12197 verified suppliers listed
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CNC Machining Shops

Best Aerospace CNC Shops in California

California is home to one of the largest aerospace manufacturing ecosystems in the world, with suppliers supporting Boeing, Lockheed Martin, SpaceX, and hundreds of Tier 2 and Tier 3 OEMs. These CNC machining shops carry AS9100 certification, signaling a documented quality management system purpose-built for aerospace traceability and defect prevention. Use this list to shortlist suppliers for precision airframe, engine, and structural components.

Why these suppliers?

  • ✓Every shop on this list holds AS9100 certification — the aerospace quality management standard required by most prime contractors and Tier 1 suppliers.
  • ✓California's concentration of aerospace primes means these shops have proven experience with aerospace-grade alloys such as titanium, Inconel, and 7075 aluminum.
  • ✓We verify each listing's certification status, capabilities, and contact information so you can shortlist confidently without lengthy qualification research.

214 verified suppliers found

3-D Engineering Corporation
Temecula, California

9100 (9001:2015) certified. Certification body: NSF International Strategic Registrations, Ltd.. Structure: Single Site.

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3D Manufacturing, Inc.
Chatsworth, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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5H Sheet Metal Fabrication, Inc.
Orange, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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A & H Wire EDM, Inc.
San Dimas, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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A Better Affect, Inc. DBA: ABACORP CNC Machined Parts
Moorpark, California

9100 (9001:2015) certified. Certification body: International Standards Authority. Structure: Single Site.

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A Precision Machining Corporation
Cameron Park, California

We are a supplier of high quality precision machined components, engineering services and assemblies for all types of industries.

+1 530-677-3700Website
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A&J Technique Precision, Inc.
Chatsworth, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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AA Engineering & Mfg. Dba D&R Machine Co., Inc.
Anaheim, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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AAA Air Support Inc.
Gardena, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

(361) 736-9695Website
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AAA Plating & Inspection, Inc.
Compton, California

9100 (9001:2015) certified. Certification body: Performance Review Institute Registrar. Structure: Single Site.

(522) 090-6695Website
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Able Wire EDM, Inc.
Brea, California

9100 (9001:2015) certified. Certification body: ABS Quality Evaluations, Inc.. Structure: Single Site.

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ABX Engineering, Inc.
Burlingame, California

9100 (9001:2015) certified. Certification body: LRQA, Ltd. Structure: Single Site.

(650) 552-2300Website
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ACC PRECISION, INC.
Oxnard, California

9100 (9001:2015) certified. Certification body: International Standards Authority. Structure: Multi-Site.

(254) 535-2419Website
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Accurate Circuit Engineering
Santa Ana, California

9100 (9001:2015) certified. Certification body: International Standards Authority. Structure: Single Site.

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Accurate Grinding & Mfg. Corporation
Corona, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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Accurate Technology Mfg. Inc.
Sunnyvale, California

9100 (9001:2015) certified. Certification body: International Standards Authority. Structure: Single Site.

800.784.3911Website
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Ace Clearwater Enterprises
Paramount, California

9100 (9001:2015) certified. Certification body: Intertek Testing Services NA, Inc. dba Intertek and Intertek SAI Global. Structure: Campus.

(310) 538-5380Website
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Acro-Spec Grinding Co., Inc.
Riverside, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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Adept Fasteners, Inc.
Valencia, California

9120 (9001:2015) certified. Certification body: DQS Inc.. Structure: Multi-Site.

661.257.6600Website
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Advanced Bellows, Inc
Camarillo, California

9100 (9001:2015) certified. Certification body: International Standards Authority. Structure: Single Site.

(805) 744-3501Website
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Frequently Asked Questions

What certifications should an aerospace CNC shop in California have?
For aerospace work, AS9100 is the baseline quality management certification. Many California aerospace shops also hold ITAR registration for defense work, Nadcap accreditation for special processes (heat treat, coatings, NDT), and ISO 9001 as an underpinning system. Always confirm the certification scope covers the specific processes and materials you need.
How do I verify an aerospace CNC shop's AS9100 certification?
Ask the supplier for a copy of their AS9100 certificate, which should show the issuing registrar (such as BSI, DNV, or Bureau Veritas), the certificate number, and the scope of registration. You can cross-check active certificates in the OASIS database maintained by IAQG (International Aerospace Quality Group) at iaqg.org/oasis.
What is the difference between AS9100 and ISO 9001 for CNC shops?
ISO 9001 is a general quality management standard applicable to any industry. AS9100 includes all ISO 9001 requirements plus additional requirements specific to aerospace: configuration management, first-article inspection (FAI), counterfeit parts prevention, key characteristics, and risk management. Most aerospace prime contractors require their CNC machine shops to hold AS9100, not just ISO 9001.

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