| Lamjen Inc Milling, Turning, Welding, Stamping, Casting · ISO 9001 | Erie, PA | MillingTurningWeldingStampingCasting | ISO 9001 |
| Lawruk Machine & Tool Milling, Turning, Welding, Grinding · ISO 9001 | Altoona, PA | MillingTurningWeldingGrinding | ISO 9001 |
| Jolar Machine Shop Milling, Grinding, Finishing · ISO 9001 | Dickson City, PA | MillingGrindingFinishing | ISO 9001 |
| Clark Metal Products Co Milling, Laser, Punching, Bending, Welding, Finishing, Assembly · ISO 9001 | Blairsville, PA | MillingLaserPunchingBendingWeldingFinishingAssembly | ISO 9001 |
| IronStrong Metal Fabrication LLC Milling, Bending, Laser, Welding | Lancaster, PA | MillingBendingLaserWelding | - |
| Kovlar Precision Manufacturing, Inc Milling | Bedford, PA | Milling | - |
| Metplas Inc Milling, Turning, Waterjet, Punching, Bending, Assembly · ISO 9001 | Natrona Heights, PA | MillingTurningWaterjetPunchingBendingAssembly | ISO 9001 |
| Motive Machine Works LLC Milling, Turning, Stamping, Finishing, Assembly | Lancaster, PA | MillingTurningStampingFinishingAssembly | - |
| Stellar Precision Components. Ltd Milling, Turning, EDM, Grinding · ISO 9001, AS9100 | Jeannette, PA | MillingTurningEDMGrinding | ISO 9001, AS9100 |
| C-B Tool Co Milling, Turning, Welding · ISO 9001 | Lancaster, PA | MillingTurningWelding | ISO 9001 |
| Flex-Cell Precision Inc Milling, Turning, EDM, Finishing | Lancaster, PA | MillingTurningEDMFinishing | - |
| Thomas W Springer Inc Milling, Turning, Swiss, Welding, Grinding · ISO 9001 | Landenberg, PA | MillingTurningSwissWeldingGrinding | ISO 9001 |
| Micro Facture LLC Milling, Turning, EDM, Grinding, Assembly · ISO 9001, ITAR | Lancaster, PA | MillingTurningEDMGrindingAssembly | ISO 9001, ITAR |
| Dixon Tool & Die Co Inc Milling, Turning, Waterjet, Welding, EDM, Grinding · ISO 9001, CMMC | Tyrone, PA | MillingTurningWaterjetWeldingEDMGrinding | ISO 9001, CMMC |
| Aeroparts Fabricating & Machining Inc Milling, Punching, Bending, Finishing · ISO 9001, AS9100, NADCAP | Nicktown, PA | MillingPunchingBendingFinishing | ISO 9001, AS9100, NADCAP |
| Anderson Metal Industries Inc Milling, Turning, Welding, EDM, Grinding, Finishing · ISO 9001, ITAR | Franklin, PA | MillingTurningWeldingEDMGrindingFinishing | ISO 9001, ITAR |
| Apogee Manufacturing Solutions Limited Liability Company Milling, Laser, Punching, Bending, Grinding, Assembly · ISO 9001 | New Holland, PA | MillingLaserPunchingBendingGrindingAssembly | ISO 9001 |
| Augustine Die & Mold Inc Milling, Turning, Waterjet, Stamping, Finishing · ISO 9001, AS9100, ITAR | Somerset, PA | MillingTurningWaterjetStampingFinishing | ISO 9001, AS9100, ITAR |
| Bear Ridge Mach & Fab Inc Milling, Laser, Waterjet, Punching, Bending, Welding, Grinding | Frackville, PA | MillingLaserWaterjetPunchingBendingWeldingGrinding | - |
| Beers Tooling and Machining Milling, Turning, Welding, Finishing · ISO 9001 | Jim Thorpe, PA | MillingTurningWeldingFinishing | ISO 9001 |
| Billet Industries Inc Milling, Turning, Laser, Welding, EDM, Grinding, Assembly · AS9100 | York, PA | MillingTurningLaserWeldingEDMGrindingAssembly | AS9100 |
| 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 Manufacturing Inc Milling, Turning, Swiss, Laser, Grinding · ISO 9001 | Coatesville, PA | MillingTurningSwissLaserGrinding | ISO 9001 |
| CNC Specialties Manufacturing Inc Milling, Turning, Bending, Welding, EDM, Grinding, Finishing | Apollo, PA | MillingTurningBendingWeldingEDMGrindingFinishing | - |
| Compucraft Fabricators Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding, Finishing · ISO 9001, ITAR | Montgomeryville, PA | MillingTurningLaserPunchingBendingWeldingGrindingFinishing | ISO 9001, ITAR |
| Cutting Edge Machining & Automation-Qtr, LLC Milling, Turning, Swiss, Laser, Welding, EDM, Assembly | North Versailles, PA | MillingTurningSwissLaserWeldingEDMAssembly | - |
| Danco Precision, Inc Milling, Turning, Laser, Welding, Stamping, EDM, Grinding, Assembly · ISO 9001, AS9100, ITAR | Phoenixville, PA | MillingTurningLaserWeldingStampingEDMGrindingAssembly | ISO 9001, AS9100, ITAR |
| E.H. Schwab Milling, Turning, Laser, Punching, Bending, Welding · ISO 9001 | Turtle Creek, PA | MillingTurningLaserPunchingBendingWelding | ISO 9001 |
| Edker Industries LLC Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly | Bala Cynwyd, PA | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | - |
| Imperial Carbide Inc Milling, Turning, Welding, Stamping, EDM, Grinding, Finishing · ISO 9001 | Meadville, PA | MillingTurningWeldingStampingEDMGrindingFinishing | ISO 9001 |
| Jenkins Machine Inc Milling, Turning, EDM, Grinding, Finishing | Bethlehem, PA | MillingTurningEDMGrindingFinishing | - |
| Linear Machining Technology LLC Milling, Turning, EDM, Grinding, Finishing · ISO 9001 | Irwin, PA | MillingTurningEDMGrindingFinishing | ISO 9001 |
| M & M Sheet Metal, Inc Milling, Laser, Bending, Welding, Forging · ISO 9001, ITAR, CMMC | Williamsport, PA | MillingLaserBendingWeldingForging | ISO 9001, ITAR, CMMC |
| Max Machine Milling, Turning, Laser, Waterjet, Welding, Grinding, Finishing · ISO 9001 | Elizabethtown, PA | MillingTurningLaserWaterjetWeldingGrindingFinishing | ISO 9001 |
| Max Machining LLC Milling, Turning, Laser, Bending · ITAR, CMMC | Telford, PA | MillingTurningLaserBending | ITAR, CMMC |
| Penn Metal Fabricators Inc Milling, Turning, Laser, Punching, Bending, Welding, Finishing · ISO 9001 | Ebensburg, PA | MillingTurningLaserPunchingBendingWeldingFinishing | ISO 9001 |
| Pennco Tool & Die, Inc Milling, Turning, Welding, Stamping, EDM, Grinding, Finishing · ISO 9001, CMMC | Meadville, PA | MillingTurningWeldingStampingEDMGrindingFinishing | ISO 9001, CMMC |
| Perseo-Erie Machine Sales Milling, Laser, EDM, Stamping | Erie, PA | MillingLaserEDMStamping | - |
| Pga Machine Co Milling, Turning, Waterjet, Welding, Finishing | Eddystone, PA | MillingTurningWaterjetWeldingFinishing | - |
| Pittsburgh Precision Turned Products, LLC Milling, Turning, Grinding, Finishing, Assembly · ISO 9001 | Pittsburgh, PA | MillingTurningGrindingFinishingAssembly | ISO 9001 |
| Pre-Mach Inc Milling, Welding, Grinding, Finishing | York, PA | MillingWeldingGrindingFinishing | - |
| Q Company, LLC Milling, Turning, Welding, Grinding, Finishing · ISO 9001, AS9100, ITAR | New Berlin, PA | MillingTurningWeldingGrindingFinishing | ISO 9001, AS9100, ITAR |
| Qmac-Quality Machining Inc Milling, Turning, Waterjet, Punching, Welding, Finishing · ITAR | Bellefonte, PA | MillingTurningWaterjetPunchingWeldingFinishing | ITAR |
| Reisinger Automation & Design LLC Milling, Turning, Waterjet, Welding, Grinding, Finishing | Reading, PA | MillingTurningWaterjetWeldingGrindingFinishing | - |
| Roaring Creek Machine Co Milling, Turning, Laser, Bending, Welding, Finishing · ITAR | Catawissa, PA | MillingTurningLaserBendingWeldingFinishing | ITAR |
| Shoemaker Mfg Solutions Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Stamping, Grinding · ISO 9001, AS9100, ITAR, CMMC | Souderton, PA | MillingTurningLaserWaterjetPunchingBendingWeldingStampingGrinding | ISO 9001, AS9100, ITAR, CMMC |
| SJD Machining, Inc Milling, Turning, EDM, Grinding, Finishing | Meadville, PA | MillingTurningEDMGrindingFinishing | - |
| Starn Tool & Manufacturing Company Milling, Turning, EDM, Grinding, Finishing · ISO 9001, ITAR | Meadville, PA | MillingTurningEDMGrindingFinishing | ISO 9001, ITAR |
| Summit Machine Company Milling, Turning, Welding, Finishing · ISO 9001 | Alverton, PA | MillingTurningWeldingFinishing | ISO 9001 |