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

SPP Spring Pins (Slotted Spring Pins)
Spring pins are flexible, cylindrical positioning components designed to secure shafts, housings, and mating parts. Manufactured according to various international standards, these pins feature a longitudinal slot that compresses upon insertion, providing reliable retention through elastic deformation.
Commonly used in mechanical assemblies, tooling fixtures, electronics, and automotive repairs, spring pins are ideal for applications requiring repeated assembly and disassembly.
Standard Spring Pins
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Standard: JIS B 2808
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Diameter Range: ø1.5 – ø30mm
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Materials: S50C (carbon steel), SUS304, SUS420
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Features: General-purpose, widely available, economical
Heavy-Duty Spring Pins
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Standard: ISO 8752 / DIN 1481
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Diameter Range: ø1.5 – ø20mm
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Materials: S50C (carbon steel), SUS304
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Features: Thick wall design, ideal for high-load applications
Applications
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Shaft alignment in automation systems
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Locating pins in jigs and fixtures
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Temporary fastening in motor housings, sheet metal, and vehicle structures
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Releasable joints in CNC-machined assemblies
Customization & Notes
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Suitable for through-hole and blind-hole installation
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Support for low-volume orders and OEM code matching
Reference Standards
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JIS B 2808
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ISO 8752
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DIN 1481
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ANSI / ASME B18.8.2
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CNS 1247