| Natoma Manufacturing, LLC Milling, Turning, Swiss, Finishing · ISO 9001, AS9100, NADCAP | Norton, KS | MillingTurningSwissFinishing | ISO 9001, AS9100, NADCAP |
| New Brunswick Plating Inc Milling, Casting, Finishing · ISO 9001, AS9100, NADCAP | New Brunswick, NJ | MillingCastingFinishing | ISO 9001, AS9100, NADCAP |
| C & S Machine Products Inc Milling, Turning, Swiss, EDM, Grinding · AS9100, NADCAP, ISO 13485 | Niles, MI | MillingTurningSwissEDMGrinding | AS9100, NADCAP, ISO 13485 |
| Edco Engineering Inc Milling, Bending, Welding · ISO 9001, AS9100, NADCAP | Newington, CT | MillingBendingWelding | ISO 9001, AS9100, NADCAP |
| Integra Cast Milling, Turning, Welding, Casting, Finishing, Assembly · ISO 9001, NADCAP | New Britain, CT | MillingTurningWeldingCastingFinishingAssembly | ISO 9001, NADCAP |
| Patterson Precision Manufacturing Inc Milling, Turning, Stamping, Grinding · ISO 9001, NADCAP | Norton Shores, MI | MillingTurningStampingGrinding | ISO 9001, NADCAP |
| RDS Machine, LLC Milling, Turning, Finishing · ISO 9001, AS9100, ITAR, NADCAP | Newport, NH | MillingTurningFinishing | ISO 9001, AS9100, ITAR, NADCAP |
| Springfield Tool and Die Milling, Turning, Grinding, Assembly | Duncan, SC | MillingTurningGrindingAssembly | - |
| Napoleon Machine LLC Milling, Bending, Welding, Forging, Grinding · ISO 9001, ITAR, CMMC | Napoleon, OH | MillingBendingWeldingForgingGrinding | ISO 9001, ITAR, CMMC |
| Nashville Sheet Metal Bending, Welding | Nashville, TN | BendingWelding | - |
| New London Precision Instruments Inc Milling, Waterjet, EDM, Grinding, Finishing | New Market, MD | MillingWaterjetEDMGrindingFinishing | - |
| Newport Mfg Laser, Welding | Newcastle, WA | LaserWelding | - |
| North Easton Machine Company, Inc Milling, Turning, Swiss · ISO 9001, ITAR, CMMC | North Easton, MA | MillingTurningSwiss | ISO 9001, ITAR, CMMC |
| Northern Machining, Inc Milling, Turning, Welding, Grinding · ISO 9001 | Norfolk, NY | MillingTurningWeldingGrinding | ISO 9001 |
| Nu-Tool Industries Inc Milling, Turning, Punching, Bending, Stamping, Finishing · ISO 9001 | North Royalton, OH | MillingTurningPunchingBendingStampingFinishing | ISO 9001 |
| Aeroparts Fabricating & Machining Inc Milling, Punching, Bending, Finishing · ISO 9001, AS9100, NADCAP | Nicktown, PA | MillingPunchingBendingFinishing | ISO 9001, AS9100, NADCAP |
| Gates Albert, Inc Milling, Turning · ISO 9001, AS9100, NADCAP, IATF 16949 | North Chili, NY | MillingTurning | ISO 9001, AS9100, NADCAP, IATF 16949 |
| Nortek, Inc Milling, Turning, Swiss, Laser, Waterjet, Welding, EDM, Grinding, Finishing · ISO 9001, AS9100, ITAR, NADCAP | West Springfield, MA | MillingTurningSwissLaserWaterjetWeldingEDMGrindingFinishing | ISO 9001, AS9100, ITAR, NADCAP |
| Perry Technology Corporation Milling, Turning, EDM · ISO 9001, AS9100, ITAR, NADCAP | New Hartford, CT | MillingTurningEDM | ISO 9001, AS9100, ITAR, NADCAP |
| A.r.e. Manufacturing, Inc Milling, Turning, Swiss, Laser, Bending, Welding, EDM, Grinding, Finishing · ISO 9001 | Newberg, OR | MillingTurningSwissLaserBendingWeldingEDMGrindingFinishing | ISO 9001 |
| Abrasive Waterjet of Indiana, LLC Laser, Waterjet, Bending, EDM · ISO 9001 | Noblesville, IN | LaserWaterjetBendingEDM | ISO 9001 |
| Acadiana Manufacturing, LLC Milling, Turning | New Iberia, LA | MillingTurning | - |
| Accurate Marking Products, Inc Milling, Turning, EDM · ISO 9001, AS9100, ITAR | New Kensington, PA | MillingTurningEDM | ISO 9001, AS9100, ITAR |
| ACE Machine & Metal Fab Co Milling, Turning, Bending, Welding · ISO 9001 | Nashville, TN | MillingTurningBendingWelding | ISO 9001 |
| Allied Machining Co., Inc Milling, Turning, Welding, EDM, Grinding, Finishing, Assembly | Newington, CT | MillingTurningWeldingEDMGrindingFinishingAssembly | - |
| Ameritec Machining, Inc Milling, Turning · ISO 9001 | New Hampton, IA | MillingTurning | ISO 9001 |
| Atomic Machine & EDM Inc Milling, Turning, Swiss, EDM, Finishing · ISO 9001, ITAR, ISO 13485 | Naples, FL | MillingTurningSwissEDMFinishing | ISO 9001, ITAR, ISO 13485 |
| Azt Technology LLC Milling · ISO 9001, ITAR | Naples, FL | Milling | ISO 9001, ITAR |
| B & F Machine Co., Inc Milling, Welding, EDM, Grinding · ISO 9001, AS9100 | New Britain, CT | MillingWeldingEDMGrinding | ISO 9001, AS9100 |
| B&L Machine & Fabrication Inc Milling, Turning, Punching, Bending, Welding | Norfolk, VA | MillingTurningPunchingBendingWelding | - |
| Baker Engineering, LLC Milling, Turning, Welding · ISO 9001, AS9100 | Nunica, MI | MillingTurningWelding | ISO 9001, AS9100 |
| Bland Brothers Enterprises Milling, Welding, Assembly | Springfield, IL | MillingWeldingAssembly | - |
| Brodeur Machine Company, Inc Milling, Turning, Laser, Waterjet, Welding, EDM, Grinding | New Bedford, MA | MillingTurningLaserWaterjetWeldingEDMGrinding | - |
| Brooks Industrial, LLC Milling, Grinding, Finishing | North Attleboro, MA | MillingGrindingFinishing | - |
| Budde Enterprises Inc Bending, Welding, Casting | Newton, KS | BendingWeldingCasting | - |
| Churchmen's Machine Company Milling, Turning, Laser, Waterjet, Welding, Grinding, Finishing | North East, MD | MillingTurningLaserWaterjetWeldingGrindingFinishing | - |
| Cimtech Inc Bending, Welding, Stamping | New Albany, IN | BendingWeldingStamping | - |
| Colonial Welding, LLC Turning, Laser, Bending, Welding, Finishing | Norfolk, VA | TurningLaserBendingWeldingFinishing | - |
| Creations Unlimited Machining, Inc Milling | Nampa, ID | Milling | - |
| Creative CNC LLC Milling | New Berlin, WI | Milling | - |
| Creed Monarch Milling, Turning, Grinding · ISO 9001 | New Britain, CT | MillingTurningGrinding | ISO 9001 |
| Crystal Engineering Co., Inc Milling, Stamping | Newburyport, MA | MillingStamping | - |
| Cumberland Machine Co Milling, Turning, Welding | Nashville, TN | MillingTurningWelding | - |
| Custom Machine & Welding, Inc Turning, Waterjet, Bending, Welding, Grinding, Finishing | North Augusta, SC | TurningWaterjetBendingWeldingGrindingFinishing | - |
| Custom Manufacturing & Polishing Inc Waterjet, Welding | Springfield, MO | WaterjetWelding | - |
| Cutting Edge Machining & Automation-Qtr, LLC Milling, Turning, Swiss, Laser, Welding, EDM, Assembly | North Versailles, PA | MillingTurningSwissLaserWeldingEDMAssembly | - |
| Cutting Edge Manufacturing Milling, Turning, Assembly · ISO 9001, AS9100 | Newbury Park, CA | MillingTurningAssembly | ISO 9001, AS9100 |
| Damco, Inc Milling, Turning, Waterjet, Welding | New Bern, NC | MillingTurningWaterjetWelding | - |
| Dynamic Design & Manufacturing Inc Laser, Punching, Bending, Welding, EDM · ISO 9001, AS9100, ITAR | Niwot, CO | LaserPunchingBendingWeldingEDM | ISO 9001, AS9100, ITAR |
| Exotic Sport Products, Inc Milling, Turning, Swiss, Grinding | North Lima, OH | MillingTurningSwissGrinding | - |