| Business | Phone |
| Advanced Machine 4253 Highway 49 W, Springfield 37172 | (615) 384-1311 |
| Tommy's Auto Machine & Parts 1719 Batts Blvd, Springfield 37172 | (615) 384-5164 |
| S & S Precision Inc 711 Bill Jones Industrial Dr, Springfield 37172 | (615) 384-6286 |
| Precision Products-Tn Inc 724 Central Ave W, Springfield 37172 | (615) 384-2501 |
| Quadjay Machine Co 208 Charles Ralph Dr, Springfield 37172 | (615) 384-0828 |
| Modern Tooling Concepts Inc 214 Charles Ralph Dr, Springfield 37172 | (615) 384-9435 |
| Martin Machine 104 Elder Dr, Springfield 37172 | (615) 384-6791 |