Precision CNC Machining
for Demanding Industries.
Southern California's AS9100D-certified contract machining shop. Complex geometries, tight tolerances, and full material traceability for aerospace, defense, and medical OEMs.
Custom QuoteParts We Machine
Machining Capabilities
Multi-Axis CNC Milling
3, 4, and 5-axis CNC milling for complex contoured surfaces, undercuts, and compound angle features. Fully in-house with no outsourcing of critical operations.
CNC Turning & Lathe
Precision turning for cylindrical and symmetric components. Tight diameter tolerances and surface finish requirements met consistently across production runs.
Aerospace Structural Parts
Flight-critical aluminum and titanium structural components machined to AS9100D requirements with first-article inspection (FAI) and full AS9102 documentation packages.
Medical Device Machining
Orthopedic implants, surgical instrument housings, and device components machined from biocompatible alloys (Ti-6Al-4V, 316L SS, PEEK) to medical OEM tolerances.
Tight Tolerance Machining
Holding tolerances down to ±0.0005" on critical features. Equipped with CMM inspection and in-process gauging to verify compliance at every stage.
Full Material Traceability
Complete material certifications, heat/lot traceability, and documented process records maintained for every part — required by aerospace and defense supply chains.
Materials We Machine
From lightweight aerospace aluminum to hard titanium alloys and biocompatible materials for medical devices — our equipment and processes handle the full spectrum.
| Material Family | Common Alloys / Grades | Typical Applications |
|---|---|---|
| Aluminum | 6061-T6, 7075-T7351, 2024-T4 | Aerospace airframe brackets, housings, structural components |
| Titanium | Ti-6Al-4V (Grade 5), Grade 2 | Aerospace fastener components, orthopedic implants, defense hardware |
| Stainless Steel | 303, 304, 316L, 17-4 PH | Medical instrument housings, surgical tools, industrial fittings |
| Steel Alloys | 4140, 4340, 1018, 1045 | Drivetrain components, tooling, brackets, industrial hardware |
| Cast Iron | Ductile iron, gray iron | Automotive suspension housings, valve bodies, castings |
| Plastics & PEEK | PEEK, Delrin, UHMW, Nylon | Lightweight components, medical device parts, insulators |
Quality & Certifications
SMI-CA operates under the same quality management standards trusted by aerospace primes, Tier 1 defense suppliers, and medical device OEMs.
Industries Served
SMI-CA is an approved supplier to aerospace primes and Tier 1 contractors operating across the Los Angeles and Southern California supply chain. Our Santa Fe Springs facility is within 30 miles of the region's major aerospace and defense OEMs.
CNC Machining — Frequently Asked Questions
Do you offer AS9100D certified CNC machining for aerospace parts?
Yes. SMI CA, Inc. is AS9100D and ISO 9001:2015 certified. We machine flight-critical aluminum and titanium structural components with full material traceability, first-article inspection, and documented process control for aerospace primes and Tier 1 suppliers in Southern California.
What aluminum alloys do you machine for aerospace applications?
We machine 6061-T6, 7075-T7351, and 2024-T4 aluminum alloys — the grades most commonly specified for aerospace airframe brackets, structural housings, and actuation components. Material certifications and full lot traceability are provided with every order.
Can you machine titanium parts for aerospace and medical applications?
Yes. We machine Ti-6Al-4V (Grade 5) and Grade 2 titanium for aerospace fastener components, defense hardware, and orthopedic implant components. Our Haas 5-axis VMC and multi-axis turning centers handle the demanding cutting characteristics of titanium alloys with consistent results.
Do you machine parts for medical device enclosures or surgical instruments?
Yes. We machine medical device enclosures, surgical instrument housings, and implant components from 316L stainless steel and Ti-6Al-4V. Our AS9100D quality procedures — dimensional reporting, material certifications, process travellers — adapt directly to medical OEM documentation requirements.
Where is your CNC machining facility and what areas do you serve?
Our facility is at 14340 Iseli Road, Santa Fe Springs, CA 90670 — in the Los Angeles metro area, within 30 miles of the region's major aerospace and defense OEMs. We serve manufacturers throughout Los Angeles County, Orange County, Long Beach, Downey, Torrance, City of Industry, and Southern California.
Ready to discuss your machining requirements?
Send us your print or project details and we'll respond with a quote. For urgent inquiries, call us directly.
Custom QuotePhone: +1 (562) 926-9407 | Email: dok@smi-ca.com