| Advanced Precision Machining, Inc Milling, Welding, EDM, Finishing · AS9100 | Garden City, ID | MillingWeldingEDMFinishing | AS9100 |
| Advanced Thrtical Concepts Inc Milling, Turning, Swiss, Laser, Waterjet, Welding, Grinding, Finishing | Camarillo, CA | MillingTurningSwissLaserWaterjetWeldingGrindingFinishing | - |
| Advantech Industries Inc Milling, Laser, Waterjet, Punching, Bending, Welding, Assembly · ISO 9001, ITAR | Rochester, NY | MillingLaserWaterjetPunchingBendingWeldingAssembly | ISO 9001, ITAR |
| Aero Tech Manufactuting Inc Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly · ISO 9001 | North Salt Lake, UT | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | ISO 9001 |
| Aero-Mach Precision LLC Milling, Turning, Welding, Finishing | Mesa, AZ | MillingTurningWeldingFinishing | - |
| Aerotar Inc Milling, Welding, Grinding · ISO 9001 | Opa Locka, FL | MillingWeldingGrinding | ISO 9001 |
| Agi Corporation Milling, Turning, Welding, EDM, Finishing | Huntsville, AL | MillingTurningWeldingEDMFinishing | - |
| Air-Lake Machine Milling, Turning, Welding | Lakeville, MN | MillingTurningWelding | - |
| Albion Machine and Tool LLC Milling, Turning, Laser, Welding, Grinding, Finishing | Albion, MI | MillingTurningLaserWeldingGrindingFinishing | - |
| Algonquin Industries Inc Milling, Turning, Laser, Bending, Welding, Grinding, Assembly | Bellingham, MA | MillingTurningLaserBendingWeldingGrindingAssembly | - |
| Alkab Machine Milling, Turning, Welding, Assembly | New Kensington, PA | MillingTurningWeldingAssembly | - |
| All American Finishing LLC Milling, Bending, Welding, Stamping | Las Vegas, NV | MillingBendingWeldingStamping | - |
| All-American Engineering & Manufacturing, Inc Milling, Turning, Welding, Stamping, EDM, Grinding, Finishing · ISO 9001 | Saint Paul, MN | MillingTurningWeldingStampingEDMGrindingFinishing | ISO 9001 |
| 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 |
| Alliance Laser Inc Milling, Turning, Laser, Bending, Finishing | Slidell, LA | MillingTurningLaserBendingFinishing | - |
| Allied Machine Works Milling, Turning, Welding | Phoenix, AZ | MillingTurningWelding | - |
| Allied Machining Co., Inc Milling, Turning, Welding, EDM, Grinding, Finishing, Assembly | Newington, CT | MillingTurningWeldingEDMGrindingFinishingAssembly | - |
| 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 | - |
| Alpha Omega Machining Inc Milling, Turning, Welding, EDM, Finishing · ISO 9001 | Painesville, OH | MillingTurningWeldingEDMFinishing | ISO 9001 |
| Alpha Precision Technologies, Inc Milling, Turning, Welding | Humble, TX | MillingTurningWelding | - |
| Alziebler Incorporated Milling, Turning, Welding, Grinding, Finishing · ISO 9001, AS9100, ITAR, NADCAP | Arleta, CA | MillingTurningWeldingGrindingFinishing | ISO 9001, AS9100, ITAR, NADCAP |
| Am Specialties, Inc Milling, Welding, Stamping, EDM, Grinding, Finishing, Assembly · ISO 9001 | Sterling Heights, MI | MillingWeldingStampingEDMGrindingFinishingAssembly | ISO 9001 |
| American Babbitt Bearing Inc Milling, Welding, Casting · ISO 9001 | Huntington, WV | MillingWeldingCasting | ISO 9001 |
| American Bully Manufacturing LLC Milling, Bending, Welding, Finishing, Assembly · AS9100 | Annapolis Junction, MD | MillingBendingWeldingFinishingAssembly | AS9100 |
| 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 Metal Fab Inc Milling, Laser, Punching, Bending, Welding, Stamping · ISO 9001 | Three Rivers, MI | MillingLaserPunchingBendingWeldingStamping | ISO 9001 |
| American Precision Tool & Engineering, Inc Milling, Turning, Swiss, Welding, Grinding, Finishing | Pacoima, CA | MillingTurningSwissWeldingGrindingFinishing | - |
| Amerimac Machining Corp Milling, Turning, Welding | Jackson, MS | MillingTurningWelding | - |
| Amincor Milling, Turning, Swiss, Laser, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing, Assembly · ISO 9001, ITAR, CMMC | Belton, MO | MillingTurningSwissLaserPunchingBendingWeldingStampingEDMGrindingFinishingAssembly | ISO 9001, ITAR, CMMC |
| AMS Accurate Metal Milling, Bending, Laser, Welding, Stamping · AS9100 | Richland Hills, TX | MillingBendingLaserWeldingStamping | AS9100 |
| 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 | - |
| Apex Design Technology of Alabama LLC Milling, Turning, Bending, Welding, Assembly · ISO 9001 | Decatur, AL | MillingTurningBendingWeldingAssembly | ISO 9001 |
| Apex Engineered Products Milling, Turning, Waterjet, Welding, Finishing | Clark, PA | MillingTurningWaterjetWeldingFinishing | - |
| Aphase II Inc Milling, Turning, Bending, Welding, Stamping, EDM, Grinding | Sterling Heights, MI | MillingTurningBendingWeldingStampingEDMGrinding | - |
| Apogee CNC Inc Milling, Welding, Grinding, Finishing · ITAR | Dexter, MI | MillingWeldingGrindingFinishing | ITAR |
| Applied Industrial Machining Milling, Turning, Welding · AS9100 | Oklahoma City, OK | MillingTurningWelding | AS9100 |
| Applied Metals & Machine Works, Inc. Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| APV Manufacturing Milling, Waterjet, Bending, Welding, Grinding · NADCAP | Buena Park, CA | MillingWaterjetBendingWeldingGrinding | NADCAP |
| Ariam Industries LLC Milling, Turning, Welding | Baraga, MI | MillingTurningWelding | - |
| Arkay Solutions Milling, Turning, Welding, Assembly | Feasterville Trevose, PA | MillingTurningWeldingAssembly | - |
| Armorit, LLC Milling, Turning, Welding, EDM, Grinding, Assembly · ISO 9001, ITAR | Sarasota, FL | MillingTurningWeldingEDMGrindingAssembly | ISO 9001, ITAR |
| Ascend Engineering LLC Milling, Turning, Welding, Grinding, Assembly · ISO 9001 | Largo, FL | MillingTurningWeldingGrindingAssembly | ISO 9001 |
| Ascend Mfg Corp Milling, Laser, Welding, Stamping, Finishing | Anaheim, CA | MillingLaserWeldingStampingFinishing | - |
| Asset Solutions Inc Milling, Turning, Bending, Welding, Assembly · ISO 9001 | Hutto, TX | MillingTurningBendingWeldingAssembly | ISO 9001 |
| Ast Manufacturing Milling, Laser, Punching, Bending, Welding, Assembly · ISO 9001 | Grand Prairie, TX | MillingLaserPunchingBendingWeldingAssembly | ISO 9001 |