External Star Washer

🔩 External Star Washer

(Aggressive Locking Action for High-Vibration and Grounding Applications)

Neo Fasteners supplies top-grade External Star Washers—also known as External Lock Washers—which are designed to provide superior locking performance and electrical conductivity in demanding industrial applications. These washers feature sharp, outward-projecting teeth that dig into the mating surfaces to prevent loosening caused by vibration, shock, or movement.

They are especially useful in electrical assemblies, automotive systems, and high-frequency equipment, where both mechanical locking and effective grounding are essential.

🔹 Product Overview:

An External Star Washer is a flat washer with multiple outward-pointing teeth spaced evenly around its outer edge. When compressed between a fastener and the surface, these teeth create friction and resistance, helping secure the joint and prevent back-off.

🔹 Key Features:

• Material Options:
  
  

  • Stainless Steel (SS 304 / SS 316)
    
    

  • Mild Steel
    
    

  • Spring Steel
    
    

  • Brass (ideal for electrical use)
    
    

• Finish Options:
  
  

  • Zinc Plated
    
    

  • Black Oxide
    
    

  • Nickel Plated
    
    

  • Plain / Passivated
    
    

• Size Range:
  
  

  • Metric: M2 to M30
    
    

  • Imperial: #4 to 1-1/4"
    
    

• Standards:
  
  

  • DIN 6797A, ANSI, IS, Custom standards available
    
    

🔹 Advantages:

✅ Aggressive locking against rotation and loosening
✅ Ideal for grounding in electrical connections
✅ Even pressure distribution while enhancing friction
✅ Helps maintain bolt torque under vibration
✅ Suitable for both conductive and non-conductive surfaces
✅ Reusable for light to moderate load cycles

🔹 Typical Applications:

• Electrical panels, terminals & switchgear
  
  

• Automotive body and engine parts
  
  

• Grounding applications in electronics
  
  

• Appliances and white goods
  
  

• Industrial machinery and controls
  
  

• Communications & power distribution units
  
  

🛠️ Available Variants:

• Standard External Star Washer
  
  

• Large OD External Star Washer
  
  

• Countersunk Profile (custom)
  
  

• Brass for electrical contact
  
  

✅ Why Buy from Neo Fasteners?

✔️ ISO 9001:2015 Certified & RoHS Compliant
✔️ ROHS Compliant – Free of hazardous substances (EU 2011/65/EU and EU 2015/863)
✔️ Multiple materials, sizes & finishes readily available
✔️ Custom tooling and OEM service options
✔️ Bulk supply & project pricing
✔️ Fast dispatch & export-ready logistics

Neo Fasteners – Your reliable supplier for locking, grounding, and anti-vibration washers, crafted to meet industrial, automotive, and electrical standards.

📞 Contact us today to get catalogs, specifications, or competitive quotes!