External Tooth Washer

🔩 External Tooth Washer

(Enhanced Locking Washer for Anti-Vibration and Electrical Grounding Applications)

At Neo Fasteners, we offer high-quality External Tooth Washers engineered for locking strength, vibration resistance, and improved electrical conductivity. These washers feature radially outward-facing teeth that bite into the bearing surface, providing a secure grip that prevents fastener loosening under dynamic loads.

They are widely used in electrical assemblies, automotive systems, electronics, and metal enclosures where both mechanical locking and grounding are critical.

🔹 Product Overview:

An External Tooth Washer is a disc-shaped washer with sharp, outward-projecting teeth designed to penetrate mating surfaces. This creates a locking action that resists unscrewing of bolts or nuts due to shock, vibration, or thermal cycling. The external tooth pattern also ensures excellent contact for electrical grounding.

🔹 Key Features:

• Material Options:
  
  

  • Stainless Steel (SS 304, SS 316)
    
    

  • Mild Steel
    
    

  • Spring Steel
    
    

  • Brass (for electrical applications)
    
    

• Finish Options:
  
  

  • Zinc Plated
    
    

  • Black Oxide
    
    

  • Nickel Plated
    
    

  • Plain
    
    

• Size Range:
  
  

  • M2 to M36 (Metric)
    
    

  • #4 to 1½" (Imperial)
    
    

• Standards:
  
  

  • DIN 6797A, IS, ANSI, BS, Custom on request
    
    

🔹 Advantages:

✅ Locks fasteners against loosening due to movement or vibration
✅ Improves electrical grounding in conductive assemblies
✅ Even load distribution while adding friction locking
✅ Prevents rotation of bolts and screws
✅ Compact and lightweight alternative to lock nuts

🔹 Common Applications:

• Electrical and electronic enclosures
  
  

• Control panels and terminals
  
  

• Automotive engine and body assemblies
  
  

• White goods and appliances
  
  

• PCB and circuit board mounting
  
  

• Communication equipment
  
  

• Grounding systems
  
  

🛠️ Available Types:

• Standard External Tooth Washer
  
  

• Countersunk External Tooth Washer
  
  

• Large OD Tooth Washer
  
  

• Brass External Tooth for electronics
  
  

• Custom tooth count or profile washers
  
  

✅ Why Buy from Neo Fasteners?

✔️ ISO 9001:2015 & RoHS Certified
✔️ ROHS Compliant – Free of hazardous substances (EU 2011/65/EU and EU 2015/863)
✔️ Wide range of sizes and finishes in stock
✔️ Material traceability and test certificates available
✔️ OEM & custom solutions supported
✔️ Competitive prices with fast delivery

Neo Fasteners – Your dependable partner for high-performance locking washers and fastening solutions engineered for reliability and safety.

📞 Contact us now for datasheets, drawings, or price quotes!