| Sheetmetal Engineering Inc Milling, Laser, Punching, Bending, Welding · ISO 9001, AS9100 | Simi Valley, CA | MillingLaserPunchingBendingWelding | ISO 9001, AS9100 |
| Specialty Precision Machining Milling, Turning, Laser · ISO 9001 | Stockton, CA | MillingTurningLaser | ISO 9001 |
| A & A Fabrication and Polishing Corporation Milling, Turning, Laser, Punching, Bending, Welding · ISO 9001, AS9100 | Montebello, CA | MillingTurningLaserPunchingBendingWelding | ISO 9001, AS9100 |
| Ap Precision Metals, Inc Laser, Punching, Bending, Welding, Stamping, Finishing, Assembly · ISO 9001 | San Diego, CA | LaserPunchingBendingWeldingStampingFinishingAssembly | ISO 9001 |
| Udash Corporation Milling, Laser, Waterjet, Welding, Stamping, Assembly · ISO 9001, AS9100 | Simi Valley, CA | MillingLaserWaterjetWeldingStampingAssembly | ISO 9001, AS9100 |
| All New Stamping Co Laser, Punching, Bending, Stamping, Grinding · ISO 9001, AS9100 | El Monte, CA | LaserPunchingBendingStampingGrinding | ISO 9001, AS9100 |
| Ricaurte Precision Inc Milling, Turning, Swiss, Laser, EDM, Finishing, Assembly · ISO 9001, ITAR | Santa Ana, CA | MillingTurningSwissLaserEDMFinishingAssembly | ISO 9001, ITAR |
| Group Manufacturing Services Inc Milling, Turning, Laser, Punching, Bending, Welding, Assembly · ISO 9001 | San Jose, CA | MillingTurningLaserPunchingBendingWeldingAssembly | ISO 9001 |
| Hardcraft Industries Inc Laser, Bending, Welding, Assembly · ISO 9001 | San Jose, CA | LaserBendingWeldingAssembly | ISO 9001 |
| Pacific Maritime Industries Corp Milling, Turning, Laser, Waterjet, Punching, Bending, Welding · ISO 9001 | San Diego, CA | MillingTurningLaserWaterjetPunchingBendingWelding | ISO 9001 |
| Perforated Panels Laser, Waterjet, Bending, Welding | Pacoima, CA | LaserWaterjetBendingWelding | - |
| Rah Industries Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Finishing, Assembly · ISO 9001, AS9100, NADCAP | Santa Clarita, CA | MillingTurningLaserWaterjetPunchingBendingWeldingFinishingAssembly | ISO 9001, AS9100, NADCAP |
| California Lasers Inc Milling, Laser, Welding, EDM, Grinding | Simi Valley, CA | MillingLaserWeldingEDMGrinding | - |
| Delta One Manufacturing LLC Milling, Turning, Laser, Welding, Finishing, Assembly | San Jose, CA | MillingTurningLaserWeldingFinishingAssembly | - |
| Eastwood Machine, LLC Milling, Turning, Laser, Waterjet, Welding, EDM, Grinding, Finishing, Assembly | Santee, CA | MillingTurningLaserWaterjetWeldingEDMGrindingFinishingAssembly | - |
| Five Star Enterprises Milling, Laser, Waterjet, Welding, Stamping, Metal AM, EDM, Finishing | San Marcos, CA | MillingLaserWaterjetWeldingStampingMetal AMEDMFinishing | - |
| Haig Precision Manufacturing Corp Milling, Turning, Laser, Punching, Bending, Welding, Stamping, EDM, Grinding, Finishing, Assembly | San Jose, CA | MillingTurningLaserPunchingBendingWeldingStampingEDMGrindingFinishingAssembly | - |
| Harcon Precision Metals, Inc Milling, Turning, Laser, Waterjet, Punching, Bending, Welding, Finishing | San Diego, CA | MillingTurningLaserWaterjetPunchingBendingWeldingFinishing | - |
| L&B Labs Milling, Turning, Laser, Welding, EDM, Grinding | San Jose, CA | MillingTurningLaserWeldingEDMGrinding | - |
| Luna's Sheet Metal Inc Milling, Turning, Bending, Laser, Welding | Santa Clara, CA | MillingTurningBendingLaserWelding | - |
| SJC Precision Inc Milling, Laser, Punching, Welding, Stamping, Grinding · ISO 9001, ITAR | Milpitas, CA | MillingLaserPunchingWeldingStampingGrinding | ISO 9001, ITAR |
| Airtronics Metal Products Milling, Laser, Punching, Bending, Welding, Assembly · ISO 9001, ISO 13485 | Morgan Hill, CA | MillingLaserPunchingBendingWeldingAssembly | ISO 9001, ISO 13485 |
| California Sheet Metal Bending, Laser, Welding, Waterjet | El Cajon, CA | BendingLaserWeldingWaterjet | - |
| Cortec Precision Sheetmetal Milling, Turning, Bending, Laser, Welding | San Jose, CA | MillingTurningBendingLaserWelding | - |
| HNDO Precision Milling, Laser, Finishing | Santa Rosa, CA | MillingLaserFinishing | - |
| Martin's Metal Fabrication & Welding, Inc Milling, Turning, Laser, Waterjet, Bending, Welding | Vacaville, CA | MillingTurningLaserWaterjetBendingWelding | - |
| Snowline Engineering Laser, Waterjet, Welding, Finishing · ISO 9001, AS9100, NADCAP | Cameron Park, CA | LaserWaterjetWeldingFinishing | ISO 9001, AS9100, NADCAP |
| Abc Sheet Metal Laser, Waterjet, Punching, Bending, Welding · ISO 9001, AS9100 | Anaheim, CA | LaserWaterjetPunchingBendingWelding | ISO 9001, AS9100 |
| All-Ways Metal Inc Milling, Turning, Laser, Punching, Bending, Welding, Grinding · ISO 9001, ITAR | Gardena, CA | MillingTurningLaserPunchingBendingWeldingGrinding | ISO 9001, ITAR |
| CalWest MFG Milling, Turning, Laser, Waterjet, Bending, Welding · ISO 9001, ITAR | Fontana, CA | MillingTurningLaserWaterjetBendingWelding | ISO 9001, ITAR |
| Delta Hi-Tech Milling, Turning, Swiss, Laser, Bending, Welding, EDM, Finishing, Assembly · ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 | Chatsworth, CA | MillingTurningSwissLaserBendingWeldingEDMFinishingAssembly | ISO 9001, AS9100, ITAR, NADCAP, ISO 13485 |
| Engineering Design Industries, Inc Milling, Turning, Laser, Welding, Stamping, EDM, Grinding, Finishing | S El Monte, CA | MillingTurningLaserWeldingStampingEDMGrindingFinishing | - |
| Hallmark Metals Inc Milling, Turning, Laser, Punching, Welding, Stamping, Finishing · ISO 9001, ITAR, NADCAP | Glendora, CA | MillingTurningLaserPunchingWeldingStampingFinishing | ISO 9001, ITAR, NADCAP |
| Hasten Applied CNC LLC Milling, Turning, Swiss, Laser, Bending, Welding, Stamping, EDM, Finishing · ISO 9001, ITAR | Riverside, CA | MillingTurningSwissLaserBendingWeldingStampingEDMFinishing | ISO 9001, ITAR |
| Justified Performance LLC Laser, Bending, Welding, Finishing, Assembly · ISO 9001 | Rocklin, CA | LaserBendingWeldingFinishingAssembly | ISO 9001 |
| Laserworx Mfg Laser, Bending, Welding, Stamping · AS9100, ITAR | Oxnard, CA | LaserBendingWeldingStamping | AS9100, ITAR |
| Machineworks Manufacturing Milling, Turning, Laser, Bending, Welding, Finishing · ISO 9001, AS9100, ITAR | Northridge, CA | MillingTurningLaserBendingWeldingFinishing | ISO 9001, AS9100, ITAR |
| Microform Precision LLC Turning, Bending, Laser, Welding, Waterjet | Sacramento, CA | TurningBendingLaserWeldingWaterjet | - |
| Sheet Metal Specialists (SMS Fabrications, Inc.) Bending, Laser, Welding, Waterjet · ISO 9001 | Riverside, CA | BendingLaserWeldingWaterjet | ISO 9001 |
| Tri Fab Associates, Inc Milling, Turning, Laser, Punching, Welding, Stamping, Grinding, Finishing, Assembly · ISO 9001, AS9100, ITAR, CMMC | Fremont, CA | MillingTurningLaserPunchingWeldingStampingGrindingFinishingAssembly | ISO 9001, AS9100, ITAR, CMMC |
| Tri Precision Sheetmetal, Inc. Bending, Laser, Welding · ISO 9001, AS9100 | Anaheim, CA | BendingLaserWelding | ISO 9001, AS9100 |
| Trio Metal Stamping, Inc Milling, Turning, Laser, Bending, Welding, Stamping, EDM, Grinding · ISO 9001, NADCAP | City Of Industry, CA | MillingTurningLaserBendingWeldingStampingEDMGrinding | ISO 9001, NADCAP |
| United Sheetmetal Inc Laser, Punching, Welding, Stamping, Casting, EDM, Finishing · ISO 9001 | Fremont, CA | LaserPunchingWeldingStampingCastingEDMFinishing | ISO 9001 |
| Weistec Engineering, Inc Milling, Turning, Laser, Waterjet, Bending, Welding · ISO 9001, AS9100, ITAR | Anaheim, CA | MillingTurningLaserWaterjetBendingWelding | ISO 9001, AS9100, ITAR |
| Advanced Metal Manufacturing Inc Milling, Laser, Punching, Bending, Welding, Finishing · ISO 9001, AS9100 | Simi Valley, CA | MillingLaserPunchingBendingWeldingFinishing | ISO 9001, AS9100 |
| Anaheim Precision Milling, Turning, Bending, Laser, Welding, Waterjet · ISO 9001, AS9100, NADCAP | Orange, CA | MillingTurningBendingLaserWeldingWaterjet | ISO 9001, AS9100, NADCAP |
| Axxis Corp Milling, Turning, Swiss, Laser · ISO 9001, AS9100, ITAR, ISO 13485 | Perris, CA | MillingTurningSwissLaser | ISO 9001, AS9100, ITAR, ISO 13485 |
| deMel Fabrication Bending, Laser, Welding | Anaheim, CA | BendingLaserWelding | - |
| Exact CNC Industries Inc Milling, Turning, Swiss, Laser · ISO 9001, AS9100, ITAR | Chatsworth, CA | MillingTurningSwissLaser | ISO 9001, AS9100, ITAR |
| Precision Machining & Fab Milling, Turning, Bending, Laser, Welding, Waterjet · ISO 9001, AS9100, ITAR | Anaheim, CA | MillingTurningBendingLaserWeldingWaterjet | ISO 9001, AS9100, ITAR |