Internal Tooth Washer

🔩 Internal Tooth Washer

(Compact Locking Washer for Electrical Grounding & Anti-Vibration Applications)

Neo Fasteners supplies precision-engineered Internal Tooth Washers, ideal for locking applications where space is limited and a clean outer profile is essential. These washers feature inward-facing teeth that grip the fastener shaft or mating surface, providing resistance against rotation, shock, and vibration. They are commonly used in electronic equipment, control panels, and electrical terminals, where both mechanical locking and good conductivity are required.

🔹 Product Overview:

An Internal Tooth Washer is a round, thin washer with sharp teeth on the inner circumference. These teeth bite into the bearing surface beneath the head of a screw or the nut, helping to prevent loosening under dynamic conditions. Their design is ideal for applications where an unobstructed outer edge is necessary or where washers must fit into recesses or tight spaces.

🔹 Key Features:

• Material Options:
  
  

  • Stainless Steel (SS 304 / SS 316)
    
    

  • Spring Steel
    
    

  • Mild Steel
    
    

  • Brass (for electrical conductivity)
    
    

• Finish Options:
  
  

  • Zinc Plated
    
    

  • Black Oxide
    
    

  • Nickel Plated
    
    

  • Plain / Self-Color
    
    

• Size Range:
  
  

  • M2 to M24 (Metric)
    
    

  • #4 to 1" (Imperial)
    
    

• Standards:
  
  

  • DIN 6797J, IS, ANSI, BS, Custom Spec Available
    
    

🔹 Advantages:

✅ Compact and space-saving design
✅ Provides firm grip on the fastener head or shaft
✅ Prevents loosening due to vibration or thermal changes
✅ Enhances grounding in electrical applications
✅ Aesthetic finish with no external teeth visible
✅ Reusable under light load applications

🔹 Common Applications:

• Electronic enclosures and PCB mounting
  
  

• Control panels and switchgear
  
  

• Electrical terminals and grounding points
  
  

• Automotive electrical systems
  
  

• Consumer appliances
  
  

• Communication and networking equipment
  
  

🛠️ Available Variants:

• Standard Internal Tooth Washer
  
  

• Countersunk Internal Tooth Washer
  
  

• Brass Grounding Washer
  
  

• Custom OD/ID configurations
  
  

✅ Why Choose Neo Fasteners?

✔️ ISO 9001:2015 Certified & RoHS Compliant
✔️ ROHS Compliant – Free of hazardous substances (EU 2011/65/EU and EU 2015/863)
✔️ Available in multiple materials and finishes
✔️ Bulk supply for OEMs and industrial clients
✔️ Custom sizing and technical support available
✔️ Quick delivery and export-ready logistics

Neo Fasteners – Your trusted supplier of locking, grounding, and vibration-resistant fastener components.

📞 Reach out now for technical data sheets, CAD drawings, or tailored quotations!