| CB Machining & Engineering Inc Milling, Turning, Swiss · ISO 9001, AS9100, ITAR | Buffalo, MN | MillingTurningSwiss | ISO 9001, AS9100, ITAR |
| CCT Enterprises, LLC Milling, Turning, Swiss, Stamping, EDM, Assembly · ISO 9001, AS9100, ITAR, IATF 16949, CMMC | Auburn, IN | MillingTurningSwissStampingEDMAssembly | ISO 9001, AS9100, ITAR, IATF 16949, CMMC |
| Classic Metal Finishing, Inc Milling, Swiss, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP | Jackson, MI | MillingSwissGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP |
| Classic Turning Inc Milling, Turning, Swiss, Finishing | Jackson, MI | MillingTurningSwissFinishing | - |
| Clearshot Manufacturing LLC Milling, Swiss, Grinding, Finishing · ISO 9001 | Germantown, WI | MillingSwissGrindingFinishing | ISO 9001 |
| CNC Innotech LLC Milling, Turning, Swiss | Ogdensburg, NJ | MillingTurningSwiss | - |
| CNC Machining & Engineering Inc Milling, Turning, Swiss | Ontario, CA | MillingTurningSwiss | - |
| CNC Manufacturing Corp Milling, Turning, Swiss · ISO 9001, AS9100 | Long Is City, NY | MillingTurningSwiss | ISO 9001, AS9100 |
| CNC Manufacturing Inc Milling, Turning, Swiss, Laser, Grinding · ISO 9001 | Coatesville, PA | MillingTurningSwissLaserGrinding | ISO 9001 |
| Connecta Corp Milling, Turning, Swiss | Indianapolis, IN | MillingTurningSwiss | - |
| Copen Machine, Inc Milling, Turning, Swiss, Welding, Grinding · ISO 9001 | Kent, OH | MillingTurningSwissWeldingGrinding | ISO 9001 |
| Cox Manufacturing Co Milling, Turning, Swiss, EDM · ISO 9001, ITAR | San Antonio, TX | MillingTurningSwissEDM | ISO 9001, ITAR |
| Crucial Component Machining LLC Milling, Turning, Swiss, EDM | Concord, NH | MillingTurningSwissEDM | - |
| Custom Tool Inc Milling, Swiss · ISO 9001 | Cookeville, TN | MillingSwiss | ISO 9001 |
| Cutting Edge Machining & Automation-Qtr, LLC Milling, Turning, Swiss, Laser, Welding, EDM, Assembly | North Versailles, PA | MillingTurningSwissLaserWeldingEDMAssembly | - |
| D&D Enterprises of Greensboro Inc Milling, Turning, Swiss, Assembly · ISO 9001, AS9100 | Randleman, NC | MillingTurningSwissAssembly | ISO 9001, AS9100 |
| David Packard Company, Inc Milling, Turning, Swiss, Grinding, Finishing, Assembly · ISO 9001, ITAR | Oxford, MA | MillingTurningSwissGrindingFinishingAssembly | ISO 9001, ITAR |
| Davinci Machining Milling, Turning, Swiss | Pinellas Park, FL | MillingTurningSwiss | - |
| Decker Machine Works Inc Milling, Turning, Swiss, EDM, Grinding · ISO 9001, AS9100, ITAR | Greenfield, MA | MillingTurningSwissEDMGrinding | ISO 9001, AS9100, ITAR |
| Deking Precision Inc Turning, Swiss · ISO 9001, AS9100 | Chatsworth, CA | TurningSwiss | ISO 9001, AS9100 |
| Delta Hi-Tech Milling, Turning, Swiss, Laser, Bending, Welding, EDM, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 | Chatsworth, CA | MillingTurningSwissLaserBendingWeldingEDMFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 |
| Demco Products Milling, Turning, Swiss, Finishing, Assembly · ISO 9001 | Oak Lawn, IL | MillingTurningSwissFinishingAssembly | ISO 9001 |
| Denny Grice Inc Turning, Swiss, Grinding, Finishing | Three Rivers, MI | TurningSwissGrindingFinishing | - |
| Dgworks Mfg. LLC Turning, Swiss · ISO 9001, AS9100, ITAR | Estacada, OR | TurningSwiss | ISO 9001, AS9100, ITAR |
| Die Technology, Inc Milling, Turning, Swiss, Bending, Stamping, EDM, Grinding · ISO 9001, CMMC | Saint Michael, MN | MillingTurningSwissBendingStampingEDMGrinding | ISO 9001, CMMC |
| Dimensional Swiss Products, Inc Milling, Turning, Swiss · ISO 9001 | Huntingdon, TN | MillingTurningSwiss | ISO 9001 |
| Donahue Industries, Incorporated Milling, Turning, Swiss, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing | Shrewsbury, MA | MillingTurningSwissPunchingBendingWeldingStampingEDMGrindingFinishing | - |
| DP Machining Inc Milling, Turning, Swiss, Stamping, Finishing | La Verne, CA | MillingTurningSwissStampingFinishing | - |
| DT Precision, LLC Milling, Turning, Swiss · ISO 9001, AS9100, ITAR, ISO 13485 | San Jose, CA | MillingTurningSwiss | ISO 9001, AS9100, ITAR, ISO 13485 |
| Dunham Products, Inc Milling, Turning, Swiss, Grinding, Finishing · ISO 9001 | Walton Hills, OH | MillingTurningSwissGrindingFinishing | ISO 9001 |
| Dynacut Manufacturing LLC Milling, Turning, Swiss, Finishing · ISO 9001 | Lees Summit, MO | MillingTurningSwissFinishing | ISO 9001 |
| E. J. Basler Co Milling, Turning, Swiss, Grinding · ISO 9001 | Schiller Park, IL | MillingTurningSwissGrinding | ISO 9001 |
| Echelbarger Precision Machining Milling, Swiss, Waterjet, Bending, Welding, EDM, Finishing · ISO 9001 | Kokomo, IN | MillingSwissWaterjetBendingWeldingEDMFinishing | ISO 9001 |
| Eds Precision Manufacturing LLC Milling, Turning, Swiss, Metal AM, EDM · ISO 9001, ITAR | Houston, TX | MillingTurningSwissMetal AMEDM | ISO 9001, ITAR |
| Egs Production Machining, Inc Milling, Turning, Swiss, Grinding, Assembly · ISO 9001 | Irving, TX | MillingTurningSwissGrindingAssembly | ISO 9001 |
| Enterprise CNC Machining LLC Milling, Turning, Swiss, Welding, Casting | Mankato, MN | MillingTurningSwissWeldingCasting | - |
| Etek Tool & Manufacturing LLC Milling, Turning, Swiss, Welding, Finishing, Assembly · ISO 9001 | Cedarburg, WI | MillingTurningSwissWeldingFinishingAssembly | ISO 9001 |
| Eton Machine Company Limited Milling, Turning, Swiss, Grinding, Assembly · ISO 9001 | Elgin, IL | MillingTurningSwissGrindingAssembly | ISO 9001 |
| Evergreen Tool Company Inc Milling, Turning, Swiss | Peshtigo, WI | MillingTurningSwiss | - |
| Exact CNC Industries Inc Milling, Turning, Swiss, Laser · ISO 9001, AS9100, ITAR | Chatsworth, CA | MillingTurningSwissLaser | ISO 9001, AS9100, ITAR |
| Excel Machine & Fabrication Inc Milling, Turning, Swiss, Welding | Baltimore, MD | MillingTurningSwissWelding | - |
| 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 |
| Excell Industries Milling, Turning, Swiss, Welding · ISO 9001 | Chambersburg, PA | MillingTurningSwissWelding | ISO 9001 |
| Exotic Sport Products, Inc Milling, Turning, Swiss, Grinding | North Lima, OH | MillingTurningSwissGrinding | - |
| Expedite Precision Works Inc Milling, Turning, Swiss, Welding, EDM, Finishing · ISO 9001, AS9100, ITAR, ISO 13485 | San Jose, CA | MillingTurningSwissWeldingEDMFinishing | ISO 9001, AS9100, ITAR, ISO 13485 |
| Fairchild Precision Parts Milling, Turning, Swiss, Stamping, Grinding, Finishing · ISO 9001, AS9100, ITAR | Winsted, CT | MillingTurningSwissStampingGrindingFinishing | ISO 9001, AS9100, ITAR |
| Falcon Prototyping & Machine LLC Milling, Turning, Swiss, Punching, Bending, Welding, EDM, Grinding | Peyton, CO | MillingTurningSwissPunchingBendingWeldingEDMGrinding | - |
| Farrell Brothers Holding Corp Milling, Turning, Swiss · ISO 9001, ISO 13485 | Anaheim, CA | MillingTurningSwiss | ISO 9001, ISO 13485 |
| Fasano Corp Milling, Turning, Swiss, Grinding, Finishing | Cranston, RI | MillingTurningSwissGrindingFinishing | - |