FREE RUNNING THREAD INSERTS

Free running thread inserts are ideal for thread repair and thread reinforcement

• Greater in diameter than the tapped hole.
  
• The diameter of the leading coil reduces due to the torque applied to the tang during assembly to allow it to enter the tapped thread
  
• The coils then expands with a spring-like action anchoring the insert permanently in place against the tapped hole.
• The helical insert automatically adjusts itself, radially and axially, to any expansion or contraction of the parent material.
• No staking, locking, swaging, keying, nor interference fit is required to retain helical thread inserts
  
• Eliminates stress concentration in parent material.​
  
• Available in both, metric and inch series
  
  • ​​M1.5 to M30
    
  • UNC: 2-56 to 1"
    
  • BSW: 3/16 to 1"
    
  • UNF: 6-40 to 1"
    
• Fine pitch inserts available
• BSP and NPT available on request