Anti-Loosening Screw

• POWERLOK
  an excellent vibration proof and shock resistance by improving the lock action
  
• FIT-TITE
  provides a higher loose-proof effect
  
• NK GRIP
  provide a high fastening force with hardening
  
• SOFTLOK
  nylon is spread on thread surfaces
  
• Long-Lok
  producing a large loose-proof effect thanks to a high frictional torque
• APSLOK
  an anti-looseness screw that interferes with a special thread profile on the flank surface, which is relatively stable