| T-Tygart Industries, Inc Milling, Turning, Bending, Welding, Grinding | Carmichaels, PA | MillingTurningBendingWeldingGrinding | - |
| The Charles Schillinger Co., Inc Turning, Welding, Stamping · ISO 9001 | Bensalem, PA | TurningWeldingStamping | ISO 9001 |
| Tri-Form Inc Welding, Assembly · AS9100 | Arnold, PA | WeldingAssembly | AS9100 |
| Trimmaster Milling, Turning, Waterjet, Welding, Assembly · ISO 9001, ITAR | Temple, PA | MillingTurningWaterjetWeldingAssembly | ISO 9001, ITAR |
| Venango Machine Company, Inc Milling, Welding, Grinding · ISO 9001 | Wattsburg, PA | MillingWeldingGrinding | ISO 9001 |
| Vptt Armaments Milling, Turning, Laser, Waterjet, Bending, Welding, Stamping, EDM, Grinding, Assembly · ISO 9001, ITAR | Tower City, PA | MillingTurningLaserWaterjetBendingWeldingStampingEDMGrindingAssembly | ISO 9001, ITAR |
| Zober Industries, Inc Milling, Turning, Welding, EDM, Assembly · ISO 9001, ISO 13485 | Croydon, PA | MillingTurningWeldingEDMAssembly | ISO 9001, ISO 13485 |
| Ab Precision Grinding Co Inc Milling, Grinding · ISO 9001, AS9100, CMMC | Easton, PA | MillingGrinding | ISO 9001, AS9100, CMMC |
| Accurate Marking Products, Inc Milling, Turning, EDM · ISO 9001, AS9100, ITAR | New Kensington, PA | MillingTurningEDM | ISO 9001, AS9100, ITAR |
| Aeroparts Fabricating & Machining Inc Milling, Punching, Bending, Finishing · ISO 9001, AS9100, NADCAP | Nicktown, PA | MillingPunchingBendingFinishing | ISO 9001, AS9100, NADCAP |
| Apogee Manufacturing Solutions Limited Liability Company Milling, Laser, Punching, Bending, Grinding, Assembly · ISO 9001 | New Holland, PA | MillingLaserPunchingBendingGrindingAssembly | ISO 9001 |
| Atomatic Manufacturing Co Welding, Waterjet | East Pittsburgh, PA | WeldingWaterjet | - |
| B & W Machine Works, Inc Milling, Turning, Swiss, Grinding, Finishing · AS9100, NADCAP | Perkasie, PA | MillingTurningSwissGrindingFinishing | AS9100, NADCAP |
| B-Tec Solutions Inc Milling, Turning, Welding, Stamping, EDM, Grinding, Assembly · ISO 9001, AS9100 | Croydon, PA | MillingTurningWeldingStampingEDMGrindingAssembly | ISO 9001, AS9100 |
| Bauer Machining LLC Welding, Grinding | Fenelton, PA | WeldingGrinding | - |
| Baum Precision Machining Inc Milling, Turning, Assembly · ISO 9001, AS9100, ITAR | Pipersville, PA | MillingTurningAssembly | ISO 9001, AS9100, ITAR |
| BCL Manufacturing Inc Laser, Punching, Welding | Windber, PA | LaserPunchingWelding | - |
| Beers Tooling and Machining Milling, Turning, Welding, Finishing · ISO 9001 | Jim Thorpe, PA | MillingTurningWeldingFinishing | ISO 9001 |
| C-B Tool Co Milling, Turning, Welding · ISO 9001 | Lancaster, PA | MillingTurningWelding | ISO 9001 |
| Chick Machine Company, LLC Milling, Turning, Waterjet, Grinding, Finishing · ISO 9001, AS9100, ITAR | Butler, PA | MillingTurningWaterjetGrindingFinishing | ISO 9001, AS9100, ITAR |
| Clifford CNC Tooling Surgeon, LLC EDM | New Oxford, PA | EDM | - |
| Conturo Prototyping, LLC Milling, Turning | Pittsburgh, PA | MillingTurning | - |
| Corcoran Sheet Metal Bending, Welding | Pittsburgh, PA | BendingWelding | - |
| Edge Machine Works Inc Milling | Hatboro, PA | Milling | - |
| Enhanced Technologies, Inc Milling, Turning, Stamping, Grinding | Palmyra, PA | MillingTurningStampingGrinding | - |
| Erie Plating Co Finishing · ISO 9001, ITAR, NADCAP | Erie, PA | Finishing | ISO 9001, ITAR, NADCAP |
| Exact Machine Service Inc Milling, Turning | York, PA | MillingTurning | - |
| Foranne Manufacturing, Inc Milling, Turning · ISO 9001 | Warminster, PA | MillingTurning | ISO 9001 |
| General Manufacturing Co Milling, Turning, Finishing, Assembly · ISO 9001, ITAR | Bethel Park, PA | MillingTurningFinishingAssembly | ISO 9001, ITAR |
| Great Lakes Automation Services Inc Welding, Assembly · ITAR | Mc Kean, PA | WeldingAssembly | ITAR |
| Great Lakes Metal Finishing Inc Finishing | Erie, PA | Finishing | - |
| H & H Machine Product Milling, Turning | Erie, PA | MillingTurning | - |
| H R Edgar Machining & Fabricating, Inc Milling, Turning, Waterjet, Welding · ISO 9001 | New Kensington, PA | MillingTurningWaterjetWelding | ISO 9001 |
| Hennemuth Metal Fabricators Bending, Welding, Waterjet | Oakdale, PA | BendingWeldingWaterjet | - |
| Industrial Sales & Manufacturing, Inc. Milling, Turning, Bending, Laser, Welding · ISO 9001 | Erie, PA | MillingTurningBendingLaserWelding | ISO 9001 |
| Insaco Inc Milling, Grinding · ITAR | Quakertown, PA | MillingGrinding | ITAR |
| J.V. Manufacturing Co Inc Stamping, EDM, Grinding · ISO 9001 | Natrona Heights, PA | StampingEDMGrinding | ISO 9001 |
| Jennison Corp Turning, Laser, EDM | Carnegie, PA | TurningLaserEDM | - |
| Jolar Machine Shop Milling, Grinding, Finishing · ISO 9001 | Dickson City, PA | MillingGrindingFinishing | ISO 9001 |
| King Precision Solutions Milling, Turning, Welding, EDM · ISO 9001, ITAR | Erie, PA | MillingTurningWeldingEDM | ISO 9001, ITAR |
| Kuhn Tool & Die Co Milling, Waterjet, Welding, Stamping, EDM, Grinding | Meadville, PA | MillingWaterjetWeldingStampingEDMGrinding | - |
| Lakecity Industries Holding Inc Finishing | Lake City, PA | Finishing | - |
| Lakeview Forge Co Forging · ITAR | Erie, PA | Forging | ITAR |
| Lawruk Machine & Tool Milling, Turning, Welding, Grinding · ISO 9001 | Altoona, PA | MillingTurningWeldingGrinding | ISO 9001 |
| Leiss Tool & Die Co Milling, Turning, Bending, Welding, Stamping, EDM, Grinding | Somerset, PA | MillingTurningBendingWeldingStampingEDMGrinding | - |
| Max Machining LLC Milling, Turning, Laser, Bending · ITAR, CMMC | Telford, PA | MillingTurningLaserBending | ITAR, CMMC |
| Merit Industries Milling, Turning, Laser, Waterjet, Welding, EDM, Grinding, Finishing · AS9100, ITAR, NADCAP, CMMC | Erie, PA | MillingTurningLaserWaterjetWeldingEDMGrindingFinishing | AS9100, ITAR, NADCAP, CMMC |
| Metplas Inc Milling, Turning, Waterjet, Punching, Bending, Assembly · ISO 9001 | Natrona Heights, PA | MillingTurningWaterjetPunchingBendingAssembly | ISO 9001 |
| Navitek Machining Corp Milling, Turning, EDM, Grinding, Assembly · AS9100, ISO 13485 | Fairview, PA | MillingTurningEDMGrindingAssembly | AS9100, ISO 13485 |
| Olympus Machining Milling, Turning · ITAR, CMMC | Hanover, PA | MillingTurning | ITAR, CMMC |