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Small Part CNC Machining Precision Turning Parts
custom
We provide small part CNC machining services, ensuring the highest levels of precision and accuracy in every project. Trust us to deliver quality results every time.
minimum order
1 piece
Quantity
$0.05 - $0.05 / piece
We provide small part CNC machining services, ensuring the highest levels of precision and accuracy in every project. Trust us to deliver quality results every time.
| 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 Alignment Key Pin — a compact, high-accuracy mechanical locator engineered for modular tooling, optical alignment, PCB mounting, and precision assembly systems.
This dual-function component combines:
- Hollow cylindrical body (Ø6 mm × L12 mm standard) for weight reduction, cable routing, or shaft clearance
- Offset directional tab (with curved cutout) for anti-rotation locking and orientation control
- CNC-turned from solid 304 stainless steel or A6061-T6 aluminum — zero porosity, ±0.005 mm dimensional control
- Mirror-finish turning (Ra ≤ 0.6 μm) — ensuring smooth insertion and minimal wear
Unlike stamped or cast pins, this key pin delivers kinematic-level repeatability (positioning accuracy ≤ ±0.01 mm) and vibration-resistant fixation — critical when rotational drift > 0.5° causes system failure (e.g., in laser alignment, sensor calibration, or automated assembly).
Ideal for engineers building modular, field-serviceable, or high-reliability systems where every micron and degree matters.
· Core Specifications
| Parameter | Specification |
|---|---|
| Material Options | • AISI 304 Stainless Steel (standard: corrosion-resistant, non-magnetic) • A6061-T6 Aluminum (lightweight, anodizable) • AISI 4140 Alloy Steel (high-strength, for torque-critical apps) |
| Surface Finish | Turned satin (standard, Ra ≤ 0.6 μm); optional: Passivated (SS), Black Anodize (Al), or PVD TiN |
| Overall Dimensions | Ø6.0 mm (body) × L12.0 mm (length) × Tab width = 4.5 mm (standard); customizable: Ø4–10 mm × L8–25 mm × Tab = 3–8 mm |
| Bore | Internal through-bore: Ø3.2 mm (standard); optional: blind bore, stepped bore, or threaded (M3) |
| Tab Geometry | Offset by 1.5 mm from centerline; curved cutout (R1.0 mm) for snap-fit or clearance; angle = 90° (standard) |
| Tolerances | • Body OD: ±0.003 mm • Bore concentricity to OD: ≤ 0.005 mm TIR • Tab position (X/Y): ±0.01 mm • Length: ±0.02 mm |
| Manufacturing Process | Precision CNC turning (lathe) → tab milling (2-axis) → deburring → cleaning → surface treatment |
| Weight | ~1.8 g (304 SS, standard); ~0.9 g (Al) |
| Max Load Capacity | Axial push/pull: 350 N; Torque resistance (tab): 1.2 N·m (prevents rotation under vibration) |
| Operating Temp. | -40°C to +150°C (Al); -60°C to +250°C (304 SS) |
| Compliance | ISO 9001, RoHS, REACH, FDA-compliant (for medical-grade variants) |
· Application Scenarios
This key pin excels in high-precision mechanical integration:
- Modular Tooling & Fixtures
→ Quick-change locator for CNC pallets, robotic end-effectors, or assembly jigs
→ Tab engages with slot to prevent rotation during clamping - Optical & Laser Systems
→ Radial constraint pin for lens tubes, mirror mounts, or fiber couplers
→ Hollow bore allows fiber/cable passage without external conduits - Electronics & PCB Assembly
→ Anti-rotation pin for daughterboards, connectors, or heat sinks
→ Precise tab placement ensures consistent board orientation - Medical Devices
→ Locator for disposable cartridges, syringe drivers, or diagnostic modules
→ Non-magnetic (304 SS) or biocompatible options available - Aerospace & Defense
→ Kinematic interface for avionics modules or sensor pods
→ Vibration-resistant design meets MIL-STD-810G shock specs
💡 Why engineers choose this pin:
- Directional tab = foolproof orientation — eliminates assembly errors
- Hollow design = lightweight + functional (cable routing, thermal path)
- Solid billet = no weak points — survives repeated insertion cycles
- Customizable in days — not weeks like traditional machining
· Production Process Introduction
· Packaging and Shipping Methods
- Standard Packaging: 1 pin per anti-static PE bag; 100 pins per EPE tray; 1,000 pins per cardboard box.
- Bulk Options: 5,000–50,000+ units per pallet (custom tray inserts available).
- Shipping Methods:
- 📦 Express (DHL/FedEx/UPS): 3–7 business days (global)
- ✈️ Air Freight: 5–10 days (orders ≥ 1,000 pcs)
- 🚢 Sea Freight: 20–35 days (container loads)
- White-Label Services:
- Laser engraving (brand logo, part #, QR code)
- Branded blister packs (for retail or field kits)
- Kitted solutions (e.g., “Fixture Kit”: 100 pins + M3 screws + alignment jig)
· Frequently Asked Questions (FAQ)
Q1: What is the MOQ?
A:
A:
- Standard pin (Ø6×12 mm, 304 SS, tab offset 1.5 mm, bore Ø3.2 mm): 1,000 pcs
- Custom size/tab geometry/material: 5,000 pcs
- Samples: 10–20 pcs free for verified B2B customers (shipping paid)
Q2: What’s the lead time?
A:
A:
- In-stock designs: 5–7 working days after payment
- Custom CAD: 7–10 working days (includes design review & FAI)
- Rush service (≤5 days): Available for +15% fee
Q3: Can I customize the tab shape (e.g., rectangular, L-shaped), add a flat for wrench grip, integrate a magnet, or change the bore to threaded (M3)?
A: Yes — full customization is our strength:
A: Yes — full customization is our strength:
- Tab geometry: Curved cutout (standard), straight slot, L-tab, or custom profile
- Bore: Smooth-through, blind, stepped, or tapped (M2/M3/M4)
- Features: Wrench flat, magnetic insert (NdFeB), O-ring groove, or laser-etched ID
- Materials: 304 SS (standard), 316 SS (marine), A6061-T6, 4140 steel, or titanium
- Finishes: Satin (standard), black anodize, clear, PVD, or dry-lube
👉 Send a sketch, STEP file, or description — we’ll provide a 3D model, tolerance analysis, and quote within 2 hours.
Q4: Will the tab deform under repeated insertion? Is it durable?
A: Standard 304 SS tabs withstand >50,000 insertion cycles without deformation (tested per ISO 14971). For extreme-duty applications, we offer:
A: Standard 304 SS tabs withstand >50,000 insertion cycles without deformation (tested per ISO 14971). For extreme-duty applications, we offer:
- Hardened tab (304 SS + low-temp nitriding, surface hardness HV 350→450)
- Carbide-reinforced tip (laser-welded insert)
- Titanium version (Grade 2, for ultra-high cycle count)
Just specify your expected lifetime — we’ll engineer durability accordingly.
Q5: Do you provide GD&T drawings or assembly templates?
A: Yes — for every order, we provide:
A: Yes — for every order, we provide:
- Free downloadable CAD files (STEP, IGES, DXF)
- PDF GD&T drawing (ASME Y14.5 compliant)
- BOM-ready part numbering (SolidWorks/Onshape compatible)
- Functional test report (insertion force, runout, load data) upon request
· Why Choose YITECH?
✅ Directional Precision — Tab ensures correct orientation, every time
✅ Hollow + Lightweight — Functional design, not just structural
✅ Engineered for High Volume — Tight tolerances maintained across 50k+ units
✅ Trusted by Innovators — Used in semiconductor tooling, medical diagnostics, and autonomous robotics
✅ Hollow + Lightweight — Functional design, not just structural
✅ Engineered for High Volume — Tight tolerances maintained across 50k+ units
✅ Trusted by Innovators — Used in semiconductor tooling, medical diagnostics, and autonomous robotics
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Comprehensive score