General Machinery & Manufacturing Co
General Machinery & Manufacturing Company (GMMCO) manufactures precision CNC lathe turned parts for the energy, aerospace, and transportation markets. A family machine shop located in Chicago, IL, GMMCO has been in business for over 100 years. We have evolved from a basic metal stamping shop to a CNC precision machining operation that manufactures intricate components for dozens of different…From the company website, read October 13, 2026: gmmco.com
| Location | Chicago, Illinois |
| Website | gmmco.com |
| Processes | CNC millingCNC turningPress brake bendingStamping |
| Certifications | ISO 9001, AS9100 |
| Defense work | Not stated |
| Materials | Not stated on the company website |
| Equipment | cmm, cnc latheMachine makers and classes named on the company website; not a full list. |
| Founded | Not stated |
| Size | Not stated |
| Lead time | Stated by the shop once the listing is claimed |
| Listing | Indexed from public sources, updated October 13, 2026 (how) |
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