- Ahaus Tool & Engineering (tool and die, engineering and design, prototype and precision machining)
- Astro Cutting Tool (precision gun drills to automotive, aerospace and other industries)
- Boston Tool Co. (short run tooling, special machines, prototypes)
- C-I-T (Contract Industrial Tooling) (CNC machining, surface and OD grinding, complete welding facilities for detail weldments)
- Elevator Equipment Co. (complete tool and die shop for special machines)
- H & H Design & Tool (design and manufacture of stamping dies, short run tooling, special machines)
- Nixon Tool Co. (machine dies, especially for food extrusion)
- PTC Alliance (special machines, cutting and welding)
- Reeves Manufacturing, Inc. (stamping dies, short run tooling, jigs fixtures & gages)
- Stolle Tool, Inc. (short run tooling, special machines, CAD/CAM0
