| All-Around Fabrication Inc Milling, Laser, Bending, Welding · ITAR | Sacramento, CA | MillingLaserBendingWelding | ITAR |
| Justified Performance LLC Laser, Bending, Welding, Finishing, Assembly · ISO 9001 | Rocklin, CA | LaserBendingWeldingFinishingAssembly | ISO 9001 |
| Accurate Metal Products Milling, Punching, Bending, Welding | Jurupa Valley, CA | MillingPunchingBendingWelding | - |
| Advance Virtu CNC Milling, Turning | Glendale, CA | MillingTurning | - |
| Advanced Engineering & EDM, Inc Milling, Turning, Laser, Stamping, EDM, Grinding | Poway, CA | MillingTurningLaserStampingEDMGrinding | - |
| Advanced Fabrication Bending, Welding, Waterjet | Bakersfield, CA | BendingWeldingWaterjet | - |
| Amex Plating Inc Finishing | Santa Clara, CA | Finishing | - |
| Apex HT Manufacturing Corp Milling, Turning, Finishing · ISO 9001, ITAR, CMMC | Santa Clara, CA | MillingTurningFinishing | ISO 9001, ITAR, CMMC |
| Axis Product Development, Inc Milling · ITAR | Santa Ana, CA | Milling | ITAR |
| CB Manufacturing & Engineering Inc Milling, Turning, EDM · ISO 9001, AS9100 | Santa Ana, CA | MillingTurningEDM | ISO 9001, AS9100 |
| Colleen & Herb Enterprises Inc Milling, Turning, Welding | Fremont, CA | MillingTurningWelding | - |
| Euro Precision, Inc Milling, Turning · ISO 9001, ITAR | Anaheim, CA | MillingTurning | ISO 9001, ITAR |
| Fabriquick LLC Milling, Bending | Benicia, CA | MillingBending | - |
| Heighten America, Inc Milling, Turning, Welding, Assembly · ISO 9001 | Oakdale, CA | MillingTurningWeldingAssembly | ISO 9001 |
| Infinity Precision Inc Milling, Turning, Waterjet, Bending, Grinding · ISO 9001, AS9100 | Simi Valley, CA | MillingTurningWaterjetBendingGrinding | ISO 9001, AS9100 |
| Modern Custom Fabrication Welding | Fresno, CA | Welding | - |
| Odyssey Machining Milling, Finishing · ISO 9001, ITAR | San Jose, CA | MillingFinishing | ISO 9001, ITAR |
| Parallax Manufacturing LLC Milling, Turning, Bending, Welding, Stamping, Assembly · NADCAP | Lake Elsinore, CA | MillingTurningBendingWeldingStampingAssembly | NADCAP |
| Perforated Panels Laser, Waterjet, Bending, Welding | Pacoima, CA | LaserWaterjetBendingWelding | - |
| Qualified Machine Shop Milling, Turning | San Diego, CA | MillingTurning | - |
| R&D Machine LLC Milling, Assembly | Murrieta, CA | MillingAssembly | - |
| Suntiger Industries LLC Welding · ISO 9001, AS9100, ITAR | Oceanside, CA | Welding | ISO 9001, AS9100, ITAR |
| Tri Models Inc Milling, Turning, EDM, Finishing, Assembly | Huntington Beach, CA | MillingTurningEDMFinishingAssembly | - |