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Below are some common questions we receive. Please contact us with additional questions.

How Does the Klincher Locknut Work / How is it Different?
The Klincher Locknut has a free spinning design to reduce the stress concentration found in the first three threads of a nut and bolt. This allows more wrench torque to be applied to the Klincher Locknut without plastic deformation to the bolt. The nut spins freely on the bolt down to the workpiece. After proper torque has been applied to the Klincher Locknut, the integrated washer compresses, causing the threaded section inside the washer to move in and lock radially and axially on the bolt. When the threads absorb a maximum load, they elongate a few thousandths of an inch, allowing the majority of the load to move up into the main body of the nut.
What Industries and Applications use Klincher Locknuts and/or Klincher Kapscrews?
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. Klincher Locknuts and Klincher Kapscrews are commonly used in the following industries and applications:

  • Aerospace / Aviation
  • Turbine Engines
  • Automotive Turbochargers
  • Military Applications
  • High Temperature Applications
  • High Vibration Applications
  • High Stress Applications
  • and more.
Are Klincher Locknuts Reusable?
Unlike many lock nuts, the Klincher Locknut is reusable as long as it stays within the specified torque values, the threads are not damaged and the overall length stays within the dimension. When these criteria are met, the Klincher Locknut can be reused and retains its locking qualities. Tests have shown that the Klincher Locknut was reusable after as many as 30 times. Note that these tests were done on the standard Klincher Locknuts, not the custom, modified Build-to-Print versions used in some industries.
What Sizes do the Klincher Locknuts Come In?
Klincher Locknuts are available in the following standard sizes. Custom Build-to-Print versions with modified dimensions, tolerances and/or threading can also be manufactured (such as for the aviation and aerospace industries).

  • # 4, # 6, # 8, # 10, 1/4″, 5/16”, 3/8”, 7/16”, 1/2″
  • Maximum size is 1.25” diameter in either fine or coarse threads.
What are your Machining Capabilities and Equipment?
We have the following types of machining equipment:

  • Swiss Machining Centers
    • When maximum speed and efficiency is needed.
    • 25” maximum diameter
  • Horizontal and Vertical Mazak CNC Machining Centers
    • Late model, high precision Mazak equipment.
    • Milling and Turning Capabilities.
    • 00” maximum part diameter for lathe / horizontal machining.
    • 20” x 40” table with a 20” rise on vertical machining center.
  • Traditional Rotary Screw Machines
    • Well maintained for consistent and reliable production.
    • 1.25” maximum diameter.

Klincher Quality. American Made.