Industrial Precision Dowel Pins: The Foundation of Perfect Alignment
Our Dowel Pins (also known as Parallel Pins or Locating Pins) are the essential choice for high-precision mechanical assemblies. Unlike standard fasteners, these pins are precision ground to microscopic tolerances to ensure parts are aligned with absolute accuracy. Whether you are building complex injection molds or high-performance automotive engines, our pins provide the shear strength and dimensional stability required for critical applications.
We offer Metric & Inch Dowel Pins in various materials, including Through-Hardened Alloy Steel (HRC 58-62) for high-wear environments and 304/316 Stainless Steel for corrosion resistance.
| Diameter Range (mm) | m6 Tolerance (μm) | h6 Tolerance (μm) | Fit Type |
|---|---|---|---|
| 1.0 – 3.0 | +2 / +8 | 0 / -6 | Press Fit / Slip Fit |
| 3.1 – 6.0 | +4 / +12 | 0 / -8 | Press Fit / Slip Fit |
| 6.1 – 10.0 | +6 / +15 | 0 / -9 | Heavy Interference |
| 10.1 – 18.0 | +7 / +18 | 0 / -11 | Structural Alignment |
*Custom tolerances like p6, f7, or h8 are available upon request for specialized engineering needs.
- Alloy Steel (DIN 6325): Through-hardened to HRC 58-62. Exceptional wear resistance and shear strength. Ideal for tool and die work.
- Stainless Steel 304 (A2): Corrosion-resistant and non-magnetic. Best for food processing and medical equipment.
- Stainless Steel 316 (A4): Superior resistance to chlorides and marine environments.
- 420 Stainless Steel: Heat-treatable stainless steel, offering a balance between hardness and corrosion protection.
Strict Quality Control (QC) Process
Every Precision Ground Pin undergoes a multi-stage inspection to ensure zero-defect delivery:
Q: How do I choose between ISO 2338 and DIN 6325 Dowel Pins?
A: ISO 2338 refers to unhardened pins, while DIN 6325 specifies through-hardened pins. Use DIN 6325 for heavy-duty industrial molds and ISO 2338 for light-duty positioning.
Q: Why are Dowel Pins chamfered at the ends?
A: The chamfered (beveled) ends act as a lead-in, making it much easier to align the pin with the hole and preventing damage (scoring) to the workpiece during press-fitting.
Q: Can you manufacture custom oversized Dowel Pins?
A: Yes. We can produce pins up to 50mm in diameter and 300mm in length with custom stepped or threaded designs based on your drawings.
- Coated in premium VCI (Volatile Corrosion Inhibitor) oil.
- Vacuum-sealed in heavy-duty poly bags.
- Packed in double-walled export cartons and secured on ISPM-15 compliant pallets.
Lead Times: Standard sizes are in stock for 48-hour dispatch. Custom orders typically take 10-15 working days.
Get a Precision Dowel Pin Quote Today
Looking for a reliable manufacturing partner for High-Precision Pins? We offer competitive wholesale pricing and worldwide shipping. Send us your specifications or drawings now!
