- Abbott Ball Co Inc
- Acra Ball Mfg Co
- Ballco Manufacturing Inc
- E E Brennan Co
- E E Brennan Co
- Gaurdian Systems
- Global Precision Trade Inc
- Hartford Technologies
- Hoover Precision Products
- Hoover Precision Products Inc
- Hoover Precision Products Inc
- Hyatt Ball Co LTD
- New England Miniature Ball Co
- Precision Ball & Gauge
- Precision Components Inc
- Royal Steel Ball Products Inc
- Salem Specialty Ball Co
- Sanbar Balls & Seats Inc
- Sterling Steel Ball
- Texas Specialty Ball Co
- Texas Specialty Ball Co
- TRD Specialties Inc
