| Business | Phone |
| Castle Precision Industries 15148 Bledsoe St, Sylmar 91342 | (818) 362-5665 |
| Fierrito's Inc 12358 San Fernando Rd, Sylmar 91342 | (818) 362-6136 |
| Fontal Controls Inc 12725 Encinitas Ave, Sylmar 91342 | (818) 833-1127 |
| Herc America Manufacturer 13000 San Fernando Rd # 14, Sylmar 91342 | (818) 833-5789 |
| J R Machine Co 12337 Foothill Blvd, Sylmar 91342 | (818) 834-9155 |
| A-F Machining 13217 San Fernando Rd, Sylmar 91342 | (818) 367-4805 |
| Cowan Precision Grinding Inc 12941 Arroyo St, Sylmar 91342 | (818) 838-3988 |
| F & L Machine 13032 San Fernando Rd, Sylmar 91342 | (818) 367-6992 |
| Friedrich Tool & Manufacturer 13761 Eldridge Ave, Sylmar 91342 | (818) 367-4191 |
| Valle Production & Deburring 12707 Foothill Blvd, Sylmar 91342 | (818) 837-1307 |