SPRING DOWEL PIN (SPD)

🔩 Spring Dowel Pin – SPD Type

(Flexible, Self-Retaining Fastening for Shear and Alignment Applications)

Neo Fasteners supplies premium-grade Spring Dowel Pins (SPD Type) designed to deliver secure, vibration-resistant fastening in dynamic mechanical assemblies. Also known as Slotted Spring Pins or Tension Pins, these fasteners feature a longitudinal slit that allows compression during insertion, providing a self-locking fit in holes and resisting loosening under vibration or motion.

🔹 Product Overview:

Spring Dowel Pins are hollow cylindrical pins with a longitudinal slot along the length. As they are inserted into a slightly smaller hole, the pin compresses and expands outward, applying radial force that holds it firmly in place. This feature allows reusability, flexibility, and shock absorption, making them a go-to solution for shear load applications.

🔹 Key Specifications:

• Type: Slotted Spring Dowel Pin (SPD)
  
  

• Design Standards:
  ▫ DIN 1481
  ▫ ISO 8752
  ▫ IS 5988
  ▫ ANSI B18.8.2 (inch series available)
  
  

• Material Options:
  ▫ Spring Steel (Hardened / Carbon Steel)
  ▫ Stainless Steel (SS 420 / SS 304 / SS 316)
  ▫ Brass (on request)
  ▫ Beryllium Copper / Nylon (for non-metallic or electrical assemblies)
  
  

• Finish Options:
  ▫ Plain (oiled)
  ▫ Black Oxide
  ▫ Zinc Plated (White, Yellow, Blue)
  ▫ Passivated (for stainless steel)
  
  

• Size Range (Metric):
  ▫ Diameter: 1.5 mm to 20 mm
  ▫ Length: 4 mm to 120 mm
  ▫ Wall Thickness: As per DIN 1481 / ISO 8752 standard
  
  

• Tolerance Fit:
  ▫ Press-fit into H11 or H12 hole
  ▫ Compressed on insertion to generate outward tension
  
  

• Certifications:
  ▫ ISO 9001:2015 Certified
  ▫ RoHS Compliant (EU 2011/65/EU & EU 2015/863)
  
  

🔹 Key Benefits:

✅ Self-locking fit – eliminates need for adhesives or threading
✅ Absorbs vibration and shock without loosening
✅ Simple press-fit installation without special tools
✅ Hollow design allows flexibility and ease of removal
✅ High fatigue resistance – suitable for dynamic joints
✅ Cost-effective and widely available

🔹 Applications:

• Automotive gear shafts and control linkages
  
  

• Transmission and gearbox components
  
  

• Hinges, levers, clutches, and mechanical couplings
  
  

• Tools, jigs, and fixtures
  
  

• Aerospace control systems
  
  

• Electrical appliance housing assemblies
  
  

• General-purpose mechanical joints
  
  

✅ Why Buy from Neo Fasteners?

✔️ Manufactured under ISO 9001:2015 certified processes
✔️ RoHS compliant – Export-ready and environmentally safe
✔️ Wide stock of standard metric and inch sizes
✔️ Bulk availability with quality consistency
✔️ Customization of length, material, or finishes on demand
✔️ Technical support and drawings available for OEM needs

Neo Fasteners – Your trusted partner for resilient fastening in motion-critical assemblies.
📞 Contact us today for technical datasheets, samples, or volume-based quotations.