| Business | Phone |
| Skico Mfg Co 3 Industrial Cir, Hamden 6517 | (203) 230-1305 |
| Cherek Machine & Tool Co 835 Sherman Ave, Hamden 6514 | (203) 281-0044 |
| Civitello Welding & Machining 55 Manila Ave, Hamden 6514 | (203) 248-1796 |
| Secondary Operations Inc 46 Manila Ave, Hamden 6514 | (203) 288-8241 |
| Raymon Tool 79 Rossotto Dr, Hamden 6514 | (203) 248-2199 |
| Norse Machine Rebuilders 15 Corporate Ridge Rd # 8, Hamden 6514 | (203) 287-0190 |
| Herrick & Cowell Co 839 Sherman Ave, Hamden 6514 | (203) 288-2578 |
| Manda Manufacturing Co 15 Corporate Ridge Rd # 2, Hamden 6514 | (203) 230-1919 |
| Kovil Manufacturing 925 Sherman Ave, Hamden 6514 | (203) 230-8464 |