| Business | Phone |
| Charleston Bolt & Nut Co 4676 Franchise St, North Charleston 29418 | (843) 552-2556 |
| Metric Bolt & Nut Co Inc 3359 Meeting Street Rd, North Charleston 29405 | (843) 566-0060 |
| Warren Fastenings South Inc 2330 Air Park Rd, North Charleston 29406 | (843) 554-1322 |