| Farris Fab & Machine, Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Grinding, Finishing, Assembly | Cherryville, NC | MillingTurningLaserWaterjetPunchingBendingWeldingGrindingFinishingAssembly | - |
| Fastech Precision LLC Milling, Turning, Laser, Waterjet, Bending, Welding · ITAR, CMMC | Bedford, IN | MillingTurningLaserWaterjetBendingWelding | ITAR, CMMC |
| Fathouse Fabrications Laser, Bending, Welding, Finishing | Martinsville, IN | LaserBendingWeldingFinishing | - |
| Fencing Fabrication LLC Welding | North Las Vegas, NV | Welding | - |
| Feral Productions LLC Milling, Turning, Welding, Grinding, Finishing, Assembly | Tracy, CA | MillingTurningWeldingGrindingFinishingAssembly | - |
| Ferry Machine Corp Welding, Finishing, Assembly · ISO 9001, ISO 13485 | Little Ferry, NJ | WeldingFinishingAssembly | ISO 9001, ISO 13485 |
| Feryok & Clarkson Machine and Marine Milling, Turning, Laser, Welding, Waterjet | Seattle, WA | MillingTurningLaserWeldingWaterjet | - |
| First Quality Fabricating Inc. Bending, Laser, Welding | Dallas, TX | BendingLaserWelding | - |
| Five Star Enterprises Milling, Laser, Waterjet, Welding, Stamping, Metal AM, EDM, Finishing | San Marcos, CA | MillingLaserWaterjetWeldingStampingMetal AMEDMFinishing | - |
| FJB Engineering Company Milling, Turning, Welding, Finishing · ISO 9001 | Frederick, MD | MillingTurningWeldingFinishing | ISO 9001 |
| Flint Cliffs Manufacturing Corp Milling, Turning, Laser, Bending, Welding, Stamping, Finishing · ISO 9001 | Burlington, IA | MillingTurningLaserBendingWeldingStampingFinishing | ISO 9001 |
| Florida Machine Works Milling, Turning, Laser, Bending, Welding, Finishing, Assembly | Yulee, FL | MillingTurningLaserBendingWeldingFinishingAssembly | - |
| Florida Metal Stampings Inc Laser, Welding, Stamping, EDM · ISO 9001, ITAR | Seminole, FL | LaserWeldingStampingEDM | ISO 9001, ITAR |
| Focus Manufacturing Services Laser, Waterjet, Bending, Welding · ISO 9001 | Ogden, UT | LaserWaterjetBendingWelding | ISO 9001 |
| Folsom Tool & Mold Corp Milling, Turning, Waterjet, Welding | Aston, PA | MillingTurningWaterjetWelding | - |
| Forceco LLC Welding · ITAR | Saginaw, MI | Welding | ITAR |
| Foremaster Tool Company Milling, Turning, Welding, EDM, Grinding, Assembly | Ogden, UT | MillingTurningWeldingEDMGrindingAssembly | - |
| Forge Precision Co Milling, Turning, Welding · ISO 9001 | Farmington Hills, MI | MillingTurningWelding | ISO 9001 |
| Forster Precision Tool, LLC Milling, Turning, Welding, EDM, Grinding | Seymour, CT | MillingTurningWeldingEDMGrinding | - |
| Fort Walton Machining Inc Milling, Turning, Waterjet, Welding, EDM, Grinding, Finishing · ITAR | Fort Walton Beach, FL | MillingTurningWaterjetWeldingEDMGrindingFinishing | ITAR |
| Foster Works LLC Laser, Punching, Bending, Welding, Stamping, Finishing | Chicago, IL | LaserPunchingBendingWeldingStampingFinishing | - |
| Foundrion Group Welding, Casting | Mills, WY | WeldingCasting | - |
| Foxfab Laser and Machine Inc Milling, Laser, Bending, Welding, Grinding, Finishing | Layton, UT | MillingLaserBendingWeldingGrindingFinishing | - |
| Foxtrot Customs Laser, Welding | Converse, TX | LaserWelding | - |
| Franco Machine Milling, Turning, Welding · AS9100, ITAR | Loma, CO | MillingTurningWelding | AS9100, ITAR |
| Frank Roth Co Inc Welding · ISO 9001, AS9100 | Stratford, CT | Welding | ISO 9001, AS9100 |
| Franklin Sheet Metal, LLC Milling, Laser, Waterjet, Punching, Bending, Welding, Grinding, Finishing · ITAR | Franklin, MA | MillingLaserWaterjetPunchingBendingWeldingGrindingFinishing | ITAR |
| Franklin’s Industries Milling, Turning, Waterjet, Welding, EDM · ISO 9001, AS9100 | Poway, CA | MillingTurningWaterjetWeldingEDM | ISO 9001, AS9100 |
| Fredon Corp Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100, ITAR, NADCAP | Mentor, OH | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100, ITAR, NADCAP |
| Freedom Fabricators Inc Milling, Laser, Waterjet, Punching, Bending, Welding · ISO 9001, AS9100 | Jupiter, FL | MillingLaserWaterjetPunchingBendingWelding | ISO 9001, AS9100 |
| Freedom Manufacturing, LLC Welding, Finishing | Jacksonville, TX | WeldingFinishing | - |
| Freedom Security, LLC Waterjet, Punching, Bending, Welding, Finishing | Salt Lake City, UT | WaterjetPunchingBendingWeldingFinishing | - |
| Frontier Metal Stamping Inc Milling, Bending, Welding, Stamping, Finishing · ISO 9001 | Erie, CO | MillingBendingWeldingStampingFinishing | ISO 9001 |
| Fulcrum Technologies Inc Milling, Laser, Waterjet, Bending, Welding, Finishing | Tualatin, OR | MillingLaserWaterjetBendingWeldingFinishing | - |
| Fulton Technology Corp Milling, Turning, Swiss, Laser, Welding, Finishing · ISO 9001 | Mooresboro, NC | MillingTurningSwissLaserWeldingFinishing | ISO 9001 |
| Future Present Labs Milling, Turning, Laser, Welding, Waterjet, Metal AM | Seattle, WA | MillingTurningLaserWeldingWaterjetMetal AM | - |
| Futuristics Machine, Inc. Welding · ISO 9001 | San Diego, CA | Welding | ISO 9001 |
| G & D Machine Shop Inc Waterjet, Bending, Welding, Finishing | Hammond, LA | WaterjetBendingWeldingFinishing | - |
| G & R Manufacturing Welding, Stamping, Finishing, Assembly · ISO 9001, ITAR | Naugatuck, CT | WeldingStampingFinishingAssembly | ISO 9001, ITAR |
| G & R Metals Milling, Turning, Punching, Bending, Welding, EDM · CMMC | Hampton, VA | MillingTurningPunchingBendingWeldingEDM | CMMC |
| G & W Products, Inc Laser, Punching, Bending, Welding, Stamping, Finishing | Fairfield, OH | LaserPunchingBendingWeldingStampingFinishing | - |
| G. V. Industries, Inc Milling, Turning, Welding, Assembly · ISO 9001, AS9100 | National City, CA | MillingTurningWeldingAssembly | ISO 9001, AS9100 |
| Gadsden Tool Inc Turning, Welding, EDM, Grinding · ISO 9001 | Gadsden, AL | TurningWeldingEDMGrinding | ISO 9001 |
| Gamlet Inc Milling, Laser, Bending, Welding, Stamping, Grinding, Finishing | York, PA | MillingLaserBendingWeldingStampingGrindingFinishing | - |
| Gardner Precision Technologies LLC Milling, Turning, Welding | Forest Hill, TX | MillingTurningWelding | - |
| Gartom CNC, Inc. Milling, Turning, Welding | Rochester, NY | MillingTurningWelding | - |
| GB Fabrication Company Milling, Turning, Laser, Punching, Bending, Welding, Stamping, Grinding, Finishing, Assembly | Shiloh, OH | MillingTurningLaserPunchingBendingWeldingStampingGrindingFinishingAssembly | - |
| Gem State Metals Bending, Welding | Garden City, ID | BendingWelding | - |
| Gemini Manufacturing & Engineering Inc Milling, Laser, Punching, Welding, Finishing · ISO 9001 | Anaheim, CA | MillingLaserPunchingWeldingFinishing | ISO 9001 |
| Gen3 Aerospace, LLC Bending, Welding | Tempe, AZ | BendingWelding | - |