| Business | Phone |
| Acro Metal Stamping Co 2200 W Cornell St, Milwaukee 53209 | (414) 445-8787 |
| American Postal Mfg 500 W Oklahoma Ave, Milwaukee 53207 | (414) 290-1100 |
| Arrow Tool & Stamping Co 4548 W Mitchell St, Milwaukee 53214 | (414) 383-5710 |
| General Press & Fabricating Co 1500 W Saint Paul Ave, Milwaukee 53233 | (414) 272-6000 |
| Milwaukee Wire Products 9201 W Heather Ave, Milwaukee 53224 | (414) 365-5000 |
| Schaefer Tool & Mfg Co 5844 N 99th St, Milwaukee 53225 | (414) 462-6050 |
| Production Stamping Corp 301 E Vienna Ave, Milwaukee 53212 | (414) 352-0750 |