| Business | Phone |
| Fastenal Co 1008 Russell St, Baltimore 21230 | (410) 488-4166 |
| Lawson Products Inc 5403 Knell Ave, Baltimore 21206 | (410) 337-5648 |
| Atlantic Fasteners Inc 9600 Pulaski Park Dr # 109, Baltimore 21220 | (410) 687-4100 |
| Steel & Wire Products Co Inc 1501 W Patapsco Ave, Baltimore 21230 | (410) 355-2800 |
| Trippe Supply Co Inc 102 E Lafayette Ave, Baltimore 21202 | (410) 837-4910 |