| | Atomic Engineering Co (Rosemont, IL) | |
| | B & T Tool & Die Co Inc (Cleveland, OH) | |
| | Barrett Tool & Die Inc (Addison, IL) | |
| | Becker Tooling Group LLC (Sterling Hts, MI) | |
| | Bennett Technical Service (Hamilton, OH) | |
| | Bestway Industries Inc (Cleveland, OH) | |
| | Biggs Tool & Die Inc (Warminster, PA) | |
| | Braun, Harry L Co (Crystal Lake, IL) | |
| | Brink's Machine Co Inc (Alma, MI) | |
| | Brothers Industries Inc (Madison Heights, MI) | |
| | Buckingham Tool Corp (Livonia, MI) | |
| | Buiter Tool & Die Inc (Grand Rapids, MI) | |
| | C & C Machine Tool Inc (Lake Orion, MI) | |
| | C & C Tool Manufacturing Co (Villa Park, IL) | |
| | C & P Manufacturing Inc (Warren, MI) | |
