406 shops on record in California carry a verified ISO 9001 claim — each one links to the sentence on the shop’s own site or certificate that says so.
Concentrated in Los Angeles (197), San Jose (47), San Diego (43), Riverside (38), Oxnard (20).
The shops
| Shop | City | Verified capabilities |
|---|
| Dynamic Fabrication Inc | Brea | 23 |
| Pinnacle Precision Sheet Metal Corp | Anaheim | 22 |
| Aranda Tooling Inc | Chino | 22 |
| Loutech LLC | Chino | 22 |
| Nelgo Manufacturing Co | Oceanside | 22 |
| Mass Precision, Inc. | San Jose | 22 |
| True Precision Machining LLC | Goleta | 21 |
| Machineworks Manufacturing | Northridge | 21 |
| Rapid Axis LLC | Redwood City | 21 |
| Top Machining, Inc | Santa Clara | 21 |
| Trio Metal Stamping, Inc | City Of Industry | 21 |
| Force Fabrication Inc. | Oxnard | 20 |
| Bellows Manufacturing & Research, Inc. | San Fernando | 20 |
| True Precision Machining, Inc. | Buellton | 20 |
| Mmg Corp | Ontario | 20 |
| Ricaurte Precision, Inc. | Santa Ana | 20 |
| American Precision Tool & Engineering, Inc. | Pacoima | 19 |
| Argo Spring Manufacturing Co., Inc. | Norwalk | 19 |
| South Alliance Industrial Machine Inc | South El Monte | 19 |
| Verdugo Tool & Engineering Co., Inc. | Chatsworth | 19 |
| Tj Aerospace, Inc. | Garden Grove | 18 |
| R J Enterprises | Gardena | 18 |
| Alloy Metal Products | Livermore | 18 |
| Darmark | Poway | 18 |
| Mars Engineering | San Leandro | 18 |
| Jaffa Precision Engineering, Inc. | Riverside | 18 |
| Metalcrafters Transparencies & Composites Inc | Fountain Valley | 18 |
| I.M.T. Precision, Inc. | Hayward | 18 |
| Next Intent, Inc. | San Luis Obispo | 18 |
| Max Precision Machine, Inc | San Jose | 18 |
| C F W Precision Metal Components | Grover Beach | 17 |
| Tamshell Corporation | Corona | 17 |
| Rache Corp | Camarillo | 17 |
| King Tek EDM & Precision Machining | Anaheim | 17 |
| K & S Welding Fab | Santa Ana | 17 |
| Jaco Engineering | Anaheim | 16 |
| High Speed CNC | Santa Clara | 16 |
| Pacific Metal Stampings Inc | Valencia | 16 |
| C & W Manufacturing | Turlock | 16 |
| Ramda Metal Specialities | Gardena | 16 |
| National Metal Stampings - Temecula Valley | Lancaster | 16 |
| Bend-tek, Inc. | Santa Ana | 16 |
| Jah Machine Inc. | Brea | 16 |
| Laserworx MFG | Oxnard | 16 |
| Able Wire EDM, Inc. | Brea | 16 |
| S & H Machine, Inc. | Burbank | 15 |
| Millipart, Inc | Glendora | 15 |
| Silicon Valley Precision, Inc. | Livermore | 15 |
| Petersen Precision | Redwood City | 15 |
| Coast Precision Enterprises, Inc | San Diego | 15 |
| San Diego Precision Machining, Inc. | San Diego | 15 |
| Lnp Machining | San Jose | 15 |
| G F Enterprises Inc | Santa Ana | 15 |
| Serrano Industries, Inc. | Santa Fe Springs | 15 |
| Smi Ca, Inc. | Santa Fe Springs | 15 |
| Infinity Precision Inc | Simi Valley | 15 |
| Vetpowered, LLC | San Diego | 15 |
| Sonfarrel Aerospace, LLC | Anaheim | 15 |
| Jarvis Manufacturing, Inc | San Jose | 15 |
| Hoosier, Inc. | Corona | 15 |
All ISO 9001 machine shops in California →
Counted from the shops on record at the last build. Every capability, certification and machine below comes from the shop’s own published information or a public federal record, and each one links to the page that carries its source sentence. Figures recomputed 2026-09-22.
