| Chick Machine Company, LLC Milling, Turning, Waterjet, Grinding, Finishing · ISO 9001, AS9100, ITAR | Butler, PA | MillingTurningWaterjetGrindingFinishing | ISO 9001, AS9100, ITAR |
| Clow Stamping Company, Inc Milling, Turning, Laser, Bending, Welding, Stamping, EDM, Grinding, Finishing, Assembly | Merrifield, MN | MillingTurningLaserBendingWeldingStampingEDMGrindingFinishingAssembly | - |
| CM Fabrication, LLC Milling, Laser, Welding, Finishing | Sycamore, IL | MillingLaserWeldingFinishing | - |
| Colburn Manufacturing Company Milling, Turning · ISO 9001, ISO 13485 | Fridley, MN | MillingTurning | ISO 9001, ISO 13485 |
| Colleen & Herb Enterprises Inc Milling, Turning, Welding | Fremont, CA | MillingTurningWelding | - |
| Collins Machine Works Welding, Grinding · CMMC | Portsmouth, VA | WeldingGrinding | CMMC |
| Colonial Welding, LLC Turning, Laser, Bending, Welding, Finishing | Norfolk, VA | TurningLaserBendingWeldingFinishing | - |
| Columbus Machine Works Milling, Turning, Bending, Welding, EDM, Casting | Columbus, OH | MillingTurningBendingWeldingEDMCasting | - |
| Comet Fabricating & Welding Co Laser, Bending, Welding | Rockford, IL | LaserBendingWelding | - |
| Conner Brothers Machine Co., Inc Milling, Turning, Welding, Grinding · ISO 9001 | Bessemer City, NC | MillingTurningWeldingGrinding | ISO 9001 |
| Creative Metal Products Inc Punching, Bending, Welding, Finishing, Assembly · ISO 9001 | Neenah, WI | PunchingBendingWeldingFinishingAssembly | ISO 9001 |
| Custom Tool & Model Corp Milling, Turning, Laser, Bending, Welding, Stamping, EDM, Grinding · ISO 9001, AS9100 | Frankfort, NY | MillingTurningLaserBendingWeldingStampingEDMGrinding | ISO 9001, AS9100 |
| Custom Tooling Co Milling, Turning | Cincinnati, OH | MillingTurning | - |
| D & H Industries Inc Milling, Turning, Laser, Bending, Welding, Stamping, Grinding, Finishing · ISO 9001, ITAR | Oconomowoc, WI | MillingTurningLaserBendingWeldingStampingGrindingFinishing | ISO 9001, ITAR |
| Dechert Dynamics Corp Milling, Turning, Welding, Grinding · ISO 9001 | Palmyra, PA | MillingTurningWeldingGrinding | ISO 9001 |
| Decotron Welding, Metal AM | Dallas, TX | WeldingMetal AM | - |
| Defelice Engineering, Inc Milling, Turning, Bending, Welding, Casting, Grinding | Mooresville, IN | MillingTurningBendingWeldingCastingGrinding | - |
| Design Metal, Inc Milling, Turning, Bending, Welding, Stamping · ISO 9001 | Oak Park, MI | MillingTurningBendingWeldingStamping | ISO 9001 |
| Diamond Manufacturing of Bluffton, Ltd Laser, Welding, Assembly | Bluffton, OH | LaserWeldingAssembly | - |
| Diamond W Custom Machine Works LLC Milling, Turning, Laser, Waterjet, Welding, Finishing | Phillipsburg, KS | MillingTurningLaserWaterjetWeldingFinishing | - |
| Die Craft Milling, Turning, Welding, Waterjet · ISO 9001 | Cincinnati, OH | MillingTurningWeldingWaterjet | ISO 9001 |
| Douglas Machine & Engineering Milling, Turning, Bending, Welding, EDM · ISO 9001, AS9100, ITAR, CMMC | Davenport, IA | MillingTurningBendingWeldingEDM | ISO 9001, AS9100, ITAR, CMMC |
| Drews Fabrication and Welding LLC Welding | Longview, WA | Welding | - |
| Dupage Machine Products, Inc Welding, EDM | Bloomingdale, IL | WeldingEDM | - |
| Dynamic Machine of Detroit Milling, Turning, Casting, Metal AM | Troy, MI | MillingTurningCastingMetal AM | - |
| Dynamic Machining Inc Milling, Turning | South Salt Lake, UT | MillingTurning | - |
| Dynamic Metals LLC Milling, Laser, Bending, Welding, Stamping · AS9100, NADCAP | Elkhart, IN | MillingLaserBendingWeldingStamping | AS9100, NADCAP |
| E.j. Reynolds Company Turning, Laser, Waterjet, Welding | Alvin, TX | TurningLaserWaterjetWelding | - |
| E2e, Mfg LLC Milling, Casting, EDM | Fremont, CA | MillingCastingEDM | - |
| Ebway LLC Milling, Stamping, EDM, Grinding · ISO 9001 | Fort Lauderdale, FL | MillingStampingEDMGrinding | ISO 9001 |
| Ed Dangs Machine Works Inc Milling, Turning, Welding, Grinding, Finishing | Honolulu, HI | MillingTurningWeldingGrindingFinishing | - |
| Edge Machine Works Inc Milling | Hatboro, PA | Milling | - |
| Electronic Sheet Metal Craftsm Milling, Turning, Laser, Punching, Bending, Welding, Grinding, Assembly | Stoughton, MA | MillingTurningLaserPunchingBendingWeldingGrindingAssembly | - |
| Elmira Stamping & Mfg. Corp Bending, Welding, Stamping, Finishing, Assembly · ISO 9001 | Elmira, NY | BendingWeldingStampingFinishingAssembly | ISO 9001 |
| Enterprise Machine Inc. Milling, Turning, Welding, EDM | Cincinnati, OH | MillingTurningWeldingEDM | - |
| Erickson Automatics, Inc Stamping | Isanti, MN | Stamping | - |
| Estes Design & Manufacturing Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding · ISO 13485 | Indianapolis, IN | MillingTurningLaserPunchingBendingWeldingGrinding | ISO 13485 |
| Ewart-Ohlson Machine Company Milling, Turning, Bending · ISO 9001, AS9100 | Cuyahoga Falls, OH | MillingTurningBending | ISO 9001, AS9100 |
| Express Metal Aerospace Inc Punching, Bending · ISO 9001 | Santa Ana, CA | PunchingBending | ISO 9001 |
| Fairview Machine Co Inc Milling, Turning, EDM, Assembly | Topsfield, MA | MillingTurningEDMAssembly | - |
| Fathouse Fabrications Laser, Bending, Welding, Finishing | Martinsville, IN | LaserBendingWeldingFinishing | - |
| Five Star Tool Co., Inc Milling, Turning, Swiss, EDM, Grinding | Rochester, NY | MillingTurningSwissEDMGrinding | - |
| Florida Machine Works Milling, Turning, Laser, Bending, Welding, Finishing, Assembly | Yulee, FL | MillingTurningLaserBendingWeldingFinishingAssembly | - |
| Foster Works LLC Laser, Punching, Bending, Welding, Stamping, Finishing | Chicago, IL | LaserPunchingBendingWeldingStampingFinishing | - |
| Fox Worx Precision LLC Milling, Finishing · ISO 9001, ITAR | Ontario, OR | MillingFinishing | ISO 9001, ITAR |
| Franklin’s Industries Milling, Turning, Waterjet, Welding, EDM · ISO 9001, AS9100 | Poway, CA | MillingTurningWaterjetWeldingEDM | ISO 9001, AS9100 |
| Freedom Manufacturing, LLC Welding, Finishing | Jacksonville, TX | WeldingFinishing | - |
| G & W Products, Inc Laser, Punching, Bending, Welding, Stamping, Finishing | Fairfield, OH | LaserPunchingBendingWeldingStampingFinishing | - |
| Galaxy Precision Inc Milling, Turning, Swiss, Welding · ISO 9001 | Albany, MN | MillingTurningSwissWelding | ISO 9001 |
| Gearles Designs & Manufacturing Milling, Turning, Grinding · AS9100 | Costa Mesa, CA | MillingTurningGrinding | AS9100 |