| 360 Machine Shop Milling, Turning, Laser, Welding, Metal AM | Bloomington, IL | MillingTurningLaserWeldingMetal AM | - |
| 425 Manufacturing Milling, Turning, Welding, EDM · ISO 9001 | Rockford, IL | MillingTurningWeldingEDM | ISO 9001 |
| 7D Manufacturing Milling, Turning, Bending, Welding | Dallas, TX | MillingTurningBendingWelding | - |
| A & D Precision Manufacturing Milling, Turning, Bending, Welding · ISO 9001, AS9100, ITAR | Anaheim, CA | MillingTurningBendingWelding | ISO 9001, AS9100, ITAR |
| A & P Fabricating Solutions, LLC Milling, Turning, Bending, Laser, Welding | Appleton, WI | MillingTurningBendingLaserWelding | - |
| Absolute Precision Machining, Inc. Turning, Welding · ISO 9001, AS9100 | Anaheim, CA | TurningWelding | ISO 9001, AS9100 |
| AC Manufacturing Milling, Turning, Welding | San Jose, CA | MillingTurningWelding | - |
| Accelerated Tooling LLC Milling, Turning · ISO 9001 | Grand Rapids, MI | MillingTurning | ISO 9001 |
| Accu-Tool, LLC Milling, Turning, EDM · ISO 9001, AS9100 | Apex, NC | MillingTurningEDM | ISO 9001, AS9100 |
| ACE Machine & Metal Fab Co Milling, Turning, Bending, Welding · ISO 9001 | Nashville, TN | MillingTurningBendingWelding | ISO 9001 |
| Ace Manufacturing Inc Milling, Turning · ISO 9001 | Green Bay, WI | MillingTurning | ISO 9001 |
| Acro Manufacturing Corporation Milling, Turning, Welding · ISO 9001 | Cedar Rapids, IA | MillingTurningWelding | ISO 9001 |
| ACS Steel Company Milling, Turning, Bending, Welding | Tulsa, OK | MillingTurningBendingWelding | - |
| Advance Machine Technologies, Inc. Milling, Turning, Bending, Welding, Waterjet · ISO 9001 | Johnston, IA | MillingTurningBendingWeldingWaterjet | ISO 9001 |
| Advance Manufacturing Tech Milling, Turning, Welding · ISO 9001, AS9100 | Salt Lake City, UT | MillingTurningWelding | ISO 9001, AS9100 |
| Aegis Sales & Engineering Inc. Milling, Turning, Bending, Stamping · ISO 9001 | Fort Wayne, IN | MillingTurningBendingStamping | ISO 9001 |
| Aero-Space Tooling & Machining Milling, Turning, EDM · ISO 9001, AS9100 | Salt Lake City, UT | MillingTurningEDM | ISO 9001, AS9100 |
| Aeromethod Precision Milling, Turning, EDM · ITAR | Las Vegas, NV | MillingTurningEDM | ITAR |
| AGF Custom Metal Concepts Turning, Bending, Laser, Welding | Dallas, TX | TurningBendingLaserWelding | - |
| Alex Machining Corp Milling, Turning | San Diego, CA | MillingTurning | - |
| Allen Tool Phoenix Inc Milling, Turning · ISO 9001, AS9100 | East Syracuse, NY | MillingTurning | ISO 9001, AS9100 |
| Allied Machine Works Milling, Turning, Welding | Phoenix, AZ | MillingTurningWelding | - |
| Allied Specialty Precision Inc Milling, Turning, Welding, EDM · ISO 9001, AS9100, NADCAP | Mishawaka, IN | MillingTurningWeldingEDM | ISO 9001, AS9100, NADCAP |
| Alpha Machining & Manufacturing Milling, Turning · AS9100 | Tulsa, OK | MillingTurning | AS9100 |
| American CNC Inc Milling, Turning · AS9100 | Pacoima, CA | MillingTurning | AS9100 |
| American Machine & Gear Inc Milling, Turning, Welding, EDM | Portland, OR | MillingTurningWeldingEDM | - |
| American Machine Tools Co. Milling, Turning, Bending | Chicago, IL | MillingTurningBending | - |
| Amg Engineering & Machining Milling, Turning, Bending, Welding, EDM · ISO 9001, AS9100, ITAR, IATF 16949 | Indianapolis, IN | MillingTurningBendingWeldingEDM | ISO 9001, AS9100, ITAR, IATF 16949 |
| Amherst Stainless Fabrication, LLC Turning, Welding, Waterjet | Buffalo, NY | TurningWeldingWaterjet | - |
| Anaheim Precision Milling, Turning, Bending, Laser, Welding, Waterjet · ISO 9001, AS9100, NADCAP | Orange, CA | MillingTurningBendingLaserWeldingWaterjet | ISO 9001, AS9100, NADCAP |
| Anthony Machine Milling, Turning, Welding | San Antonio, TX | MillingTurningWelding | - |
| Applied Industrial Machining Milling, Turning, Welding · AS9100 | Oklahoma City, OK | MillingTurningWelding | AS9100 |
| Applied Metals & Machine Works, Inc. Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| Arcturus Aerospace Milling, Turning · AS9100, ITAR, NADCAP, ISO 9001 | Little Rock, AR | MillingTurning | AS9100, ITAR, NADCAP, ISO 9001 |
| Arizona CNC Equipment Milling, Turning, Bending, EDM | Tempe, AZ | MillingTurningBendingEDM | - |
| Astley Precision Machine Co Milling, Turning · ISO 9001, ITAR | Irwin, PA | MillingTurning | ISO 9001, ITAR |
| Atlas Machine & Supply, Inc. Milling, Turning, Welding, EDM · ISO 9001 | Louisville, KY | MillingTurningWeldingEDM | ISO 9001 |
| Atlas Machine Co. Inc Milling, Turning, Welding · ISO 9001, AS9100 | Baltimore, MD | MillingTurningWelding | ISO 9001, AS9100 |
| Aurora Machine Milling, Turning, Bending, Welding | Rochester, NY | MillingTurningBendingWelding | - |
| Austin Dynamics, Inc. Milling, Turning · ISO 9001, AS9100, ITAR | Cedar Park, TX | MillingTurning | ISO 9001, AS9100, ITAR |
| Axis Fabrication & Machine Co Milling, Turning, Bending, Laser, Welding, EDM · ISO 9001 | Rockford, TN | MillingTurningBendingLaserWeldingEDM | ISO 9001 |
| B & B Machine EST. 1948 Milling, Turning, Welding · ISO 9001, ITAR | Denver, CO | MillingTurningWelding | ISO 9001, ITAR |
| Baldwin Metals Inc Milling, Turning, Bending, Laser, Welding | Dallas, TX | MillingTurningBendingLaserWelding | - |
| Baron Machine Co., Inc. Milling, Turning, Welding · ISO 9001, AS9100, ITAR | Laconia, NH | MillingTurningWelding | ISO 9001, AS9100, ITAR |
| Baum Machine Inc Milling, Turning, Welding | Appleton, WI | MillingTurningWelding | - |
| Bauman Machine Inc Milling, Turning, Laser, Welding · ISO 9001 | Oklahoma City, OK | MillingTurningLaserWelding | ISO 9001 |
| Benson Machine Works Inc. Turning, Bending, Laser, Welding | Omaha, NE | TurningBendingLaserWelding | - |
| Benton Machine Works Inc. Milling, Turning | Jacksonville, FL | MillingTurning | - |
| Blackburn's Fabrication Milling, Turning, Bending, Laser, Welding | Columbus, OH | MillingTurningBendingLaserWelding | - |
| Blackhawk Machine Products Inc Milling, Turning | Smithfield, RI | MillingTurning | - |