• Over-stroked installation
• Damaged mandrel
• Excessive material thickness
• Low engagement with installation mandrel

• Reduce stroke
• Replace mandrel
• Check fasteners effective grip range
• Ensure full thread engagement prior to installation

• Damaged or bent mandrel
• Oversized or irregular hole
• Incorrect anvil on installation tool

• Reduce mandrel if damaged
• Inspect and ensure hole size is correct and clean
• Ensure the correct matching anvil size is used

• Oversized or irregular hole
• Insufficient stroke
• Overgrip fastener used

• Inspect and ensure hole size is correct and clean
• Increase stroke on tool
• Check fasteners effective grip range
  
  

• Over-stroked installation
• Oversize hole with excessive stroke
• Irregular hole
• Overgrip fastener used

• Reduce stroke on installation tool
• Inspect and ensure hole size is correct and clean
• Check fasteners effective grip range
  
  

• Incorrect anvil or installation 
  tool 
  
  
  
  

• Ensure the correct matching size anvil 
  is used

Correct setting of a Nut Insert