Nothing Performs Better

world's most effective locknut

Minimize maintenance costs, reduce downtime, and improve equipment and machinery reliability by utilizing Security Locknuts. Our patented vibration-resistant products provide peace of mind because they “won’t back off” and are proven to perform in the most demanding applications. Engineered with a durable spring steel alloy, Security Locknuts do not damage or deform the bolt thread. Security Locknuts require no special tooling, can be quickly and easily installed, and can be reused, saving you time and material costs. We offer fast turnaround of popular sizes and can customize locknuts for your unique equipment. Let us help you find a fastening solution for your application.


  • Security Locknut Introduces New Brand

    Security Locknut rolls out its new image, better reflecting what they stand for...

  • ISO 9001/2008 Certification for 2015

    Security Locknut is recertified for new standards due in 2015...

  • Security Locknut Expands International Business

    SLN receives approval for two railroads in Australia...

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Customers Using Our Products

  • Union Pacific
  • BNSF Railway
  • Action Vibratory Equipment
  • Carrier
  • Caterpillar
  • Bay Area Transit Authority
  • Joy Global
  • Amtrak