| A & A Manufacturing Company, Inc. |
| ABB Inc. - Robotics Division |
| Abbott Workholding Products |
| Accura Technics, LLC |
| AccuStream, Inc. |
| AC Manufacturing Technologies |
| Acme Manufacturing Co. |
| Acro Automation Systems, Inc. |
| Action SuperAbrasive Products |
| Acu-Rite Companies Inc. - CA |
| Acu-Rite Companies Inc. |
| ADAPT Automation, Inc. |
| Adcole Corporation |
| Advanced Assembly Automation |
| Advanced Machine & Engineering |
| Advanced Materials Processing Center |
| Advanced Technology & Testing |
| Agie Charmilles |
| Agie Charmilles - CA |
| Agie Charmilles (Headquarters) |
| Agie Charmilles - MA |
| Agie Charmilles - NC |
| Ahaus Tool and Engineering, Inc. |
| Aim Analytical, LLC |
| Airflow Systems Inc. |
| The Ajax Manufacturing Company |
| Allen Benjamin, Inc. |
| Alliance Manufacturing, Inc. |
| Allied Machine & Engineering Corp. |
| Allied Tool Products, Inc. |
| Almco/KLEENTEC |
| Aloris Tool Technology Co., Inc. |
| AltaMAR Laser and Control |
| Amada America Inc. |
| Amada Cutting Technologies |
| AMD/Paratus |
| American Broach & Machine Company |
| American GFM Corporation |
| AMETEK Precitech Inc. |
| Amplex Superabrasives |
| Anchor Abrasives Company |
| Anderson Cook Incorporated |
| Anilam |
| Arobotech Systems, Inc. |
| Arter Precision Grinders |
| ASI - West |
| ASI Workholding, Inc. |
| Aspect Automation |
| Assembly Technology & Test |
| Assembly & Test Worldwide, Inc. |
| ATI Firth Sterling |
| ATI Landis Threading |
| ATI Stellram |
| Atlas Technologies Inc. |
| ATS Systems |
| Automated Precision, Inc. |
| Automatic Feed Co. |
| Automation & Modular Components, Inc. |
| Automation Tool Company |
| Automation Tooling Systems Inc. (ATS) |
