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Corrosion Resistant CNC Stainless Steel Machining Fabrication
Custom
The CNC stainless steel machining delivers high-quality, durable, and corrosion-resistant parts. Ideal for medical, aerospace, and food processing industries.
minimum order
1 piece
Quantity
$0.50 - $0.50 / piece
The CNC stainless steel machining delivers high-quality, durable, and corrosion-resistant parts. Ideal for medical, aerospace, and food processing industries.
| Key Attributes | |
| Machining Capabilities | CNC Machining Processes:Broaching, Drilling, Etching/Chemical Machining, Laser Machining, Milling, Turning, Wire EDM, Rapid Prototyping |
| Materials Supported | Aluminum, Brass, Bronze, Copper, Hardened Metals, Stainless Steel, Steel Alloys, Plastic |
| Micro-Machining or Not | Micro Machining |
| Key Processes | CNC Milling, Turning, Drilling |
| Tolerance Standards | Industry-standard precision |
| Surface Treatments | Anodizing, Plasting, Polishing, etc. |
| Applications | Control Systems, Automotive Components |
| Place of Origin | Guangdong, China |
| Model Number | CUSTOM |
| Service Type | Customized OEM/ODM Manufacturing |
| Drawing Formats | PDF, CAD, IGES, STEP |
| Delivery Time | 7-30 Days |
| MOQ | 10 pcs |
· Product Overview
Introducing the YITECH Precision Stainless Steel Hexagonal Quick-Connect Couplers — a pair of high-performance, modular mechanical connectors engineered for rapid, tool-free assembly and disassembly of shafts, rods, or actuators in robotics, automation, and precision instrumentation systems. The set includes two complementary components:
- Left (Lying): A hexagonal body with side-threaded port + protruding male pin — designed for insertion into a mating female housing or panel.
- Right (Upright): A hexagonal body with top-mounted knurled adjustment cap + internal threaded bore — serves as the receiving/locking unit.
Crafted from A2-70 / 304 stainless steel, these couplers feature a matte brushed finish, precise CNC-machined geometry, and integrated functional elements (knurling, chamfers, thread rolling) that ensure smooth operation, zero backlash, and long-term reliability under cyclic loading. Unlike plastic or low-grade stamped parts, our design eliminates slippage, wear, and misalignment — making them ideal for applications where repeatability and durability are non-negotiable.
Perfect for modular robotic joints, sensor alignment fixtures, optical benches, and DIY engineering projects requiring quick-release functionality without sacrificing rigidity.
· Core Specifications
| Feature | Specification |
|---|---|
| Material | AISI 304 Stainless Steel (A2-70 grade), fully annealed for optimal machinability |
| Surface Finish | Uniform matte brushed (Ra ≈ 0.4 μm); electro-polished internal threads; knurled cap for grip |
| Body Shape | Hexagonal (6-sided), 12mm across flats (standard); optional 10mm or 15mm |
| Overall Dimensions | Standard: L = 22mm × W = 12mm × H = 18mm (upright); lying unit same body, 20mm total length |
| Male Pin (Left Unit) | Ø4mm cylindrical pin, length 6mm; press-fit tolerance: +0.002 / –0.000 mm |
| Side Thread (Left) | M3 internal thread (depth ≥5mm), perpendicular to pin axis — for auxiliary mounting or cable routing |
| Top Cap (Right Unit) | Knurled hex cap (Ø8mm × 6mm height), removable via finger-tightening; secures internal mechanism |
| Internal Bore (Right) | M4 / M5 internal thread (depth ≥7mm), cold-rolled for strength; accepts rods, shafts, or threaded adapters |
| Tolerance | ±0.015mm (critical features), ±0.03mm (overall), concentricity ≤0.02mm |
| Processing Method | 5-axis CNC turning + milling + thread rolling + knurling + deburring + passivation |
| Max Axial Load | 850 N (static, M5 version); tested at 500 N dynamic (10G vibration, 1M cycles) |
| Corrosion Resistance | >120 hours salt spray (ASTM B117), passivated per ASTM A967 |
· Application Scenarios
These hexagonal quick-connect couplers are purpose-built for modular, reconfigurable mechanical interfaces where speed, precision, and robustness matter:
- Robotics & Actuator Systems
→ Rapid joint coupling for modular arms (e.g., swapping end-effectors or grippers)
→ Servo-to-link connectors with adjustable preload
→ Linear actuator rod ends with quick-release capability - Optical & Sensor Integration
→ Laser module alignment mounts on optical tables
→ Camera/gimbal quick-swap bases
→ Enclosure feedthroughs for cables/sensors (side M3 port used for strain relief) - Industrial Automation
→ Pneumatic/hydraulic cylinder rod adapters
→ Tool changer interfaces for collaborative robots
→ Modular fixture systems in CNC jigs - DIY & Prototyping
→ STEM/robotics kits requiring tool-free assembly
→ Custom drone payload mounts (e.g., LiDAR ↔ frame)
→ 3D printer accessory hubs (e.g., filament spool holders, tensioners)
💡 Why this design stands out:
- Dual-function geometry: Hex body allows wrench tightening and finger-adjustment via knurled cap
- Integrated side port: M3 thread enables secondary fastening or wiring — no extra brackets needed
- Zero-backlash engagement: Precision-machined pin + bore ensures repeatable positioning (<0.03mm error)
- No adhesives or springs: Pure mechanical locking — reliable across temperature extremes
· Production Process Introduction
· Packaging and Shipping Methods
- Inner Packaging: 1 pair (left + right) per resealable anti-tarnish PE bag.
- Bulk Packaging: 100–1,000 pairs per cardboard box with custom foam dividers (prevents scratching).
- Shipping Options:
- 📦 Express (DHL/FedEx/UPS): 3–7 business days
- ✈️ Air Freight: 5–10 days (orders >1,000 pairs)
- 🚢 Sea Freight: 20–35 days (cost-effective for container loads)
- White-Label Service: Custom laser engraving (logo/part number), branded inserts, or kitted solutions (e.g., “Quick-Connect Kit” with M4 screws + O-rings) available.
· Frequently Asked Questions (FAQ)
Q1: What is the MOQ?
A:
A:
- Standard pair (12mm hex, M5 thread): 200 pairs
- Custom thread (M3/M4), size (10mm/15mm hex), or material: 500 pairs
- Samples: 2–5 pairs free for verified B2B customers (shipping paid)
Q2: What's the lead time?
A:
A:
- In-stock designs: 3–5 working days after payment
- Custom configurations: 7–10 working days (includes CAD review & tooling)
- Rush service (≤4 days): Available for +20% fee (subject to capacity)
Q3: Can I customize the pin diameter, thread size, or add features (e.g., O-ring groove)?
A: Yes! We offer full customization:
A: Yes! We offer full customization:
- Pin OD: Ø3mm – Ø6mm (with matching bore tolerance)
- Threads: M3, M4, M5, M6 (metric), or UNC #4–#8
- Body size: Hex across flats 10–20mm
- Features: O-ring grooves (for sealing), side ports (M2/M3), flanged base, or integrated set screws
- Material: 316L stainless (marine), 6061-T6 aluminum (lightweight), or brass (EMI shielding)
Just send your requirements — we'll provide a 3D model, tolerance analysis, and quote within 2 hours.
Q4: How do I assemble/disassemble?
A:
A:
- Insert the male pin (left unit) into the bore of the right unit.
- Finger-tighten the knurled cap until snug (no tools needed).
- For higher preload: use a small hex key (2mm) on the cap’s internal hex — max torque: 2.0 N·m.
- To release: unscrew cap counter-clockwise — pin detaches cleanly.
(Video demo available on our website)
Q5: Are CAD files provided?
A: Absolutely. Free downloadable:
A: Absolutely. Free downloadable:
- STEP / IGES / STL models (all standard variants)
- DXF templates for mounting plates
- Assembly instructions + torque charts
- Compatibility matrix for common platforms (OpenBuilds, URM, Robotis, etc.)
· Why Choose YITECH?
✅ True Mechanical Engineering — Not generic hardware; designed for real-world cyclic loads
✅ Tool-Free + Tool-Assisted Flexibility — Knurled cap works by hand or with hex key
✅ Modular by Design — Pair with our T-nuts, flange bushings, or L-brackets for full system integration
✅ Fast & Scalable — From 200-pair prototypes to 10k+ unit production
✅ Trusted Globally — Used in commercial robots, research labs, and aerospace prototyping
✅ Tool-Free + Tool-Assisted Flexibility — Knurled cap works by hand or with hex key
✅ Modular by Design — Pair with our T-nuts, flange bushings, or L-brackets for full system integration
✅ Fast & Scalable — From 200-pair prototypes to 10k+ unit production
✅ Trusted Globally — Used in commercial robots, research labs, and aerospace prototyping
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