| Advance Manufacturing Tech Milling, Turning, Welding · ISO 9001, AS9100 | Salt Lake City, UT | MillingTurningWelding | ISO 9001, AS9100 |
| Advance Metal Fabrication Mach Turning, Laser, Punching, Bending, Welding, Stamping, Finishing | Prescott, AZ | TurningLaserPunchingBendingWeldingStampingFinishing | - |
| Advanced Fabrication Bending, Welding, Waterjet | Bakersfield, CA | BendingWeldingWaterjet | - |
| Advanced Machine & Tooling Inc Milling, Turning, Laser, Punching, Bending, Welding, Stamping, Grinding | Virginia Beach, VA | MillingTurningLaserPunchingBendingWeldingStampingGrinding | - |
| Advanced Machining & Tooling, LLC Milling, Turning, Welding, Stamping, EDM, Grinding, Finishing · ISO 9001 | Salisbury, NC | MillingTurningWeldingStampingEDMGrindingFinishing | ISO 9001 |
| Advanced Machining Inc Milling, Turning, Waterjet, Welding | New Smyrna Beach, FL | MillingTurningWaterjetWelding | - |
| Advanced Materials Technologies, LLC Milling, Turning, Welding, EDM, Grinding · ISO 9001, AS9100 | Chandler, AZ | MillingTurningWeldingEDMGrinding | ISO 9001, AS9100 |
| Advanced Mechatronics Corp Milling, Turning, Welding, EDM, Grinding | Norton Shores, MI | MillingTurningWeldingEDMGrinding | - |
| Advanced Piping Products Incorporated Welding | Houston, TX | Welding | - |
| Advanced Plating Technologies Welding, Finishing · ISO 9001, ITAR, ISO 13485 | Milwaukee, WI | WeldingFinishing | ISO 9001, ITAR, ISO 13485 |
| Aero-Mach Precision LLC Milling, Turning, Welding, Finishing | Mesa, AZ | MillingTurningWeldingFinishing | - |
| Aeromax Technologies LLC Welding, Assembly · AS9100, ITAR | Savannah, GA | WeldingAssembly | AS9100, ITAR |
| Aerospace Manufacturing Inc Welding, Assembly · AS9100 | Canyon Countrt, CA | WeldingAssembly | AS9100 |
| Aerotar Inc Milling, Welding, Grinding · ISO 9001 | Opa Locka, FL | MillingWeldingGrinding | ISO 9001 |
| Agile Engineering & Manufacturing LLC Milling, Turning, Welding, EDM, Grinding, Finishing | Indianapolis, IN | MillingTurningWeldingEDMGrindingFinishing | - |
| Aircraft Welding Inc Welding · NADCAP | Euclid, OH | Welding | NADCAP |
| Alaskan Copper Works Bending, Welding, Waterjet | Seattle, WA | BendingWeldingWaterjet | - |
| Albion Machine and Tool LLC Milling, Turning, Laser, Welding, Grinding, Finishing | Albion, MI | MillingTurningLaserWeldingGrindingFinishing | - |
| Alcaro & Alcaro Plating Co Inc Welding, Stamping, Finishing · ISO 9001 | Montclair, NJ | WeldingStampingFinishing | ISO 9001 |
| Alexander Industries USA LLC Milling, Turning, Welding, Finishing, Assembly | Grand Rapids, MI | MillingTurningWeldingFinishingAssembly | - |
| Alexander's Machine Laser, Welding | Fort Worth, TX | LaserWelding | - |
| Alinabal Laser, Waterjet, Bending, Welding, Stamping, EDM, Grinding, Assembly | Milford, CT | LaserWaterjetBendingWeldingStampingEDMGrindingAssembly | - |
| All Precision Metals Bending, Welding | El Paso, TX | BendingWelding | - |
| All-Around Fabrication Inc Milling, Laser, Bending, Welding · ITAR | Sacramento, CA | MillingLaserBendingWelding | ITAR |
| All-Ways Metal Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding · ISO 9001, ITAR | Gardena, CA | MillingTurningLaserPunchingBendingWeldingGrinding | ISO 9001, ITAR |
| Allied Mechanical Milling, Turning, Bending, Welding, EDM, Grinding, Assembly | Ontario, CA | MillingTurningBendingWeldingEDMGrindingAssembly | - |
| Allied Metals Co Laser, Welding | Johnson City, TN | LaserWelding | - |
| Allied Precision, Inc Milling, Turning, Swiss, Welding, Grinding · ISO 9001 | Middletown, DE | MillingTurningSwissWeldingGrinding | ISO 9001 |
| Allis-Roller LLC Milling, Turning, Welding, Grinding, Assembly | Franklin, WI | MillingTurningWeldingGrindingAssembly | - |
| Alloy Fabricators Inc Bending, Laser, Welding, Waterjet, Stamping | Lodi, OH | BendingLaserWeldingWaterjetStamping | - |
| Alpine Conglomerate, LLC Milling, Welding · ISO 9001, AS9100, ITAR, NADCAP, CMMC | Bloomer, WI | MillingWelding | ISO 9001, AS9100, ITAR, NADCAP, CMMC |
| Alto Precision, Inc Milling, Turning, Welding, Grinding | Grand Rapids, MI | MillingTurningWeldingGrinding | - |
| Amark Machine Works, LLC Milling, Turning, Welding, Stamping, EDM, Grinding | Gravette, AR | MillingTurningWeldingStampingEDMGrinding | - |
| American Alloy Fabrication Inc Laser, Punching, Bending, Welding, Assembly | Huntsville, AL | LaserPunchingBendingWeldingAssembly | - |
| American Babbitt Bearing Inc Milling, Welding, Casting · ISO 9001 | Huntington, WV | MillingWeldingCasting | ISO 9001 |
| American CNC Fabricating, Inc. Milling, Bending, Laser, Welding, Metal AM | Spokane Valley, WA | MillingBendingLaserWeldingMetal AM | - |
| American Fab Milling, Laser, Bending, Welding | Spring Lake, MI | MillingLaserBendingWelding | - |
| American Machine & Gear Inc Milling, Turning, Welding, EDM | Portland, OR | MillingTurningWeldingEDM | - |
| American Metal Fab Inc Milling, Laser, Punching, Bending, Welding, Stamping · ISO 9001 | Three Rivers, MI | MillingLaserPunchingBendingWeldingStamping | ISO 9001 |
| American Precision Industries, Inc Milling, Turning, Laser, Bending, Welding, Finishing | Hillsboro, OR | MillingTurningLaserBendingWeldingFinishing | - |
| American Technical Fabricators LLC Laser, Punching, Bending, Welding, Assembly | Bad Axe, MI | LaserPunchingBendingWeldingAssembly | - |
| Amherst Stainless Fabrication, LLC Turning, Welding, Waterjet | Buffalo, NY | TurningWeldingWaterjet | - |
| AMS Accurate Metal Milling, Bending, Laser, Welding, Stamping · AS9100 | Richland Hills, TX | MillingBendingLaserWeldingStamping | AS9100 |
| AMS Manufacturing Welding, EDM, Finishing, Assembly | San Jose, CA | WeldingEDMFinishingAssembly | - |
| Amscot Structural Products Corporation Turning, Welding | Dover, NJ | TurningWelding | - |
| Anaheim Precision Milling, Turning, Bending, Laser, Welding, Waterjet · ISO 9001, AS9100, NADCAP | Orange, CA | MillingTurningBendingLaserWeldingWaterjet | ISO 9001, AS9100, NADCAP |
| Anchor Fabricators Inc Laser, Punching, Bending, Welding, Stamping, Assembly | Clayton, OH | LaserPunchingBendingWeldingStampingAssembly | - |
| Anderson Metal Industries Inc Milling, Turning, Welding, EDM, Grinding, Finishing · ISO 9001, ITAR | Franklin, PA | MillingTurningWeldingEDMGrindingFinishing | ISO 9001, ITAR |
| Ankeny Automation, LLC Milling, Laser, Welding, Grinding, Finishing | Omaha, NE | MillingLaserWeldingGrindingFinishing | - |
| Anthony Machine Milling, Turning, Welding | San Antonio, TX | MillingTurningWelding | - |