| Business | Phone |
| A Plus Machine Products Inc 5285 N 124th St, Milwaukee 53225 | (262) 781-8550 |
| Kay-Bee Machine Products Inc 2768 S 34th St, Milwaukee 53215 | (414) 384-2287 |
| Master Machine Co 8900 W Schlinger Ave, Milwaukee 53214 | (414) 774-6171 |
| Medrow Screw Products Co 5411 W Mobile St, Milwaukee 53219 | (414) 543-8140 |
| Perfect Screw-Products-Corp 6751 W National Ave, Milwaukee 53214 | (414) 771-1120 |