| Business | Phone |
| A C Tool Machine Co W185n11424 Whitney Dr, Germantown 53022 | (262) 255-1552 |
| Advanced Machining Tech Inc N114w18775 Clinton Dr, Germantown 53022 | (262) 532-0330 |
| Bohr Precision Machining W194n11160 Klienmann Dr, Germantown 53022 | (262) 251-0761 |
| Superior Metal Products Corp N115w19300 Edison Dr, Germantown 53022 | (262) 250-9660 |
| Germantown Machine Works W165n11904 Fond Du Lac Ave, Germantown 53022 | (262) 251-3246 |
| R S Tool & Machine Inc W194n11180 Klienmann Dr, Germantown 53022 | (262) 255-2520 |
| Koenig Industries Inc W188n11820 Maple Rd, Germantown 53022 | (262) 250-1650 |
| Krenn's Machine N115w19301 Edison Dr, Germantown 53022 | (262) 255-4590 |
| Precise Jig Grinding Inc N115w19145 Edison Dr, Germantown 53022 | (262) 251-9055 |
| Precision Innovations Inc N114w19225 Clinton Dr, Germantown 53022 | (262) 255-6116 |
| M & R Machining Inc N115w18835 Edison Dr, Germantown 53022 | (262) 255-9685 |
| Mahuta Tool Corp N118w19137 Bunsen Dr, Germantown 53022 | (262) 502-4100 |
| Mechanical Products Corp W179n12536 Fond Du Lac Ave, Germantown 53022 | (262) 677-1857 |