| Machine Dynamics Research Lab |
| Machine Tool Research Center |
| M.A. Ford Mfg. Co., Inc. |
| MAG Americas |
| MAG Cincinnati Automation |
| MAG Giddings & Lewis |
| MAG Maintenance Technologies |
| MAG Powertrain-Port Huron |
| MAG Powertrain-Sterling Heights |
| Mahr Federal Inc. |
| Maintenance Service Corp. |
| Makino Inc. |
| Manufactured Products Group (MPG) |
| Manufacturing Research Center MaRC/PMRC |
| Manufacturing Technology, Inc. |
| Mapal Inc. |
| Marposs Corporation |
| Marvel Manufacturing Company Inc. |
| Mastercam/CNC Software, Inc. |
| Master Chemical Corporation |
| Master WorkHolding, Inc. |
| Mate Precision Tooling |
| Mayfran International |
| Mazak Corporation |
| Mazak Optonics Corporation |
| MEGAFAB (Piranha, Whitney, Bertsch) |
| Melin Tool Company |
| Merrill Engineering & Integration |
| Metalsoft, Inc. |
| Methods Machine Tools, Inc.-CO |
| Methods Machine Tools, Inc.-IL |
| Methods Machine Tools, Inc.-AZ |
| Methods Machine Tools, Inc.-CA |
| Methods Machine Tools, Inc.-MA |
| Methods Machine Tools, Inc.-MI |
| Methods Machine Tools, Inc.-NC |
| Metl-Saw Systems, Inc. |
| Metronics Inc. |
| Michigan Custom Machines, Incorporated |
| Microlution, Inc. |
| Micro-Metric |
| Micro-Poise Measurement Systems, LLC |
| MIDACO Corporation |
| Mikron Corporation Denver |
| Mikron Corporation Monroe |
| Milltronics Manufacturing Company |
| Mil-Tec, Inc. |
| The Minster Machine Co. - Beaufort Operations |
| The Minster Machine Company |
| Mitee-Bite Products Inc. |
| Mitts & Merrill L.P. |
| Miyano Machinery USA, Inc. |
| The Modal Shop, Inc. |
| Modern Industries Inc. |
| Moline Tool |
| Monarch Machine Tool, Inc. |
| Moore Nanotechnology Systems, LLC |
| Moore Tool Company |
| Mori Seiki |
| Mori Seiki DTL |
| Mori Seiki USA, Inc. |
| Mori Seiki USA, Inc. - TX |
| Motoman Inc. |
| Motoman Inc.-Troy |
| Murata Machinery USA, Inc.-Machine Tools Division |
| Muskegon Tool Industries, Inc. |
