| Business | Phone |
| Loughlin Manufacturing 1580 Railroad Ave, Holbrook 11741 | (631) 585-4422 |
| Cjn Machinery Corp 917 Lincoln Ave # 13, Holbrook 11741 | (631) 244-8030 |
| Smithtown Metal Products Corp 1340 Lincoln Ave # 2, Holbrook 11741 | (631) 467-0567 |
| Tens Machine Co 800 Grundy Ave, Holbrook 11741 | (631) 981-3321 |
| Tfe Precision Parts 921 Lincoln Ave # 9, Holbrook 11741 | (631) 563-0843 |
| Tojopa Tool & Instrument 1553 Lincoln Ave, Holbrook 11741 | (631) 981-3747 |
| Unique Machine & Manufacturer Inc 1121 Lincoln Ave # E, Holbrook 11741 | (631) 563-4620 |