Dongguan Yuelinsen Metal Technology Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 50000000pcs |
| Delivery Time | 5-8 working days |
| Packaging Details | Vacuum packaging cardboard box |
| Productname | Medical Machining Parts |
| Material Capabilities | Aluminum product,copper product |
| Process | Cnc Machining+deburrs, Anodized black |
| Quality Control | 100% Full Inspection Before Shipment |
| Biocompatibility | Meets biocompatibility standards for implantable devices |
| Manufacturingprocess | CNC Machining, Milling, Turning |
| Composition | Stainless Steel |
| Leadtime | 2-4 weeks depending on order size |
| Quantity | Prototype to Mass Production |
| Surface Treatment | Polished |
| Inspection | 100% Dimensional Inspection, CMM Reports |
| Feature | Slip Resistant |
| Application | Medical Devices, Surgical Instruments |
| Special Use | Medical Stainless Steel |
| Heattreatment | Available upon request |
| Brand Name | Yue lin sen |
| Model Number | Y2667 |
| Certification | ISO 9001 ISO 13485 |
| Place of Origin | Guangdong |
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Product Specification
| Payment Terms | T/T | Supply Ability | 50000000pcs |
| Delivery Time | 5-8 working days | Packaging Details | Vacuum packaging cardboard box |
| Productname | Medical Machining Parts | Material Capabilities | Aluminum product,copper product |
| Process | Cnc Machining+deburrs, Anodized black | Quality Control | 100% Full Inspection Before Shipment |
| Biocompatibility | Meets biocompatibility standards for implantable devices | Manufacturingprocess | CNC Machining, Milling, Turning |
| Composition | Stainless Steel | Leadtime | 2-4 weeks depending on order size |
| Quantity | Prototype to Mass Production | Surface Treatment | Polished |
| Inspection | 100% Dimensional Inspection, CMM Reports | Feature | Slip Resistant |
| Application | Medical Devices, Surgical Instruments | Special Use | Medical Stainless Steel |
| Heattreatment | Available upon request | Brand Name | Yue lin sen |
| Model Number | Y2667 | Certification | ISO 9001 ISO 13485 |
| Place of Origin | Guangdong | ||
| High Light | 304 Stainless Steel Threaded Rod ，CNC Milled Long Shaft ，Precision Threaded Rod | ||
The 304 Stainless Steel CNC Milled Long Shaft Threaded Rod is a precision-engineered linear component manufactured from solid 304 stainless steel bar stock using advanced CNC milling and turning processes. Characterized by its extended length, precise external threading, and straightness, this rod is designed for applications requiring a combination of tensile strength, corrosion resistance, and accurate linear motion or fastening over a considerable distance. Its CNC-machined construction ensures consistent thread quality, dimensional accuracy, and surface finish along its entire length, making it superior to standard rolled or cut threaded rods for critical assemblies.
Material Preparation: Sourcing and cutting of certified 304 stainless steel round bar to required blank length, often including stress-relieving for long rods to minimize machining distortion.
CNC Turning (Primary): Machining the entire rod on a precision CNC lathe to achieve the target outer diameter, ensuring consistency and straightness over the long length. Use of steady rests and follow rests is critical.
Thread Milling (Preferred Method): Using a thread milling cutter on a CNC mill or lathe with live tooling to cut the threads. This method offers superior accuracy, surface finish, and the ability to create custom thread forms compared to traditional die cutting.
Secondary Milling Operations: Adding flats, grooves, keyways, cross-holes, or other non-cylindrical features along the shaft using CNC milling.
Heat Treatment (Optional): Solution annealing to relieve machining stresses, especially for very long or precision-ground rods.
Straightening & Precision Grinding (High-End): For applications requiring exceptional straightness or diameter tolerance, the rod may undergo centerless grinding.
Surface Finishing: Passivation (per ASTM A967) is standard. Electropolishing can be applied for a smooth, clean, corrosion-resistant finish.
Inspection & Measurement: Comprehensive inspection including length, diameter, thread pitch/diameter verification (with thread gauges or optical comparators), and straightness measurement.
Precision Machinery & Automation: Lead screws, actuator shafts, guide rods, and ball screw pre-load adjusters in linear motion systems.
Medical & Laboratory Equipment: Adjustment rods, structural supports, and precision positioning components in imaging devices, analyzers, and surgical tables.
Food & Beverage Processing: Conveyor system components, mixer shafts, and adjustment mechanisms where corrosion resistance and cleanability are crucial.
Marine & Chemical Equipment: Valve stems, pump shafts, and tie rods in corrosive environments.
Optical & Photonic Mounting: Precision posts and adjustment rods for lens, mirror, and laser mounting.
Architectural & Display Systems: Structural tension rods, curtain rail supports, and display mount components.
| Parameter Category | Specification | Details & Options |
|---|---|---|
| Material | Alloy | 304 Stainless Steel (UNS S30400, ASTM A276). Excellent corrosion resistance, good strength, non-magnetic when annealed. |
| Manufacturing Method | Process | CNC Machined from Solid Bar Stock. Superior dimensional control and thread quality vs. rolled threads. |
| Thread Specifications | Thread Type | Metric (ISO): M4, M5, M6, M8, M10, M12, etc., with standard pitch. Unified (ANSI/ASME): 1/4-20, 5/16-18, 3/8-16, 1/2-13, etc. Acme, Trapezoidal, or Custom Threads available. |
| Thread Quality Class | Metric: 6g (external, standard), 4g6g (tighter). Unified: 2A (standard), 3A (high precision). |
|
| Thread Length | Can be full length or a specified partial length of the rod. | |
| Dimensional Specifications | Rod Diameter (Major Diameter) | Common Range: 3 mm (M3) to 50 mm (M50 or 2") and larger. |
| Overall Length | Key Capability: Long shaft machining. Typical range from 100 mm to 2000 mm. Longer lengths possible with specialized equipment. | |
| Straightness Tolerance | Critical for long rods. Standard Machined: 0.1 mm per 300 mm. Precision Ground: 0.02 mm per 300 mm. |
|
| Tolerances | Diameter Tolerance | Standard: h11 or h9 (ISO). Precision: h7 or h6. |
| Thread Pitch/Diameter Tolerance | As per the specified thread class (e.g., 6g, 2A). | |
| Mechanical Properties (Typical, Annealed) | Ultimate Tensile Strength | 515 MPa (75 ksi) min |
| Yield Strength (0.2% Offset) | 205 MPa (30 ksi) min | |
| Elongation | 40% min | |
| Surface Finish | As-Machined/Turned | Ra 1.6 μm - 3.2 μm. |
| Ground | Ra 0.4 μm - 0.8 μm. | |
| Electropolished | Ra ≤ 0.4 μm (smooth, bright, enhanced corrosion resistance). | |
| Secondary Features | Machined Ends | Chamfered, squared, center-drilled, drilled & tapped, or with special drive features (hex, slot). |
| Intermediate Features | Grooves (for circlips), flats, keyways, cross-holes, undercuts. | |
| Corrosion Resistance | Standard Treatment | Passivation per ASTM A967 (Nitric or Citric Acid method). |
| Certification & Traceability | Material Certification | Mill Test Certificate (MTC) provided confirming composition and properties. |
| Production Lead Time | Standard Items | 2 - 4 weeks. |
| Custom/Long Length/High Precision | 4 - 8 weeks. |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2018
Total Annual:
1 million-2 million
Employee Number:
20~50
Ecer Certification：
Verified Supplier
Dongguan Yue Lin Sen Metal Technology Co., Ltd. has passed the GB/T 19001-2016/ISO 9001:2015 quality management system certification and the GB/T 42061-2022/ISO 13485:2016 medical device quality management system certification. It specializes in the research and production of non-standard metal medi... Dongguan Yue Lin Sen Metal Technology Co., Ltd. has passed the GB/T 19001-2016/ISO 9001:2015 quality management system certification and the GB/T 42061-2022/ISO 13485:2016 medical device quality management system certification. It specializes in the research and production of non-standard metal medi...
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