| Business | Phone |
| Astro Machine Co 3734 W 139th St, Hawthorne 90250 | (310) 679-8291 |
| Bourhis Mold Co 2205 W El Segundo Blvd, Hawthorne 90250 | (323) 755-3585 |
| Glen-Mac Swiss Co 12848 Weber Way, Hawthorne 90250 | (310) 978-4555 |
| Katch Design Co 3953 W 139th St, Hawthorne 90250 | (310) 676-4989 |
| Mars Enter-Tech Industries 13709 Cordary Ave, Hawthorne 90250 | (310) 676-4049 |
| Warmelin Precision Products 12705 Daphne Ave, Hawthorne 90250 | (323) 777-5003 |
| A & J Machine 14015 Crenshaw Blvd, Hawthorne 90250 | (310) 679-0500 |
| Aranda's Industries 3124 W Rosecrans Ave, Hawthorne 90250 | (310) 676-0314 |
| B & C Machine Co Inc 13224 Prairie Ave, Hawthorne 90250 | (323) 678-9962 |
| Big Ring Machine Co 11651 Prairie Ave, Hawthorne 90250 | (310) 679-5039 |
| E & M Precision Machining 3822 W 139th St, Hawthorne 90250 | (310) 644-5605 |
| Fisher Machine & Grinding 11704 Inglewood Ave, Hawthorne 90250 | (310) 644-8375 |
| Grof Engineering 14015 Crenshaw Blvd, Hawthorne 90250 | (310) 679-3719 |
| Thiessen Machine Corp 4847 W Rosecrans Ave # D, Hawthorne 90250 | (310) 675-8294 |
| Hyro Engineering 3120 1/2 W Rosecrans Ave, Hawthorne 90250 | (310) 676-7216 |
| Indarg Engineering 12521 Crenshaw Blvd, Hawthorne 90250 | (310) 679-6022 |
| J & A Automatic 12117 Prairie Ave, Hawthorne 90250 | (310) 331-1603 |
| J & J Machine 14035 Crenshaw Blvd, Hawthorne 90250 | (310) 219-4070 |
| L F Technology 12269 Prairie Ave, Hawthorne 90250 | (310) 516-9344 |
| Linahan Manufacturer Co Of Calif 13127 Yukon Ave, Hawthorne 90250 | (310) 676-2293 |
| Russel Manufacturing & Dev 13709 Cordary Ave # 6, Hawthorne 90250 | (310) 679-1010 |
| Preferred Precision Machining 3953 W 139th St, Hawthorne 90250 | (310) 978-1215 |
| Pro-Tech Machine 14035 Crenshaw Blvd, Hawthorne 90250 | (310) 675-3423 |
| Micro Space Products 3906 W 139th St, Hawthorne 90250 | (310) 675-3309 |
| One Stop Engine Rebuilding 3944 W El Segundo Blvd, Hawthorne 90250 | (310) 644-7363 |