| Lima Sheet Metal Machine and Mfg., Inc Turning, Bending, Welding, Grinding | Lima, OH | TurningBendingWeldingGrinding | - |
| North Machine & Fabrication LLC Milling, Bending, Welding, Finishing | Chugiak, AK | MillingBendingWeldingFinishing | - |
| North Second Street Steel Laser, Welding | Minneapolis, MN | LaserWelding | - |
| Northern Lucus Machine Shop Turning, Punching, Welding | Lubbock, TX | TurningPunchingWelding | - |
| Northern Machining & Repair, Inc Milling, Turning, Welding | Escanaba, MI | MillingTurningWelding | - |
| Northern Machining, Inc Milling, Turning, Welding, Grinding · ISO 9001 | Norfolk, NY | MillingTurningWeldingGrinding | ISO 9001 |
| Northfield Manufacturing, Inc Welding, Casting | Westland, MI | WeldingCasting | - |
| Northway Mathers Inc Milling, Turning, Waterjet, Bending, Welding, Finishing | Mukilteo, WA | MillingTurningWaterjetBendingWeldingFinishing | - |
| Northern States Metals Bending, Welding, Stamping · ISO 9001 | Youngstown, OH | BendingWeldingStamping | ISO 9001 |
| Northwest Machining & Manufacturing Inc Milling, Turning, Welding, EDM · ISO 9001 | Meridian, ID | MillingTurningWeldingEDM | ISO 9001 |
| Northwest Steel Fab, Inc Milling, Punching, Bending, Welding | Deer Park, WA | MillingPunchingBendingWelding | - |
| Aero Tech Manufactuting Inc Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly · ISO 9001 | North Salt Lake, UT | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | ISO 9001 |
| Churchmen's Machine Company Milling, Turning, Laser, Waterjet, Welding, Grinding, Finishing | North East, MD | MillingTurningLaserWaterjetWeldingGrindingFinishing | - |
| Custom Machine & Welding, Inc Turning, Waterjet, Bending, Welding, Grinding, Finishing | North Augusta, SC | TurningWaterjetBendingWeldingGrindingFinishing | - |
| Cutting Edge Machining & Automation-Qtr, LLC Milling, Turning, Swiss, Laser, Welding, EDM, Assembly | North Versailles, PA | MillingTurningSwissLaserWeldingEDMAssembly | - |
| Falcon Sheet Metal, Inc Laser, Punching, Welding, Finishing | North Salt Lake, UT | LaserPunchingWeldingFinishing | - |
| Fencing Fabrication LLC Welding | North Las Vegas, NV | Welding | - |
| Fze Manufacturing Solutions, LLC Milling, Swiss, Welding, Finishing, Assembly | North Fond Du Lac, WI | MillingSwissWeldingFinishingAssembly | - |
| Hydrafab Northwest, Inc Laser, Bending, Welding | Spokane Valley, WA | LaserBendingWelding | - |
| Louis C Morin Co Inc Milling, Turning, Swiss, Welding, Grinding, Finishing, Assembly | North Billerica, MA | MillingTurningSwissWeldingGrindingFinishingAssembly | - |
| Machineworks Manufacturing Milling, Turning, Laser, Bending, Welding, Finishing · ISO 9001, AS9100, ITAR | Northridge, CA | MillingTurningLaserBendingWeldingFinishing | ISO 9001, AS9100, ITAR |
| Morrison Berkshire Inc Welding | North Adams, MA | Welding | - |
| Pricewalker Inc Milling, Bending, Welding, Grinding, Finishing, Assembly | North Chesterfield, VA | MillingBendingWeldingGrindingFinishingAssembly | - |
| Quality Welding & Fabrication, LLC Bending, Welding | Lima, OH | BendingWelding | - |
| SRS Fabrication Inc. Milling, Turning, Bending, Welding, Waterjet | North Las Vegas, NV | MillingTurningBendingWeldingWaterjet | - |
| Stark Industrial, LLC Milling, Turning, Swiss, Welding, EDM, Grinding · ISO 9001 | North Canton, OH | MillingTurningSwissWeldingEDMGrinding | ISO 9001 |
| Strickland Machine Co LLC Milling, Turning, Welding, Stamping, Grinding, Finishing, Assembly | North Chesterfield, VA | MillingTurningWeldingStampingGrindingFinishingAssembly | - |
| Structural Steel & Plate Fab Bending, Welding | North Salt Lake, UT | BendingWelding | - |
| Titan Metal Fabricators, Inc Welding, Finishing | Northbrook, IL | WeldingFinishing | - |
| Machine Craft Northwest Inc Milling, Turning, Welding | Lebanon, OR | MillingTurningWelding | - |
| Pacific Northwest Metal Fabricators Turning, Welding, Waterjet | Seattle, WA | TurningWeldingWaterjet | - |
| Classic Machine & Engineering Milling, Turning, Laser, Welding, Grinding | Ashland, VA | MillingTurningLaserWeldingGrinding | - |
| 425 Manufacturing Milling, Turning, Welding, EDM · ISO 9001 | Rockford, IL | MillingTurningWeldingEDM | ISO 9001 |
| A & S Industrial LLC Turning, Laser, Bending, Welding | Chassell, MI | TurningLaserBendingWelding | - |
| A-1 Steel, Inc. Welding | Sparks, NV | Welding | - |
| Abw Technologies, Inc Milling, Welding · ISO 9001, AS9100 | Arlington, WA | MillingWelding | ISO 9001, AS9100 |
| Agi Corporation Milling, Turning, Welding, EDM, Finishing | Huntsville, AL | MillingTurningWeldingEDMFinishing | - |
| Argo Blower & Mfg Co Inc Bending, Welding | Seattle, WA | BendingWelding | - |
| Baum Machine Inc Milling, Turning, Welding | Appleton, WI | MillingTurningWelding | - |
| Bircher Inc Milling, Turning, Bending, Welding | Morehead City, NC | MillingTurningBendingWelding | - |
| Comet Fabricating & Welding Co Laser, Bending, Welding | Rockford, IL | LaserBendingWelding | - |
| Copen Machine, Inc Milling, Turning, Swiss, Welding, Grinding · ISO 9001 | Kent, OH | MillingTurningSwissWeldingGrinding | ISO 9001 |
| Cox Machine LLC Milling, Turning, Welding, EDM, Grinding, Finishing · ISO 9001, ITAR | Traverse City, MI | MillingTurningWeldingEDMGrindingFinishing | ISO 9001, ITAR |
| Damco, Inc Milling, Turning, Waterjet, Welding | New Bern, NC | MillingTurningWaterjetWelding | - |
| Davis Industries Milling, Turning, Punching, Bending, Welding, Assembly · ISO 9001, AS9100 | Phoenix, AZ | MillingTurningPunchingBendingWeldingAssembly | ISO 9001, AS9100 |
| Davis Tool Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP | Hillsboro, OR | MillingTurningLaserWaterjetPunchingBendingWeldingEDMGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP |
| Designed With Sparks LLC Welding | Usk, WA | Welding | - |
| Donsco, Inc Milling, Welding, Casting | Wrightsville, PA | MillingWeldingCasting | - |
| Eagle Valley Industries, LLC Turning, Waterjet, Bending, Welding | Penn Valley, CA | TurningWaterjetBendingWelding | - |
| El Ironworks LLC Bending, Welding, Finishing · ISO 9001 | Toney, AL | BendingWeldingFinishing | ISO 9001 |