Aerospace CNC Components | Custom Precision Machined Parts

Aerospace CNC machining is a discipline of its own. Buyers who send drawings for flight-critical or structural parts already know the conversation starts with material certs, traceability, and process documentation rather than price. We have been machining aerospace components in Wenzhou since 1991, and our shop floor runs Star Swiss turning machines, 3-axis and 4-axis VMCs, and 5-axis machining centers all under one AS9100-aligned quality system. This page covers the parts we make most often, the materials we machine, and what you should expect when sourcing custom cnc machined drive enclosures and other flight-critical components from a Tier 1 supplier.

Send your drawing and 3D model to our aerospace RFQ form, or message us on WhatsApp at +86 188 6828 5255. We respond inside 24 hours with a feasibility review and a quote, and we flag any drawing notes that need clarification before tooling starts.

Common Applications for Aerospace CNC Components

The aerospace parts we machine most often fall into four categories:

• Avionics enclosures and drive enclosures: custom cnc machined drive enclosures for flight control computers, power converters, and electronic warfare modules. These parts are typically machined from 6061-T6 or 7075-T6 aluminum with ±0.01 mm tolerance on critical interfaces and anodised or chromate-conversion-coated for corrosion resistance.
• Hydraulic and pneumatic fittings: 304 and 316 stainless fittings for fuel, hydraulic, and pneumatic systems. Material certs are mandatory and we ship a mill cert with every lot.
• Sensor housings and brackets: small precision parts for IMU, GPS, pitot-static, and environmental sensors. Tight tolerances, small lot sizes, and 100% inspection are the norm.
• Structural fittings and brackets: 7075-T6 and titanium Grade 5 (Ti-6Al-4V) for primary structure and engine accessories. These parts are machined from bar stock to net shape or near-net shape with documentation on every feature.

Manufacturing Support from VOLCRIX

When an aerospace drawing arrives, our engineering and quality teams review four things before any cutting starts:

• Material cert and traceability: every bar and forging we machine comes with a mill cert showing chemistry, mechanical properties, and traceability to the original heat. We retain certs for 7 years.
• Process routing: machine selection, fixture strategy, tooling, and inspection checkpoints are written up in a routing sheet before the first part is cut. Aerospace parts are not run on a generic cell; they are run on dedicated equipment with calibrated tooling.
• First article inspection: AS9102 first article inspection reports are generated for every new part. The report includes every feature on the drawing, the measured value, the measurement method, and the equipment used.
• Special process certification: if the drawing calls for anodising, chromate conversion, passivation, or any other special process, we run it through a certified processor with paperwork on the lot.

For custom cnc machined drive enclosures in particular, we routinely hold ±0.01 mm on the mounting interface dimensions, ±0.02 mm on the cover flatness, and ±0.5° on the connector port axes. We also support EMI shielding variants with iridite or electroless nickel plating inside and out.

Buyer Checklist for Aerospace CNC Parts

Before sending a drawing for a custom aerospace component, make sure these four items are clear:

• Drawing revision and revision history: aerospace drawings change often, and the revision number on the RFQ must match the revision on the file. We have seen suppliers quote a part on a drawing that was two revisions old.
• Material specification: call out the alloy, temper, and any AMS or UNS specification. “Aluminum” is not enough — we need to know whether it is 6061-T6, 7075-T651, or 2024-T3.
• Critical features and GD&T: identify the features that drive form, fit, and function. For drive enclosures, that is usually the mounting flange flatness, the connector port position, and the lid seal groove.
• Inspection and documentation requirements: AS9102 FAI, PPAP, dimensional reports, material certs, special process certs. Tell us what paperwork you need and we will quote the inspection cost upfront.

Related Custom Manufacturing Services

• Aluminum housing manufacturing — CNC machined enclosures for electronics and aerospace
• CNC machining services — full shop floor capability for precision parts
• Precision shaft machining — shafts and turned components up to ±0.01 mm

Authority Summary

VOLCRIX runs an ISO 9001 and IATF 16949 certified quality system, with material traceability on every lot from the mill cert down to the individual part serial number. Critical dimensions are measured on a Zeiss coordinate measuring machine, and our inspection reports are formatted to customer requirements — AS9102 for aerospace, PPAP for automotive, and customer-specific formats where required. We have shipped aerospace components to commercial aviation, defense electronics, satellite communications, and UAV customers since 1991.

Frequently Asked Questions

What alloys do you machine for aerospace parts?

We machine 6061-T6, 7075-T651, and 2024-T3 aluminum; 304, 316, and 17-4 PH stainless; titanium Grade 5 (Ti-6Al-4V); A286 and Inconel 718 for high-temperature parts; and copper alloys C11000 and C17200 for electrical components. Every bar and forging is shipped with a mill cert, and we retain the cert for 7 years.

What tolerance can you hold on aerospace CNC components?

Standard machined features run ±0.02 mm to ±0.05 mm depending on geometry and material. Critical features on custom cnc machined drive enclosures and avionics housings run ±0.01 mm with surface finishes down to Ra 0.8 μm. We verify on a Zeiss CMM and the FAI report includes every feature on the drawing.

Do you support AS9102 first article inspection?

Yes. Every new aerospace part gets an AS9102 first article inspection report generated on our CMM and exported in the customer’s preferred format. The report includes every feature on the drawing, the measured value, the measurement method, the equipment serial number, and the operator signature. We also support PPAP for parts running into automotive or defense electronics lines.

Can you machine titanium and Inconel?

Yes. We machine titanium Grade 5 (Ti-6Al-4V) regularly for aerospace structural fittings and biomedical implants. Inconel 718 and A286 are run for high-temperature aerospace and turbomachinery parts. These alloys are abrasive and work-harden during cutting, so we use dedicated tooling, slower spindle speeds, and high-pressure coolant to control heat and tool wear.

Why VOLCRIX for Precision Manufacturing

VOLCRIX is a Wenzhou-based precision manufacturing facility that has run one-stop metal and plastic part production since 1991. Our shop floor holds more than 60 Star Swiss turning machines, 40 stamping presses, 20 injection molding machines, and 60 spring coiling machines, all tied together by a single quality system.

Every batch is verified on a Zeiss coordinate measuring machine, and a spectrometer checks incoming material chemistry on every coil and bar we receive. Surface finish, plating thickness, and hardness are tested in our in-house lab, and every shipment leaves with an inspection report. Our quality system is certified to ISO 9001 and IATF 16949, which is the same standard automotive Tier 1 suppliers run under.

We do not hide behind buzzwords. When a buyer sends a 3D model and a 2D drawing, our engineer reviews tolerances, callouts, and material grade before quoting, and we tell you on the first reply if a dimension is at risk or if a feature needs a small design change to be producible. That conversation is what separates a supplier that ships parts from one that ships risk.

Quoting turnaround is 24 hours for most RFQs, sample turnaround is 7 to 15 days depending on complexity, and production lead time after sample approval is typically 3 to 4 weeks. We support both small prototype runs and high-volume production, with no minimum order quantity on engineering samples and volume pricing that scales with annual usage.

Certifications and Compliance

• ISO 9001:2015 — Quality Management System
• IATF 16949:2016 — Automotive Quality Management
• ISO 14001:2015 — Environmental Management System
• RoHS / REACH compliance for restricted substances
• UL recognized manufacturing processes for electrical contacts
• CE conformity support for finished assemblies
• Conflict-free mineral sourcing (3TG compliant)
• Standard reference materials traceable to NIST

For a quote on custom cnc machined drive enclosures, structural fittings, or any other aerospace component, send your drawing and 3D model to our aerospace RFQ form. We respond inside 24 hours with a feasibility review, lead time estimate, and unit price.

Why Aerospace Tolerances Are Different

Aerospace tolerances are not just tighter than commercial tolerances; they are tighter in a different way. A commercial part might be drawn to ±0.05 mm because the assembly can absorb some variation; an aerospace part is drawn to ±0.01 mm or even ±0.005 mm because the system behind it cannot. A flight control computer that is 0.02 mm out of position on its mounting flange can induce a load path error in the airframe. A pitot-static housing that is 0.03 mm out of round can change the air data calibration. The drawing is tight because the consequence of being loose is severe.

That is why we treat aerospace parts as their own production line. The machines are calibrated more frequently, the tooling is segregated from commercial work, and the operators are trained on aerospace documentation requirements. Every setup is verified with a test bar before the first part is cut, and the first article inspection report is reviewed by a second engineer before it goes to the customer.

Material Traceability for Aerospace Parts

Every aerospace part we ship has a paper trail back to the original heat of material. The chain looks like this:

1. Mill cert: the metal mill issues a cert with the heat number, chemistry, and mechanical properties. We retain the original.
2. Incoming inspection: we verify the chemistry on a spectrometer when the material arrives, and we file the result against the heat number.
3. Lot tracking: every part we machine is logged with the lot number, the heat number, the machine it ran on, the operator, and the inspection record.
4. Shipment documentation: the cert, the inspection record, and the FAI report are bundled together and shipped with the parts. The customer can trace any individual part back to the original heat of material.

We retain these records for 7 years. For some defense programs the retention period is longer, and we have a separate archive for those parts.

Common Aerospace Alloys We Machine

• 6061-T6 aluminum: the default for aerospace structural parts and avionics enclosures. Good strength-to-weight ratio, weldable, and easy to anodise. Used in landing gear fittings, avionics housings, and ground support equipment.
• 7075-T651 aluminum: higher strength than 6061, used in primary structure and high-load fittings. More expensive and harder to machine, but the strength justifies it where the part sees real load.
• 2024-T3 aluminum: fatigue-resistant, used in aircraft skin and primary structure. More difficult to machine than 6061 and requires more careful tooling selection.
• Ti-6Al-4V (Grade 5 titanium): high strength-to-weight ratio, used in engine accessories, fasteners, and biomedical implants. Abrasive and work-hardens during cutting; needs dedicated tooling and slower spindle speeds.
• 17-4 PH stainless: precipitation-hardened martensitic stainless, used in landing gear components and high-stress fittings. Machines well in the H1150 condition, harder in the H900 condition.
• Inconel 718: nickel-based superalloy, used in turbine components and high-temperature aerospace parts. Very abrasive and work-hardens; needs ceramic tooling and high-pressure coolant.