| Business | Phone |
| A & B Screw Machine Products 4088 Buffalo Rd, Erie 16510 | (814) 899-1252 |
| American Turned Products Co 1944 Wager Rd, Erie 16509 | (814) 824-7600 |
| Erie Specialty Products Inc 645 W 11th St, Erie 16501 | (814) 453-5611 |
| Perry Screw Machine Co 1043 E 20th St, Erie 16503 | (814) 455-8049 |