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Prevailing Torque Nuts / Lock Nuts

Klincher Tough Locknuts - Proudly used by Nearly Every Major Aircraft Engine Manufacturer.

The Klincher Locknut was designed for high torque applications and industries. Many prevailing torque nuts or prevailing torque lock nuts attempt to address these high torque applications, but none perform as well as the Klincher Locknut due to its unique design. Photoelastic studies at a major US university have shown an equitable distribution of stress over the entire Klincher Locknut, versus a severe stress concentration in the first few threads of typical prevailing torque nuts. This unique stress pattern created in the Klincher Locknut, effectively lowers the strain on the bolt, allowing it to perform better and for a longer period, including many repeated uses. Note that these studies were done on the standard Klincher Locknuts, not the custom, modified Build-to-Print versions used in some industries.

Photo of Klincher Locknuts with How It Works! diagram Klincher Locknut

High torque is a factor that can negatively affect the performance of many lock nuts, self-locking nuts, high torque lock nuts, reusable lock nuts, prevailing torque nuts / lock nuts and various other fastening devices. But the Klincher Locknut was designed for high torque and that is one of the reasons why many jet engine, aircraft and aerospace companies, and other demanding industries, have continued to use them since their introduction in 1943. Dual Machine manufactures both standard Klincher Locknuts, as well as custom Build-to-Print versions for the aviation and aerospace industry, where different dimensions, tolerances and/or threading is required. In these cases, Dual Machine manufactures exactly what you specify for your specific application.

When high torque, high vibration, tensile strength, corrosion and high temperature are factors, companies rely on Klincher Locknuts. The Klincher Locknut’s unique design, even distribution of stress and loads, and ability to be reused, make it the perfect lock nut for demanding applications. Klincher Locknuts are commonly used in the following applications:

  • Aerospace / Aviation
  • Turbine Engines
  • Automotive Turbochargers
  • Military Applications
  • High Temperature Applications
  • High Vibration Applications
  • Ship Building Applications

For more details, study information, sizes, etc., see:

Klincher Locknuts – Performance Over the Years!

Contact us today to learn more about Klincher Locknuts and see how they can help you improve your product, process or application. Call 317-923-4786 or complete the form on our Contact Us page.

Klincher Quality. American Made.