ThePipingMart Blog Fasteners What is Prevailing Torque Lock Nut? Uses and Properties

What is Prevailing Torque Lock Nut? Uses and Properties

Prevailing Torque Lock Nut

Prevailing torque lock nuts have become increasingly popular in recent years, as they are designed to ensure that the nut remains securely fastened. This blog post will take an in-depth look at prevailing torque lock nuts and how they work.

What is  Prevailing Torque Lock Nut?

Prevailing torque lock nuts are fasteners that use a locking mechanism to prevent the nut from loosening due to vibration or other forces. This type of nut is designed to resist loosening, even when exposed to repetitive impacts or vibrations. The locking element of the nut creates friction between the threads, which prevents it from backing off.

The main benefit of using prevailing torque lock nuts is that they help ensure a secure connection between two components. This makes them ideal for applications where frequent vibration or motion could cause ordinary nuts and bolts to loosen over time. Additionally, prevailing torque lock nuts can be used in applications where parts need to remain secure even if exposed to very high vibration or shock loadings.

Types of Prevailing Torque Lock Nut

There are two primary types of prevailing torque lock nuts – all metal and nylon inserts. All metal prevailing torque lock nuts use a mechanical interference method such as thread deformation or serrations on the threads to provide resistance against loosening. Conversely, nylon insert prevailing torque lock nuts feature an internal nylon insert that creates friction between the threads and helps prevent them from backing off.

Prevailing Torque Lock Nut Uses

Prevailing torque lock nuts are often considered the most secure option for securing bolts and other fastening objects. Not only does a prevailing torque lock nut firmly secure the bolt in place, but it also slightly deforms to guarantee tightness in even the most demanding conditions. Prevailing torque lock nuts are popularly used across many industries, including aerospace, automotive and construction. They are often seen as the optimal choice due to their high level of security and flexibility; this allows them to be used within a wide range of materials and environments. These nuts have become an integral part of any fastening project – repeatedly proving their value with proven results.

Prevailing Torque Lock Nut Properties

  • Prevailing torque lock nuts are used to secure bolts and prevent them from loosening due to vibration.
  • Prevailing torque lock nuts are available in various materials, including steel, brass, and nylon.
  • Prevailing torque lock nuts are available in various sizes, depending on the application.
  • Prevailing torque lock nuts can be either internal or external threads.
  • Prevailing torque lock nuts are typically used in high-temperature or high-vibration applications.


In conclusion, prevailing torque lock nuts are essential for many applications due to their ability to remain securely fastened despite exposure to vibration and motion. They come in two varieties – all metal and nylon insert – so you can choose the best option for your specific application needs. If you’re looking for a reliable way to keep your components securely connected regardless of external forces, consider using prevailing torque lock nuts!

Related Post