| Business | Phone |
| Aeromoto 1271 Columbia Ave # F8, Riverside 92507 | (951) 276-0903 |
| Annex Industries 6692 Doolittle Ave, Riverside 92503 | (951) 343-1817 |
| Calcortec Inc 12155 Magnolia Ave # 14, Riverside 92503 | (951) 688-8196 |
| California Tool & Engineering 7417 Orangewood Dr, Riverside 92504 | (951) 358-1111 |
| D Mills Grinding & Machining 6131 Quail Valley Ct, Riverside 92507 | (951) 697-6847 |
| De Anza Tool & Manufacturer 4010 Garner Rd, Riverside 92501 | (951) 683-3080 |
| Dga Machine Shop Blanchard 6665 View Park Ct, Riverside 92503 | (951) 354-2113 |
| Ejay Components Inc 6471 Mission Blvd, Riverside 92509 | (951) 683-6313 |
| Ever Pac 1499 Palmyrita Ave, Riverside 92507 | (951) 774-3274 |
| Harper & Harper Bookkeeping 3879 Brockton Ave # B, Riverside 92501 | (951) 686-7254 |
| Jaffa Precision Engineering 12117 Madera Way, Riverside 92503 | (951) 278-8797 |
| Kowalski's Machine Shop 7633 Cypress Ave, Riverside 92503 | (951) 785-4001 |
| Magnolia Center Machine Shop 3682 Sunnyside Dr, Riverside 92506 | (951) 787-9181 |
| Performance Tool & Design 1403 W Linden St, Riverside 92507 | (951) 688-0196 |
| Racso Mold Co 7203 Arlington Ave # D, Riverside 92503 | (951) 354-2613 |
| A & W Screw Machine Products 3131 Kansas Ave, Riverside 92507 | (951) 781-4901 |
| A 1 Cylinder Head 5909 Jurupa Ave # S, Riverside 92504 | (951) 688-1273 |
| A Plus Cnc Engineering 2025 Chicago Ave # A14, Riverside 92507 | (951) 341-0752 |
| Acrotech Machine Inc 9860 Indiana Ave # 24, Riverside 92503 | (951) 688-6206 |
| Acuity Machine Co 8725 54th St, Riverside 92509 | (951) 817-0583 |
| Aeromoto 1506 Columbia Ave # 8, Riverside 92507 | (951) 276-0903 |
| B & L Engineering 9880 Indiana Ave # 5, Riverside 92503 | (951) 354-5721 |
| B K Metals Works 4911 Felspar St # 114, Riverside 92509 | (951) 361-2213 |
| Bamm Engineering 1200 Dodson Way, Riverside 92507 | (951) 779-8020 |
| Buckeye Machine 9800 Indiana Ave, Riverside 92503 | (951) 637-0886 |
| Davka Enterprises 12155 Magnolia Ave, Riverside 92503 | (951) 689-5861 |
| C & E Machine Shop 2509 Main St, Riverside 92501 | (951) 788-6121 |
| Cal Pin Corp 4911 Felspar St # 112, Riverside 92509 | (951) 360-8735 |
| Carmic Engineering 1440 3rd St # 7, Riverside 92507 | (951) 369-7300 |
| Eagle Machine Co 11681 Sterling Ave, Riverside 92503 | (951) 637-1323 |
| Ellis Machine 1810 Massachusetts Ave # E, Riverside 92507 | (951) 788-2478 |
| Eon Technologies 2023 Chigaco Ave #B22, Riverside 92507 | (951) 686-1365 |
| Falk Tool & Engineering Co 18935 Van Buren Blvd, Riverside 92508 | (951) 780-2187 |
| Fitzpatrick Tool Design 1710 Palmyrita Ave # 1, Riverside 92507 | (951) 275-9020 |
| G & G Machine Shop 6611 Arlington Ave # Q, Riverside 92504 | (951) 689-1533 |
| G & S Swiss 9820 Indiana Ave, Riverside 92503 | (951) 509-1640 |
| Jacnc 9880 Indiana Ave # 8, Riverside 92503 | (951) 343-1553 |
| Mance Co 9880 Indiana Ave # 18, Riverside 92503 | (951) 359-8789 |
| Match Fit Grind 455 W La Cadena Dr # 19, Riverside 92501 | (951) 786-0151 |
| Micron Engineering 977 Main St, Riverside 92501 | (951) 686-7254 |
| Mph Precision 9840 Indiana Ave # 7, Riverside 92503 | (951) 637-1194 |
| Ngns Precision 2025 Chicago Ave, Riverside 92507 | (951) 682-8201 |
| Precise Aero Products 4120 Indus Way, Riverside 92503 | (951) 340-4554 |
| Riverside Swiss Svc 9860 Indiana Ave # 26, Riverside 92503 | (951) 785-8085 |
| Rti Industries 9324 Narnia Dr, Riverside 92503 | (951) 785-4339 |
| S & J Precision Tool 12327 Doherty St, Riverside 92503 | (951) 272-3890 |
| Skyspares Parts Inc 6640 View Park Ct, Riverside 92503 | (951) 351-0770 |
| Star Enterprises 6734 Doolittle Ave, Riverside 92503 | (951) 689-8580 |
| T C Quality Machining 12155 Magnolia Ave, Riverside 92503 | (951) 509-4633 |
| V Machine 12510 Magnolia Ave # G, Riverside 92503 | (951) 734-4663 |
| Valdez Machine 9820 Indiana Ave # 6, Riverside 92503 | (951) 354-8873 |
| Wolverine Custom Sleeves & Manufacturer 10000 Indiana Ave # 3, Riverside 92503 | (951) 688-6166 |
| York Engineering 7121 Arlington Ave, Riverside 92503 | (951) 687-7773 |
| Machine Works 2222 Kansas Ave, Riverside 92507 | (951) 787-0107 |
| On-Time Machining 2040 Eastridge Ave # B11, Riverside 92507 | (951) 697-4797 |
| P & A Lyons Industries 9287 Orco Pkwy # G, Riverside 92509 | (951) 685-2514 |
| Rancho Machine Manufacturer Inc 3072 Rubidoux Blvd # J, Riverside 92509 | (951) 683-3800 |
| Riverside Machine Works Inc 6301 Baldwin Ave, Riverside 92509 | (951) 685-7416 |
| Pimco 10555 Magnolia Ave, Riverside 92505 | (951) 343-1976 |
| Quantum Precision Products 425 W La Cadena Dr # 5, Riverside 92501 | (951) 328-9234 |
| Sequist Co 2758 Main St, Riverside 92501 | (951) 684-6100 |
| Westcorp Engineering 1403 W Linden St, Riverside 92507 | (951) 786-9478 |