Precision Aerospace CNC Parts | Critical Components for Flight-Critical Applications
At Shanxi Fuding International Trade Co., Ltd. , we combine over 14 years of precision engineering expertise with advanced multi-axis CNC technology to deliver aerospace-grade machined parts that meet the most demanding requirements of the aviation, space, and defense industries. Whether you need structural airframe components, complex engine parts, or avionics housings, our ISO 9001 certified facility ensures micron-level accuracy, full traceability, and uncompromising quality - all under one roof.
Aerospace Tolerances & Quality Standards
In aerospace machining, precision is not just a requirement - it's a matter of safety. Our capabilities meet the exacting standards of the industry:
|
Parameter |
Aerospace Requirement |
Our Capability |
|
Linear Tolerances |
±0.002mm – ±0.01mm (5-10× stricter than automotive) |
±0.002mm achievable |
|
Surface Roughness |
Ra ≤ 0.2μm for critical aerodynamic surfaces |
Ra 0.2μm – 0.4μm standard |
|
Circularity / Roundness |
≤0.005mm for bearing housings operating at 20,000-30,000 RPM |
≤0.005mm achievable |
|
Quality Certification |
AS9100D, ISO 9001, NADCAP compliance expected |
ISO 9001:2015 certified; AS9100-aligned processes |
|
Traceability |
Full material lot traceability via AS9102 FAI digital records |
ERP/OAS system with full traceability |
|
First Article Inspection |
Mandatory for all new aerospace parts |
Provided with every new project |
Did You Know? Aerospace tolerances are often an order of magnitude stricter than automotive standards. A tolerance of ±0.002mm, routine in aerospace, is almost unheard of in consumer industries .
Structural Components
|
Component |
Description |
Materials |
|
Ribs |
Define aerodynamic shape of wings, distribute loads across airframe. CNC-milled to linear tolerances within ±5μm to prevent distortion under aerodynamic loads exceeding 3-5g . |
Aluminum 7075, 2024, titanium |
|
Spars |
Primary load-bearing structures in wings and tail sections. Large components up to 15-20m length requiring 5-axis machining with advanced vibration control . |
CFRP laminates, high-strength aluminum |
|
Bulkheads |
Provide structural integrity for fuselage, distributing pressurization forces. Withstand cabin pressure differential of 8-9 psi, requiring dimensional consistency better than ±0.01mm . |
7075-T6 aluminum, titanium |
|
Landing Gear Beams & Joints |
Manufactured from 300M steel (modified 4340) with ultimate tensile strength ~1930 MPa. Require deep-hole drilling (depth-to-diameter >20:1) and stress-relief heat treatment . |
300M steel, 4340 alloy |
Engine & Powertrain Components
|
Component |
Description |
Materials |
|
Turbine Blades |
Operate at temperatures above 700-800°C and speeds of 20,000-30,000 RPM. Dimensional tolerances within ±0.02mm ensure aerodynamic efficiency. Even 1-2% deviation in blade geometry can increase fuel consumption by millions across a fleet . |
Inconel 718, nickel-based superalloys, titanium aluminide |
|
Turbine Vanes & Nozzles |
Direct gas flow through turbine section. Machined from high-nickel alloys designed for high-temperature and pressure environments. Sizes from 1.25" vanes to 28" multi-airfoil segments . |
High-nickel superalloys |
|
Gearbox Housings |
Require strict alignment with gear meshing error below 10-15μm for vibration control and transmission efficiency . |
Aluminum, magnesium alloys |
|
Engine Mounts |
Withstand both static and dynamic loads from thrust and vibration. In widebody aircraft, mounts often support loads exceeding 100-150 kN . |
Titanium, high-strength alloys |
|
Engine Spacers, Seals & Flow Path Parts |
Critical for engine efficiency and performance . |
Various superalloys |
Avionics & Electrical Housings
|
Requirement |
Specification |
Our Capability |
|
Dimensional Accuracy |
Even 0.1mm misalignment can cause EMI or poor contact integrity, directly threatening aircraft safety . |
±0.01-0.05mm standard |
|
Materials |
Aluminum 6061/7075 for lightweight shielding; stainless steel for durability; PEEK/Ultem for insulation . |
All materials in-house |
|
Surface Finish |
Ra ≤ 0.8μm to ensure tight sealing against dust, moisture, and EMI leakage . |
Ra 0.4-0.8μm achievable |
|
Post-Processing |
Anodizing, chromate conversion, or nickel plating improves conductivity and corrosion resistance by 20-30% . |
Full finishing capabilities |
Interior & Exterior Components
|
Component |
Requirements |
Materials |
|
Seat Tracks |
Anchor passenger seating, must withstand loads exceeding 16g during emergency landings. Tolerances within ±0.01mm . |
7075 aluminum |
|
Access Panels & Hatches |
Perfect sealing and alignment required; 0.05mm misalignment can compromise pressurization or allow moisture ingress . |
Aluminum, composites |
|
Aircraft Doors |
Endure cabin pressure differences exceeding 20,000 psi at cruising altitude. Geometry deviation beyond ±0.005mm could lead to catastrophic safety risks . |
High-strength aluminum, titanium |
|
Exterior Fairings & Winglets |
Surface finishes below Ra 0.4μm ensure smooth airflow and minimal turbulence . |
Aluminum, composites |
Our Aerospace CNC Machining Capabilities
|
Capability |
Specifications |
|
CNC Milling |
3-axis, 4-axis, and 5-axis machining centers for complex geometries and single-setup processing . Maximum part size up to 3800mm × 1300mm. |
|
CNC Turning |
Multi-axis turning centers with live tooling for complete part machining in single setups. Diameter range: 0.5mm – 480mm . |
|
Multi-Tasking |
Mill-turn centers for complex parts requiring both turning and milling operations . |
|
EDM (Wire & Sinker) |
For intricate features, hardened materials, and tight internal corners . |
|
Precision Grinding |
Creep-feed grinding, surface grinding, cylindrical grinding for hardened materials and ultra-precision finishes . Tolerances down to ±0.00125mm (0.00005") achievable . |
|
Superabrasive Machining |
For challenging nickel-based superalloys and hardened materials . |
|
Surface Finishing |
Anodizing (Type II/III), passivation, plating, powder coating, chemical film. |
|
Secondary Operations |
Heat treatment (AMS2750-compliant furnaces), laser marking, assembly, testing . |
|
Quality Inspection |
CMM, optical comparators, surface roughness testers, hardness testers, spectrometer. First Article Inspection (FAI) per AS9102 requirements . |
Materials for Aerospace Components
|
Material |
Properties |
Typical Applications |
|
Ti-6Al-4V (Grade 5 Titanium) |
Lightweight, corrosion-resistant, high strength-to-weight ratio |
Structural components, engine parts, airframe fittings |
|
Inconel 718 |
Heat-resistant nickel-based superalloy, retains strength above 700-800°C |
Turbine blades, jet engine components, propulsion systems |
|
Aluminum 7075 |
Ultra-lightweight, high fatigue resistance, tensile strength ~570 MPa |
Ribs, bulkheads, structural airframe components |
|
Aluminum 6061/6063 |
Good machinability, corrosion-resistant |
Avionics housings, brackets, non-critical structures |
|
17-4PH Stainless Steel |
High strength, corrosion-resistant |
Landing gear components, fasteners, structural hardware |
|
300M Steel (4340 Modified) |
Ultimate tensile strength ~1930 MPa, high fracture toughness |
Landing gear beams, critical structural joints |
|
PEEK / Ultem |
High-temperature polymers, dielectric strength |
Connector housings, insulation components |
Our Aerospace Manufacturing Process
Engineering & Design Review
You provide 2D/3D drawings (STEP, IGES, DXF, DWG, PDF) with material specifications.
Our engineers analyze your design for manufacturability, tolerance stack-up, and material selection.
We provide DFM feedback to optimize part geometry for aerospace requirements.
CAM Programming & Process Planning
Advanced CAM software with full 5-axis simulation generates optimized toolpaths.
For thin-walled or distortion-prone parts (like composite layups), we utilize specialized probing and best-fit alignment techniques to compensate for material variation .
Toolpath verification ensures right-first-time machining of high-value components .
Material Sourcing & Verification
Raw materials sourced from certified mills with full traceability.
In-house spectrometer verifies alloy composition before production.
Material certifications provided with final documentation.
Precision Machining
Parts are machined on our fleet of CNC milling, turning, and grinding centers.
5-axis simultaneous machining for complex geometries and single-setup processing .
In-process probing verifies critical features during machining.
Temperature-controlled facility ensures dimensional stability .
Quality Control & Inspection
First Article Inspection (FAI) : Complete dimensional verification per AS9102 requirements .
In-process inspection at regular intervals during production.
CMM inspection of all critical features with ±2μm repeatability .
NDT methods (ultrasonic, magnetic particle, dye penetrant) available upon request .
Secondary Operations
Heat treatment in AMS2750-compliant furnaces .
Surface finishing per specifications (anodizing, passivation, plating).
Strict Foreign Object Debris (FOD) control throughout all processes .
Final Documentation & Packaging
Full dimensional report with CMM data.
Material certifications and traceability documentation.
Custom packaging to prevent damage during transit.
Shipping by sea, air, or express with complete export documentation.
Engineering Support: Design for Aerospace Manufacturability
Our experienced engineers collaborate with you during the design phase to optimize your parts for aerospace machining:
Material selection guidance based on application requirements and machinability
Feature optimization to reduce machining time and cost
Tolerance rationalization - specifying only what's necessary for function
Thin-wall considerations for distortion-prone components
Deep-hole drilling strategies for high aspect-ratio features
Heat treatment planning for optimal mechanical properties
Quality Certifications & Inspection Equipment
We back every aerospace component with robust quality assurance:
ISO 9001:2015 certified quality management system (AS9100-aligned processes)
ERP/OAS integrated production tracking for full lot traceability
In-house inspection tools: CMM (Coordinate Measuring Machine), optical comparator, hardness tester, spectrometer, surface roughness tester, height gauges, thread gauges, pin gauges
First Article Inspection reports provided for all new parts
Material certificates and full traceability documentation
FOD control procedures throughout all manufacturing stages
Temperature-controlled facility for dimensional stability
one-stop solution
professional team
high quality
Case Study: Precision-Machined Components for Flight-Critical Applications
Challenge: A leading aerospace manufacturer required complex titanium brackets (Ti-6Al-4V) for a new aircraft program. The parts featured thin-walled sections (2.5mm), tight tolerances (±0.005mm), and required full traceability with First Article Inspection documentation.
Our Solution:
Developed custom fixturing to hold thin-walled sections without distortion
Utilized 5-axis simultaneous machining to maintain consistent wall thickness
Implemented in-process probing to verify critical features during machining
Provided complete FAI report with CMM data and material certifications
Results:
100% first-article approval with no non-conformances
Consistent surface finish meeting aerospace requirements (Ra ≤0.4μm)
Full traceability documentation for aerospace certification
Successful transition to production rates meeting customer timeline
This demonstrates how our aerospace machining expertise helps customers achieve ambitious program goals with confidence .
Technical Drawing Best Practices for Aerospace Parts
For optimal results, we recommend including the following in your technical drawings:
Complete 3D CAD model (STEP/IGES preferred)
2D drawing with critical dimensions and tolerances clearly marked
Material specification with grade and condition
Surface finish requirements (Ra values)
Thread specifications (if applicable)
Critical features clearly identified
Any special inspection requirements (NDT, CMM inspection)
Frequently Asked Questions