Aerospace-Grade Precision CNC Turned Parts — 17-4PH & 303 Stainless Steel OEM Supplier

Short Description:

Precision Machining Parts

Machinery Axis: 3,4,5,6
Tolerance:+/- 0.01mm
Special Areas : +/-0.005mm
Surface Roughness: Ra 0.1~3.2
Supply Ability:300,000Piece/Month
MOQ:1Piece
3-H Quotation
Samples: 1-3 Days
Lead time: 7-14 Days
Certificate:Medical,Aviation,Automobile,
ISO9001,AS9100D,ISO13485,ISO45001,IATF16949,ISO14001,RoHS,CE etc.
Processing Materials: aluminum, brass, copper, steel, stainless steel, titanium,iron, rare metals，plastic, and composite materials etc.

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Why Aerospace Manufacturers Trust CNC Turned Stainless Steel Parts

When you’re sourcing aerospace components, precision and reliability aren’t just “nice to have” — they’re mandatory. A small tolerance issue in a stainless steel turned part can compromise the performance of an entire system. That’s why aerospace OEMs often choose CNC machining of stainless steel alloys such as 17-4PH and 303, which combine mechanical strength with corrosion resistance.

Our factory has worked with aerospace clients for over a decade, supplying tight-tolerance CNC turned parts for applications ranging from landing gear actuators to satellite hardware. After passing rigorous audits by aerospace customers, our machining process has been praised for its stability, accuracy, and consistency.

What Makes 17-4PH & 303 Stainless Steel Ideal for Aerospace?

Alloy	Key Properties	Aerospace Applications
17-4PH Stainless Steel	High strength, excellent corrosion resistance, heat-treatable to 1100 MPa tensile strength	Turbine components, fasteners, structural supports
303 Stainless Steel	Superior machinability, good corrosion resistance, suitable for high-volume CNC turning	Connectors, sleeves, bushings, non-critical aerospace fittings

First-hand insight: During one project for an aerospace actuator housing, we machined 17-4PH stainless steel to ±0.005 mm tolerances. Despite its high hardness, our team optimized cutting speeds and tool paths to maintain surface finish Ra ≤ 0.8 µm. This reduced post-machining polishing time by 25%.

How We Ensure Precision in Aerospace CNC Machining

5-Axis CNC Turning Centers: Capable of handling complex geometries in one setup.
CMM & Automated Inspection: Every batch is checked using coordinate measuring machines and laser scanning, ensuring full traceability.
Heat Treatment & Passivation: In-house processes enhance strength and prevent corrosion.
Material Certification: All stainless steel is sourced with EN10204 3.1 certification, meeting aerospace compliance standards.