| Lakecity Industries Holding Inc Finishing | Lake City, PA | Finishing | - |
| Aeroparts Fabricating & Machining Inc Milling, Punching, Bending, Finishing · ISO 9001, AS9100, NADCAP | Nicktown, PA | MillingPunchingBendingFinishing | ISO 9001, AS9100, NADCAP |
| Merit Industries Milling, Turning, Laser, Waterjet, Welding, EDM, Grinding, Finishing · AS9100, ITAR, NADCAP, CMMC | Erie, PA | MillingTurningLaserWaterjetWeldingEDMGrindingFinishing | AS9100, ITAR, NADCAP, CMMC |
| Pennco Tool & Die, Inc Milling, Turning, Welding, Stamping, EDM, Grinding, Finishing · ISO 9001, CMMC | Meadville, PA | MillingTurningWeldingStampingEDMGrindingFinishing | ISO 9001, CMMC |
| Tech Met Inc Milling, Finishing · NADCAP | Glassport, PA | MillingFinishing | NADCAP |
| Accrotool, Inc Milling, Turning, Laser, Punching, Bending, Welding, Stamping, Finishing, Assembly | New Kensington, PA | MillingTurningLaserPunchingBendingWeldingStampingFinishingAssembly | - |
| Advanced Metals Machining LLC Milling, Finishing | Olyphant, PA | MillingFinishing | - |
| American Hollow Boring Co Milling, Turning, Grinding, Finishing · ISO 9001 | Erie, PA | MillingTurningGrindingFinishing | ISO 9001 |
| Anderson Metal Industries Inc Milling, Turning, Welding, EDM, Grinding, Finishing · ISO 9001, ITAR | Franklin, PA | MillingTurningWeldingEDMGrindingFinishing | ISO 9001, ITAR |
| Apex Engineered Products Milling, Turning, Waterjet, Welding, Finishing | Clark, PA | MillingTurningWaterjetWeldingFinishing | - |
| Ash-Tec Laser, Welding, Finishing | Hegins, PA | LaserWeldingFinishing | - |
| Beers Tooling and Machining Milling, Turning, Welding, Finishing · ISO 9001 | Jim Thorpe, PA | MillingTurningWeldingFinishing | ISO 9001 |
| Butler Precision Technologies LLC Milling, Turning, Welding, Finishing · AS9100, ITAR | Bristol, PA | MillingTurningWeldingFinishing | AS9100, ITAR |
| C P Precision Inc Milling, Finishing | Warminster, PA | MillingFinishing | - |
| Chick Machine Company, LLC Milling, Turning, Waterjet, Grinding, Finishing · ISO 9001, AS9100, ITAR | Butler, PA | MillingTurningWaterjetGrindingFinishing | ISO 9001, AS9100, ITAR |
| CNC Specialties Manufacturing Inc Milling, Turning, Bending, Welding, EDM, Grinding, Finishing | Apollo, PA | MillingTurningBendingWeldingEDMGrindingFinishing | - |
| Dacval, LLC Welding, Finishing · ISO 9001, AS9100, ITAR | Philadelphia, PA | WeldingFinishing | ISO 9001, AS9100, ITAR |
| Edker Industries LLC Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly | Bala Cynwyd, PA | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | - |
| Erie Plating Co Finishing · ISO 9001, ITAR, NADCAP | Erie, PA | Finishing | ISO 9001, ITAR, NADCAP |
| Gamlet Inc Milling, Laser, Bending, Welding, Stamping, Grinding, Finishing | York, PA | MillingLaserBendingWeldingStampingGrindingFinishing | - |
| Max Machine Milling, Turning, Laser, Waterjet, Welding, Grinding, Finishing · ISO 9001 | Elizabethtown, PA | MillingTurningLaserWaterjetWeldingGrindingFinishing | ISO 9001 |
| PBZ Manufacturing Laser, Bending, Welding, Finishing · ISO 9001 | Lititz, PA | LaserBendingWeldingFinishing | ISO 9001 |
| Pga Machine Co Milling, Turning, Waterjet, Welding, Finishing | Eddystone, PA | MillingTurningWaterjetWeldingFinishing | - |
| Precision Roll Grinders Inc Grinding, Finishing | Allentown, PA | GrindingFinishing | - |
| Q Company, LLC Milling, Turning, Welding, Grinding, Finishing · ISO 9001, AS9100, ITAR | New Berlin, PA | MillingTurningWeldingGrindingFinishing | ISO 9001, AS9100, ITAR |
| Summit Machine Company Milling, Turning, Welding, Finishing · ISO 9001 | Alverton, PA | MillingTurningWeldingFinishing | ISO 9001 |
| The Flinchbaugh Company, Inc Milling, Turning, Welding, EDM, Grinding, Finishing, Assembly | Manchester, PA | MillingTurningWeldingEDMGrindingFinishingAssembly | - |
| Uber Machining Services LLC Milling, Turning, Finishing | Pittsburgh, PA | MillingTurningFinishing | - |
| US Anodize Finishing · NADCAP | Reading, PA | Finishing | NADCAP |