What Are OEM Milling Stainless Steel CNC Turned Parts?
OEM Milling Stainless Steel CNC Turned Parts are high-precision, multi-process components designed for seamless integration into larger assemblies. As the name implies, these parts begin as Stainless Steel CNC Turned Parts, created on CNC lathes to establish primary cylindrical geometries, concentricity, and threads. They subsequently undergo precise CNC milling operations to add flats, slots, holes, pockets, or intricate contours that cannot be achieved by turning alone. Manufactured under strict OEM protocols, these parts guarantee consistency, traceability, and performance that meet or exceed your exact specifications for fit, function, and durability in demanding applications.
Parameters of Stainless Steel CNC Turned Parts
Our manufacturing capabilities for OEM Stainless Steel CNC Turned Parts are defined by the following precision parameters and material expertise.
| Parameter Category | Details & Specifications | |
|---|---|---|
| Combined Processes | Primary: Precision CNC Turning | Secondary: 3/4/5-Axis CNC Milling, Drilling, Tapping. |
| Standard Stainless Grades | 303 (Optimal Machinability), 304/304L (General Purpose), 316/316L (Marine & Chemical), 17-4PH (Precipitation Hardening), 416 (Martensitic). | |
| Standard Turning Tolerance | ±0.013 mm | Critical Milling/Dimensional Tolerance: ±0.02 mm. |
| Surface Roughness (Ra) | Turned Surfaces: 1.6 μm | Milled Surfaces: 3.2 μm (Can be improved with finishing). |
| Key Milling Capabilities | Cross-holes, flat surfaces, keyways, splines, off-center pockets, engraved markings. | |
| Available Finishes | Passivation, Electropolishing, Bead Blasting, Vibratory Finishing, Plating (Ni, Cr). | |
| Quality Documentation | Material Certs (3.1), First Article Inspection (FAI) Reports, Full Dimensional Reports, PPAP Support Available. | |
Why Choose JST's Stainless Steel CNC Turned Parts?
Choosing JST Industry guarantees superior quality, high reliability, and exceptional service. The stainless steel cnc turned parts we manufacture offer distinct advantages:
Integrated Turn-Mill Manufacturing
We streamline your supply chain by performing both turning and milling operations in-house, ensuring perfect alignment between features and reducing lead times for complex OEM Stainless Steel CNC Turned Parts.
OEM-Focused Quality & Consistency
Our processes are built for repeatable, batch-to-batch consistency. We provide full traceability and inspection reports tailored to OEM requirements, ensuring every part meets your print.
Expertise in Stainless Steel Machinability
We select and machine the optimal stainless grade (like free-machining 303 or corrosion-resistant 316) to balance performance with production efficiency and cost for your specific application.
Design for Manufacturability (DFM) Support
Our engineers collaborate with your team to optimize part design for the combined turn-mill process, suggesting adjustments that enhance durability, reduce cost, and improve manufacturability without compromising function.
Scalable Production Capacity
Whether you need prototypes, pilot runs, or sustained high-volume production, our flexible manufacturing setup is designed to scale with your program’s needs, ensuring reliable JIT delivery.
Typical Industry Applications
The precision and versatility of our Stainless Steel CNC Turned Parts with secondary milling make them ideal for critical sub-assemblies across diverse OEM sectors.
| Industry | Application Examples (Specific Components) |
|---|---|
| Fluid Handling & Valves | Valve stems with flattened actuator ends, pump shafts with keyways or cross-drilled holes, manifold blocks with port connections, sensor housings with mounting brackets. |
| Food & Beverage Processing | Mixer shafts with paddle attachment flats, fitting bodies with side ports, sanitary clamp ends with machined grooves, conveyor roller axles with bearing seat flats. |
| Medical Device Manufacturing | Surgical tool handles with textured grips (milled), adjustment knobs with dial markings, connector bodies with alignment slots, implant driver shafts with hex drives. |
| Automotive Subsystems | Fuel system components with mounting flanges, sensor fittings with wire exit ports, transmission linkages with pin holes, brake system pistons with groove features. |
| Electronics & Industrial Automation | Connector bodies with complex interfacing geometry, robotic end-effector fingers, guide rods with slots for sensor triggers, motor mounts with precision locating features. |
Our Customization Process
Upload & Review
Submit your drawings/3D files. Receive free DFM analysis within 24h.
Quote & Plan
Get a transparent, detailed quotation and production timeline.
Production & QC
Precision CNC machining begins with first-article inspection.
Finishing & Inspection
Apply surface treatments and conduct 100% final quality check.
Delivery & Support
Parts are safely packaged and shipped. Documentation provided.
Help Center
FAQ
Q1: What is the main advantage of combining turning and milling for a single part?
A: The primary advantage is achieving complex geometries in one seamless workflow. A part can be turned for perfect roundness and concentricity, then immediately milled to add off-axis features. This ensures higher accuracy between features, reduces handling and logistics costs, and simplifies quality control, which is crucial for OEM Stainless Steel CNC Turned Parts.
Q2: Can you work with our proprietary stainless steel alloy or specific material certification?
A: Absolutely. As an OEM partner, we are accustomed to sourcing materials to specific mill certifications or proprietary alloys. Please provide the material specification (e.g., AMS, ASTM, or internal spec) and certification requirements (e.g., 3.1 or 3.2) with your RFQ.
Q3: What information do you need to provide a quotation for such a component?
A: To provide an accurate quote for OEM Stainless Steel CNC Turned Parts, we need: 1) Complete 2D drawings (PDF/DWG) with all dimensions, tolerances, and GD&T callouts; 2) Material specification; 3) Target annual volumes; 4) Any required surface finishes or special packaging. 3D models (STEP) are highly beneficial for complex parts.
Q4: How do you ensure the concentricity between the turned body and the milled features?
A: We maintain concentricity through precision fixturing and process planning. Often, we design custom fixtures that locate on the turned diameters to machine the milled features in the same setup or on a transfer machine, guaranteeing the relationship between features is held to the tight tolerances required for OEM applications.
Q5: What is your typical process for qualifying a new OEM part?
A: Our standard qualification process includes: 1) DFM review and quote; 2) Production of initial samples for approval; 3) Submission of First Article Inspection (FAI) report per AS9102 or customer format; 4) Upon sample approval, we proceed to pilot run and then full-scale production, with Statistical Process Control (SPC) implemented as needed.
Guides You Might Need
How To Select Right CNC Milling Material For Your Project
Material selection happens early in the design process, but its effects ripple through everything that follows. The wrong choice shows up as parts that cost too much, wear too fast,
7 Key Questions When Choosing A CNC Milling Service Partner
Finding a machine shop isn’t hard. Finding the right one? That’s a different challenge entirely. The internet surfaces dozens of options within minutes, all claiming competitive pricing, quality workmanship, and
CNC Milling Services: Design To Delivery Guide
Getting parts made sounds simple enough. Send a drawing, receive finished components. But anyone who’s actually gone through the process knows there’s considerably more happening between those two points. Understanding
EN 
DE 
FR 
RU 
ES 
IT 
AR 
JA