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Shoulder Dowel Pin

Shoulder dowel pins are precision alignment components featuring two distinct diameters, forming a defined shoulder between the head and the shank.

The larger diameter acts as a stop or mounting shoulder, while the smaller diameter is inserted into the hole for precise positioning. This dual-purpose design offers both accurate alignment and mechanical limiting, making it ideal for assemblies that require simultaneous positioning and restriction.

Product Features

  • Integrated stepped design combining positioning and stopping functions

  • Ideal for preventing over-insertion or slippage during assembly

  • Supports machining of internal threads, chamfers, and tolerance adjustments

  • Special sizes or step ratios can be customized based on customer drawings

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Material & Surface Treatment

  • • Heat-treated to HRC 36–42
    • Surface finish options: black oxide, zinc plating, or nickel plating
    • Suitable for general applications such as fixtures, molds, and structural components

  • Stainless Steel (SUS304)
    • Corrosion-resistant, ideal for semiconductor, medical, and outdoor equipment

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Size Range

  • Small diameter: Ø1mm to Ø20mm

  • Shoulder diameter and step height: customizable per drawing

  • Precision machining supported for h6 / h7 / m6 tolerances

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Applications

  • Limit stops in mold assemblies

  • Precise locating in automated fixture systems

  • Mechanical stop elements in industrial machinery

  • End-stop design in precision mechanical assemblies

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Customization & Notes

  • Custom features available: internal threads, double-thread ends, stop rings, etc.

  • Compatible with part numbers from McMaster-Carr and MISUMI

  • Low-volume orders and same-day stock service available on request

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