- A & K Machining
- Crown Boring Co
- Custom Fab Manufacturing LLC
- Dimer ISG
- Elco Inc
- Exact Manufacturing Inc
- Fine Quality Machining & Rpr
- Harts Tool Inc
- Husky LLC
- J & E Mfg Co
- Jca-Dal Machining Inc
- K & K Precision Tool & Die
- K R Strom Machining
- Lowe Industries
- Martin Tool & Machine Inc
- Paslin Co Plant #6
- Production Tapping & Drilling
- Proto-Tek Mfg
- Tucson Industries
- V K Boring Co
- Your Way Machine Tool
- Zel Tool
