| King Tek EDM & Precision Machining Milling, Bending, Welding, EDM · ISO 9001, AS9100, ITAR, NADCAP | Anaheim, CA | MillingBendingWeldingEDM | ISO 9001, AS9100, ITAR, NADCAP |
| Korzan Enterprises Inc Milling, Turning, Waterjet, Welding, EDM, Grinding, Finishing | Orchard Park, NY | MillingTurningWaterjetWeldingEDMGrindingFinishing | - |
| Kosmo Machine Inc Milling, Turning, Welding, Casting, EDM | Sandston, VA | MillingTurningWeldingCastingEDM | - |
| Kriewall Enterprises Inc Milling, Laser, Welding, Stamping, EDM, Finishing · ISO 9001 | Romeo, MI | MillingLaserWeldingStampingEDMFinishing | ISO 9001 |
| L. C. S. Co Laser, Welding, Stamping, EDM · ISO 9001, AS9100, ITAR, NADCAP | Saint Paul, MN | LaserWeldingStampingEDM | ISO 9001, AS9100, ITAR, NADCAP |
| L&B Labs Milling, Turning, Laser, Welding, EDM, Grinding | San Jose, CA | MillingTurningLaserWeldingEDMGrinding | - |
| Lad Engineering LLC Milling, Turning, EDM · ISO 9001, AS9100 | Albuquerque, NM | MillingTurningEDM | ISO 9001, AS9100 |
| Lean Manufacturing Group LLC Milling, Turning, EDM · AS9100, ITAR | Valencia, CA | MillingTurningEDM | AS9100, ITAR |
| Lee Precision Machine Shop Inc. Milling, Turning, Bending, Welding, EDM · ISO 9001, ITAR | Athens, AL | MillingTurningBendingWeldingEDM | ISO 9001, ITAR |
| Leiss Tool & Die Co Milling, Turning, Bending, Welding, Stamping, EDM, Grinding | Somerset, PA | MillingTurningBendingWeldingStampingEDMGrinding | - |
| Liberty Precision Company Milling, Turning, EDM, Grinding, Assembly · ISO 9001 | Houston, TX | MillingTurningEDMGrindingAssembly | ISO 9001 |
| Lodolce Machine Co, Inc Milling, Turning, Laser, Welding, EDM, Assembly · ISO 9001, AS9100 | Saugerties, NY | MillingTurningLaserWeldingEDMAssembly | ISO 9001, AS9100 |
| Lomar Machine & Tool Co Milling, Turning, Laser, Bending, Welding, Casting, EDM, Grinding, Finishing · ISO 9001 | Horton, MI | MillingTurningLaserBendingWeldingCastingEDMGrindingFinishing | ISO 9001 |
| Luso Machine NJ, LLC Milling, Turning, Welding, EDM · ISO 9001 | Newark, NJ | MillingTurningWeldingEDM | ISO 9001 |
| M & S Machining Inc Milling, Turning, Bending, Welding, EDM, Assembly · ISO 9001, AS9100, ITAR | Winchester, KY | MillingTurningBendingWeldingEDMAssembly | ISO 9001, AS9100, ITAR |
| M W M Services, Inc Milling, Welding, EDM | Riviera Beach, FL | MillingWeldingEDM | - |
| Machine Works, L.L.C Milling, Turning, EDM, Grinding · ISO 9001, ITAR | Phoenix, AZ | MillingTurningEDMGrinding | ISO 9001, ITAR |
| Machining Tech Milling, Turning, Waterjet, Welding, Stamping, EDM, Grinding | Hazle Township, PA | MillingTurningWaterjetWeldingStampingEDMGrinding | - |
| Magna Machine & Tool Co Inc Milling, Turning, Waterjet, Welding, EDM, Grinding | New Castle, IN | MillingTurningWaterjetWeldingEDMGrinding | - |
| Magnolia Machine Company Milling, Turning, Welding, EDM, Grinding | Auburndale, FL | MillingTurningWeldingEDMGrinding | - |
| Majestic Metals by Fathom Manufacturing Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Casting, Metal AM · ISO 9001, AS9100, ITAR, ISO 13485 | Denver, CO | MillingTurningBendingLaserWeldingWaterjetEDMCastingMetal AM | ISO 9001, AS9100, ITAR, ISO 13485 |
| Marion Manufacturing Milling, Turning, Welding, Stamping, EDM · AS9100 | West Terre Haute, IN | MillingTurningWeldingStampingEDM | AS9100 |
| Marion Mold & Tool Inc Milling, Turning, Waterjet, EDM, Grinding · ISO 9001, AS9100 | Marion, VA | MillingTurningWaterjetEDMGrinding | ISO 9001, AS9100 |
| Mathias Die Co Inc Milling, Laser, Waterjet, Stamping, EDM · ISO 9001, ITAR | South Saint Paul, MN | MillingLaserWaterjetStampingEDM | ISO 9001, ITAR |
| MBK Machine Corp Milling, Turning, Laser, EDM, Grinding · ITAR | Mead, CO | MillingTurningLaserEDMGrinding | ITAR |
| McKenzie Machining Inc Milling, Turning, EDM, Grinding · ISO 9001, AS9100, ITAR | San Jose, CA | MillingTurningEDMGrinding | ISO 9001, AS9100, ITAR |
| McQuillen Manufacturing LLC Milling, EDM · ISO 9001, AS9100, ITAR | Honeoye Falls, NY | MillingEDM | ISO 9001, AS9100, ITAR |
| Mean Machine LLC Milling, Turning, EDM | Logan, UT | MillingTurningEDM | - |
| Mercer Machine Company, Inc Milling, Turning, EDM · AS9100 | Camby, IN | MillingTurningEDM | AS9100 |
| Meridian Manufacturing Inc Milling, Turning, Laser, Welding, EDM, Grinding, Finishing | Ballston Spa, NY | MillingTurningLaserWeldingEDMGrindingFinishing | - |
| Meta-Tech Industries, Inc Milling, Turning, Welding, EDM, Finishing · ISO 9001 | Houston, TX | MillingTurningWeldingEDMFinishing | ISO 9001 |
| Michigan CNC Tool, Inc Milling, Turning, EDM, Grinding · ISO 9001 | Whitmore Lake, MI | MillingTurningEDMGrinding | ISO 9001 |
| Micro-Tec, Inc Milling, Turning, Welding, EDM, Finishing · ISO 9001, AS9100 | Chatsworth, CA | MillingTurningWeldingEDMFinishing | ISO 9001, AS9100 |
| Micron Precision Machining Inc Milling, Turning, EDM, Grinding | Saginaw, MI | MillingTurningEDMGrinding | - |
| Midwest Precision LLC Milling, Turning, Casting, EDM, Grinding, Assembly · ISO 9001, ITAR | Eastlake, OH | MillingTurningCastingEDMGrindingAssembly | ISO 9001, ITAR |
| Midwest Tool Inc Milling, Turning, Welding, EDM, Grinding | Joplin, MO | MillingTurningWeldingEDMGrinding | - |
| Milco Wire EDM Inc Waterjet, Stamping, EDM · AS9100, ITAR, NADCAP | Huntington Beach, CA | WaterjetStampingEDM | AS9100, ITAR, NADCAP |
| Mono Engineering Corp Turning, Welding, EDM · ISO 9001 | Chatsworth, CA | TurningWeldingEDM | ISO 9001 |
| Monsees Tool & Die Inc Milling, Turning, EDM, Grinding, Finishing | Rochester, NY | MillingTurningEDMGrindingFinishing | - |
| Mountain View Machine and Welding Milling, Turning, Waterjet, Welding, EDM | Logan, UT | MillingTurningWaterjetWeldingEDM | - |
| MPM, Inc Milling, Welding, EDM | Wichita, KS | MillingWeldingEDM | - |
| Multi Machining Capabilities, Inc. Milling, Turning, EDM | Romulus, MI | MillingTurningEDM | - |
| Nanotech Precision LLC Milling, Turning, Swiss, Laser, EDM, Finishing · ISO 13485, CMMC | Saint Michael, MN | MillingTurningSwissLaserEDMFinishing | ISO 13485, CMMC |
| National Metal Stampings - Temecula Valley Milling, Turning, Welding, Stamping, EDM, Grinding · ISO 9001 | Lancaster, CA | MillingTurningWeldingStampingEDMGrinding | ISO 9001 |
| New England Foundry LLC Milling, Bending, Welding, Stamping, Casting, EDM, Grinding, Finishing · ISO 9001 | Taunton, MA | MillingBendingWeldingStampingCastingEDMGrindingFinishing | ISO 9001 |
| New London Precision Instruments Inc Milling, Waterjet, EDM, Grinding, Finishing | New Market, MD | MillingWaterjetEDMGrindingFinishing | - |
| Next Level Manufacturing LLC Milling, Turning, Waterjet, EDM | Jenison, MI | MillingTurningWaterjetEDM | - |
| NJ Precision Technologies Inc Milling, Welding, Stamping, EDM, Finishing · ISO 9001, AS9100, ITAR, ISO 13485 | Mountainside, NJ | MillingWeldingStampingEDMFinishing | ISO 9001, AS9100, ITAR, ISO 13485 |
| Nolan's Machine Shop, Inc Milling, Turning, Welding, EDM, Grinding | Lafayette, LA | MillingTurningWeldingEDMGrinding | - |
| North Carolina Manufacturing Inc Milling, Turning, EDM, Grinding · ISO 9001, AS9100 | Goldsboro, NC | MillingTurningEDMGrinding | ISO 9001, AS9100 |