- Ace Machining Of Rockford
- Action Machine
- American Quality Machining Inc
- Attra Machine & Tool
- BLT Machines
- Chandler Tool & Design Inc
- Circle Boring & Machine Co
- Custom Keyways & Machining Inc
- Dial Machine Inc
- Eaton Tool & Machine Inc
- Eaton Tool & Machine Inc
- Kadon Screw Machine Products
- L Td Standard Machine Co
- L Td Standard Machine Co
- LTL Co
- M & W Grinding Of Rockford Inc
- Martin Precision
- Mission Tool & Die
- PAR Manufacturing Inc
- Patkus Machine Co
- Pgi Deephole Drilling
- Precise Extrusion Die
- Precision Masters
- R J Link Intl Inc
- Rockford Broach
- Rockford Jobbing Svc
- Rockford Precision Machine Inc
- Smith Boring
- Submission Custom Machine
- Submission Custom Machine
- T Y Precision Automatics Inc
- Thomason Machine Inc
- Thomason Machine Works
- True Cut Wire Edm
- WWL Mfg Inc
