| Business | Phone |
| Arrow Specialties Inc 1695 S Hanley Rd, St Louis 63144 | (314) 645-3665 |
| Automatic Components Co 6229 Bartmer Ave, St Louis 63130 | (314) 727-7505 |
| Quality Screw Machine Products 4017 N Broadway, St Louis 63147 | (314) 621-7758 |
| S & I Industries Inc 6215 Bartmer Ave, St Louis 63130 | (314) 725-6600 |
| Ressel Machine 6229 Bartmer Ave, St Louis 63130 | (314) 862-4030 |
| Mound City Screw Products Co 525 Bates St, St Louis 63111 | (314) 481-9243 |
| Dow Screw Products Inc 3810 Paule Ave, St Louis 63125 | (314) 638-5100 |