| Business | Phone |
| Ackermann Screw Products 1635 W 135th St, Gardena 90249 | (310) 756-0411 |
| Arrow Screw Products 1701 W 135th St, Gardena 90249 | (310) 329-4277 |
| K-Jack Screw Machine Products 1448 W 135th St, Gardena 90249 | (310) 523-9402 |
| Matteson Screw Products 13313 S Normandie Ave, Gardena 90249 | (310) 515-7252 |
| Vayco 13625 S Normandie Ave, Gardena 90249 | (310) 719-1755 |