| Dominion Metallurgical Milling, Stamping, Casting, EDM, Grinding, Finishing, Assembly | Roanoke, VA | MillingStampingCastingEDMGrindingFinishingAssembly | - |
| Donahue Industries, Incorporated Milling, Turning, Swiss, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing | Shrewsbury, MA | MillingTurningSwissPunchingBendingWeldingStampingEDMGrindingFinishing | - |
| E & R Machine Grinding, Finishing | Lockport, NY | GrindingFinishing | - |
| E-Sector Machining and Fabrication LLC Milling, Turning, Laser, Bending, Welding, EDM, Grinding · ISO 9001 | Sanford, FL | MillingTurningLaserBendingWeldingEDMGrinding | ISO 9001 |
| E. J. Basler Co Milling, Turning, Swiss, Grinding · ISO 9001 | Schiller Park, IL | MillingTurningSwissGrinding | ISO 9001 |
| Eas Manufacturing Co Milling, Turning, Welding, EDM, Grinding | Camarillo, CA | MillingTurningWeldingEDMGrinding | - |
| Eastern Panhandle Machine Milling, Turning, Welding, Grinding | Burlington, WV | MillingTurningWeldingGrinding | - |
| Eck Fabrication LLC Milling, Turning, Bending, Welding, Grinding | Kingman, KS | MillingTurningBendingWeldingGrinding | - |
| Egs Production Machining, Inc Milling, Turning, Swiss, Grinding, Assembly · ISO 9001 | Irving, TX | MillingTurningSwissGrindingAssembly | ISO 9001 |
| El Metals LLC Waterjet, Casting, Grinding, Finishing | Randolph, NJ | WaterjetCastingGrindingFinishing | - |
| Electro Erosion Specialties, Inc Milling, Turning, Laser, Welding, EDM, Grinding | Renton, WA | MillingTurningLaserWeldingEDMGrinding | - |
| Electronic Sheet Metal Craftsm Milling, Turning, Laser, Punching, Bending, Welding, Grinding, Assembly | Stoughton, MA | MillingTurningLaserPunchingBendingWeldingGrindingAssembly | - |
| Ems Automotive Milling, Turning, Welding, Grinding · ISO 9001, ITAR | Orange, CA | MillingTurningWeldingGrinding | ISO 9001, ITAR |
| Engineered Tooling Systems, Inc Milling, Laser, Welding, Stamping, Casting, Grinding | Grand Rapids, MI | MillingLaserWeldingStampingCastingGrinding | - |
| Engineering Design Industries, Inc Milling, Turning, Laser, Welding, Stamping, EDM, Grinding, Finishing | S El Monte, CA | MillingTurningLaserWeldingStampingEDMGrindingFinishing | - |
| Epic Machine, Inc Milling, Turning, Stamping, Casting, EDM, Grinding, Finishing · ISO 9001 | Fenton, MI | MillingTurningStampingCastingEDMGrindingFinishing | ISO 9001 |
| Estes Design & Manufacturing Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding · ISO 13485 | Indianapolis, IN | MillingTurningLaserPunchingBendingWeldingGrinding | ISO 13485 |
| Evolution Machining, Inc Milling, Turning, Welding, EDM, Grinding, Finishing, Assembly | Logan, UT | MillingTurningWeldingEDMGrindingFinishingAssembly | - |
| Excel Manufacturing Inc Milling, Turning, Swiss, Waterjet, Welding, EDM, Grinding, Finishing · ITAR | Albuquerque, NM | MillingTurningSwissWaterjetWeldingEDMGrindingFinishing | ITAR |
| Excel Tool and Manufacturing, Inc Milling, Turning, Swiss, EDM, Grinding · ISO 9001, AS9100, ITAR | Lenexa, KS | MillingTurningSwissEDMGrinding | ISO 9001, AS9100, ITAR |
| Exotic Sport Products, Inc Milling, Turning, Swiss, Grinding | North Lima, OH | MillingTurningSwissGrinding | - |
| Falcon Prototyping & Machine LLC Milling, Turning, Swiss, Punching, Bending, Welding, EDM, Grinding | Peyton, CO | MillingTurningSwissPunchingBendingWeldingEDMGrinding | - |
| Farris Fab & Machine, Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Grinding, Finishing, Assembly | Cherryville, NC | MillingTurningLaserWaterjetPunchingBendingWeldingGrindingFinishingAssembly | - |
| Fasano Corp Milling, Turning, Swiss, Grinding, Finishing | Cranston, RI | MillingTurningSwissGrindingFinishing | - |
| Foremaster Tool Company Milling, Turning, Welding, EDM, Grinding, Assembly | Ogden, UT | MillingTurningWeldingEDMGrindingAssembly | - |
| Forge Resources Group Turning, Forging, Grinding, Finishing · ISO 9001, AS9100, ITAR | Dekalb, IL | TurningForgingGrindingFinishing | ISO 9001, AS9100, ITAR |
| Forster Precision Tool, LLC Milling, Turning, Welding, EDM, Grinding | Seymour, CT | MillingTurningWeldingEDMGrinding | - |
| Forster Tool & Manufacturing Co Inc Milling, Turning, Swiss, Grinding, Finishing · ISO 9001, AS9100, ITAR, CMMC | Bensenville, IL | MillingTurningSwissGrindingFinishing | ISO 9001, AS9100, ITAR, CMMC |
| Fox Valley Tool & Die Inc Milling, Turning, Waterjet, Stamping, EDM, Grinding | Kaukauna, WI | MillingTurningWaterjetStampingEDMGrinding | - |
| Franklin Sheet Metal, LLC Milling, Laser, Waterjet, Punching, Bending, Welding, Grinding, Finishing · ITAR | Franklin, MA | MillingLaserWaterjetPunchingBendingWeldingGrindingFinishing | ITAR |
| Fredon Corp Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100, ITAR, NADCAP | Mentor, OH | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100, ITAR, NADCAP |
| Gadsden Tool Inc Turning, Welding, EDM, Grinding · ISO 9001 | Gadsden, AL | TurningWeldingEDMGrinding | ISO 9001 |
| Gause Tool, Inc Turning, Welding, Grinding | Goldendale, WA | TurningWeldingGrinding | - |
| GB Fabrication Company Milling, Turning, Laser, Punching, Bending, Welding, Stamping, Grinding, Finishing, Assembly | Shiloh, OH | MillingTurningLaserPunchingBendingWeldingStampingGrindingFinishingAssembly | - |
| General Grinding & Mfg Co LLC Milling, Turning, Welding, Grinding, Finishing · ISO 9001, AS9100 | La Mirada, CA | MillingTurningWeldingGrindingFinishing | ISO 9001, AS9100 |
| General Machine Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Grinding, Finishing | Chicago, IL | MillingTurningLaserWaterjetPunchingBendingWeldingGrindingFinishing | - |
| General Plug and Manufacturing Co Milling, Casting, EDM, Grinding, Finishing · ISO 9001 | Oberlin, OH | MillingCastingEDMGrindingFinishing | ISO 9001 |
| Genesis Precision LLC Milling, Turning, Grinding, Finishing | Phoenix, AZ | MillingTurningGrindingFinishing | - |
| Gentec Manufacturing Inc Milling, Turning, Waterjet, Welding, EDM, Grinding, Finishing · ISO 9001, AS9100, NADCAP, ISO 13485 | San Jose, CA | MillingTurningWaterjetWeldingEDMGrindingFinishing | ISO 9001, AS9100, NADCAP, ISO 13485 |
| Gil-Mar & Associates Inc Milling, Turning, Swiss, Welding, EDM, Grinding, Finishing, Assembly | Garland, TX | MillingTurningSwissWeldingEDMGrindingFinishingAssembly | - |
| Giuliante Machine Tool Inc Milling, Turning, EDM, Grinding, Finishing · ISO 9001, AS9100 | Peekskill, NY | MillingTurningEDMGrindingFinishing | ISO 9001, AS9100 |
| Glemco Inc Milling, Waterjet, Welding, EDM, Grinding · ISO 9001, AS9100, ITAR | Leander, TX | MillingWaterjetWeldingEDMGrinding | ISO 9001, AS9100, ITAR |
| GP Manufacturing Milling, Turning, Welding, EDM, Grinding, Assembly · ISO 9001 | Buchanan, MI | MillingTurningWeldingEDMGrindingAssembly | ISO 9001 |
| Graham Research Inc Milling, Swiss, EDM, Grinding, Finishing · ISO 9001, AS9100, ITAR, ISO 13485 | Minneapolis, MN | MillingSwissEDMGrindingFinishing | ISO 9001, AS9100, ITAR, ISO 13485 |
| Grain Belt Supply Company, Inc Turning, Laser, Waterjet, Bending, Welding, Grinding, Finishing, Assembly | Salina, KS | TurningLaserWaterjetBendingWeldingGrindingFinishingAssembly | - |
| Gromax Precision Die & Mfg., Inc Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing, Assembly · ISO 9001, ITAR | Germantown, WI | PunchingBendingWeldingStampingEDMGrindingFinishingAssembly | ISO 9001, ITAR |
| Gtscientific LLC Milling, Turning, Laser, Welding, Grinding | Honolulu, HI | MillingTurningLaserWeldingGrinding | - |
| Guyer Precision Inc Milling, Turning, Swiss, Grinding, Finishing · ISO 9001, ITAR | Painesville, OH | MillingTurningSwissGrindingFinishing | ISO 9001, ITAR |
| H & H Machine Shop of Akron Inc Milling, Turning, Welding, Grinding | Akron, OH | MillingTurningWeldingGrinding | - |
| H & M Machine Inc Milling, Turning, Welding, Stamping, EDM, Grinding, Finishing | Greendale, WI | MillingTurningWeldingStampingEDMGrindingFinishing | - |