Precision Fasteners & Custom CNC Components
Dowel Pins, Keys, Retaining Rings, Screws

Taper Pin (Locating Tapered Dowel)
Taper pins are cylindrical locating components with a slight taper, designed for precise alignment and anti-rotation positioning in mechanical assemblies.
The tapered geometry allows the pin to self-center during insertion, ensuring a tight and stable fit without the need for additional fastening elements. Taper pins are commonly used to secure shafts, gears, sleeves, and other rotational components.
Product Features
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Metric taper design (1:50) provides self-centering insertion
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Available in various types: slotted, internally threaded, etc.
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Suitable for repeated alignment, anti-rotation, and disassembly applications
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Ensures high-precision fit and strong shear resistance after insertion
Material & Surface Treatment
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S45C (Medium Carbon Steel)
• Hardness: HRC 36–42
• High strength and machinability, suitable for heavy-load positioning and mechanical assemblies -
SUS304 (Stainless Steel)
• Excellent corrosion resistance
• Ideal for electronics, medical devices, automation systems, or outdoor environments
Size Range
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Outer diameter: Ø3mm – Ø20mm
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Taper ratio: 1:50 (standard)
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Length: Customizable per drawing; standard and non-standard sizes supported
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Internal thread option available for easy removal
Applications
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Positioning connection between gears and bearings
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Accurate alignment between mechanical housings or enclosures
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Anti-rotation locking for drive shafts and couplings
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Repeated assembly and guiding in molds and fixtures
Standards & Customization Support
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Complies with: JIS B 1351 / ISO 2339 / DIN 1
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Compatible with McMaster-Carr and MISUMI part numbers
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Custom options include: slotted ends, internal threads, break-off tips, and more
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Drawings are welcome for evaluation and quoting