH | StampingFinishing | - |
| Princeton Tool Inc Milling, Waterjet, Casting, EDM, Grinding, Assembly · AS9100, NADCAP | Mentor, OH | MillingWaterjetCastingEDMGrindingAssembly | AS9100, NADCAP |
| QP Mfg Group LLC Milling, Turning, Swiss, Finishing | Chardon, OH | MillingTurningSwissFinishing | - |
| SJK Machine LLC Milling, Turning, Waterjet, Welding, EDM, Finishing | Minerva, OH | MillingTurningWaterjetWeldingEDMFinishing | - |
| 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 | - |
| Trust Manufacturing LLC Milling, Turning, Waterjet, Bending, Forging, EDM, Grinding, Finishing | Euclid, OH | MillingTurningWaterjetBendingForgingEDMGrindingFinishing | - |
| Aircraft Welding Inc Welding · NADCAP | Euclid, OH | Welding | NADCAP |
| All Craft Manufacturing Co Milling | Cincinnati, OH | Milling | - |
| All-Metal Fabricators Bending, Laser, Welding | Brook Park, OH | BendingLaserWelding | - |
| Alloy Fabricators Inc Bending, Laser, Welding, Waterjet, Stamping | Lodi, OH | BendingLaserWeldingWaterjetStamping | - |
| Ameco USA Bending, Welding, Waterjet · NADCAP | Cleveland, OH | BendingWeldingWaterjet | NADCAP |
| Anchor Fabricators Inc Laser, Punching, Bending, Welding, Stamping, Assembly | Clayton, OH | LaserPunchingBendingWeldingStampingAssembly | - |
| Avid Manufacturing LLC Milling, Assembly | Springfield, OH | MillingAssembly | - |
| Bitec Milling, Turning, Swiss, Waterjet, EDM, Grinding | Dayton, OH | MillingTurningSwissWaterjetEDMGrinding | - |
| Boyce Machine Milling, Turning, Welding | Kent, OH | MillingTurningWelding | - |
| Brot Inc Laser, Punching, Welding, Stamping, Finishing, Assembly | Cleveland, OH | LaserPunchingWeldingStampingFinishingAssembly | - |
| Budde Sheet Metal Works, Inc. Bending, Laser, Welding | Dayton, OH | BendingLaserWelding | - |
| Columbus Machine Works Milling, Turning, Bending, Welding, EDM, Casting | Columbus, OH | MillingTurningBendingWeldingEDMCasting | - |
| Conti Tool & Die, Inc Milling, Turning, Bending, Welding, Grinding | Akron, OH | MillingTurningBendingWeldingGrinding | - |
| Coronado Steel Co Turning, Welding, Casting, Metal AM | Youngstown, OH | TurningWeldingCastingMetal AM | - |
| Dearborn, Inc Milling, Grinding | Berea, OH | MillingGrinding | - |
| Die-Cut Products Co Bending, Laser, Welding, Waterjet, EDM, Stamping | Cleveland, OH | BendingLaserWeldingWaterjetEDMStamping | - |
| Die-Mension Corp Milling, Turning, Welding, Stamping, EDM, Grinding | Brunswick, OH | MillingTurningWeldingStampingEDMGrinding | - |
| Direct Tooling Concepts LLP Welding, Stamping, EDM, Grinding | Versailles, OH | WeldingStampingEDMGrinding | - |
| Fabriweld Corp Milling, Turning, Laser, Welding, Finishing | Norwalk, OH | MillingTurningLaserWeldingFinishing | - |
| G & W Products, Inc Laser, Punching, Bending, Welding, Stamping, Finishing | Fairfield, OH | LaserPunchingBendingWeldingStampingFinishing | - |
| H & H Machine Shop of Akron Inc Milling, Turning, Welding, Grinding | Akron, OH | MillingTurningWeldingGrinding | - |
| Harvey Brothers Inc Bending, Welding | Cincinnati, OH | BendingWelding | - |
| Horst Manufacturing Co Inc Milling, Turning | Windham, OH | MillingTurning | - |
| HR Machine Turning, Waterjet, EDM | Dayton, OH | TurningWaterjetEDM | - |
| Inno-Tec Welding & Fabrication LLC Welding | Springfield, OH | Welding | - |
| Interlake Stamping of Ohio Inc Stamping, Assembly | Willoughby, OH | StampingAssembly | - |
| Jeb Modern Machines, Limited Turning, EDM | Republic, OH | TurningEDM | - |
| Johnson Manufacturing Systems LLC Milling, Turning, Welding, Grinding | Miamisburg, OH | MillingTurningWeldingGrinding | - |
| Ketco Inc Milling | Beavercreek, OH | Milling | - |
| Kyron Tool & Machine Co., Inc Milling, Turning, Welding | Columbus, OH | MillingTurningWelding | - |
| Lakecraft, Inc Turning, Bending, Welding, Grinding, Finishing | Port Clinton, OH | TurningBendingWeldingGrindingFinishing | - |
| Lange Grinding & Machining, Inc Milling, Turning, Welding, Grinding | Streetsboro, OH | MillingTurningWeldingGrinding | - |
| Logan Machine Co Milling, Turning, Bending, Welding | Akron, OH | MillingTurningBendingWelding | - |
| LR Design+Build Laser, Welding, Metal AM | Columbus, OH | LaserWeldingMetal AM | - |
| Machintek Co Milling, Welding | Fairfield, OH | MillingWelding | - |
| Metzger Machine Co. Milling, Turning, Welding | Cincinnati, OH | MillingTurningWelding | - |
| Midlake Products & Mfg. Co., Inc Turning, Bending, Laser, Welding, Stamping | Canton, OH | TurningBendingLaserWeldingStamping | - |