Internal Star Washer

🔩 Internal Star Washer

(Compact Locking Washer for Electrical Contact & Anti-Vibration Support)

At Neo Fasteners, we provide high-quality Internal Star Washers, engineered for applications that demand tight fastening, vibration resistance, and electrical continuity in limited spaces. These washers feature radially inward-facing teeth that offer a secure grip on fastener heads or mating surfaces—making them ideal for use in electrical terminals, PCBs, and compact mechanical assemblies.

🔹 Product Overview:

The Internal Star Washer—also known as an Internal Tooth Lock Washer—is a round, thin washer with sharp teeth along the inner circumference. These teeth bite into the screw or surface to prevent loosening under vibration or dynamic loads, all while maintaining a flush and clean outer profile that fits in recessed or close-clearance areas.

🔹 Key Features:

• Material Options:
  
  

  • Stainless Steel (SS 304 / SS 316)
    
    

  • Mild Steel
    
    

  • Spring Steel
    
    

  • Brass (for electrical use)
    
    

• Finish Options:
  
  

  • Zinc Plated
    
    

  • Black Oxide
    
    

  • Nickel Plated
    
    

  • Plain / Self-Color
    
    

• Size Range:
  
  

  • Metric: M2 to M24
    
    

  • Imperial: #4 to 1"
    
    

• Standards:
  
  

  • DIN 6797J, ANSI, IS, BS (custom standards available)
    
    

🔹 Advantages:

✅ Compact design for limited-space assemblies
✅ Prevents loosening due to shock, motion, or vibration
✅ Enhances electrical grounding and conductivity
✅ Flush outer surface for clean installation
✅ Cost-effective and reusable for low-to-medium loads

🔹 Applications:

• Electrical connections and terminals
  
  

• PCB mounting and electronic boards
  
  

• Switchgear and power distribution panels
  
  

• Compact motors and appliances
  
  

• Grounding systems in communication equipment
  
  

• Automotive and aerospace assemblies
  
  

🛠️ Available Variants:

• Standard Internal Star Washer
  
  

• Countersunk Internal Tooth Washer
  
  

• Brass Star Washer for electrical conductivity
  
  

• Custom sizes and finishes upon request
  
  

✅ Why Choose Neo Fasteners?

✔️ ISO 9001:2015 & RoHS Certified
✔️ ROHS Compliant – Free of hazardous substances (EU 2011/65/EU and EU 2015/863)
✔️ Bulk availability in various sizes and finishes
✔️ OEM and custom manufacturing options
✔️ Reliable export logistics and fast shipping
✔️ Dedicated technical support for all fastener needs

Neo Fasteners – Precision fastening components for industries where space-saving, security, and performance matter.

📞 Contact us today to request technical data sheets, samples, or bulk pricing!