Skip to content
pre ttech engineering

pre ttech engineering

September 6, 2023September 16, 2023

How to Prevent Thread Galling

Thread galling is the result of friction and adhesion between metallic surfaces that are meant to slide over each other. In this process, material from one surface gets attached to the other and causes damage. This can be extremely detrimental to the performance of a fastener, nut or screw. Luckily, there are preventative measures to take in order to avoid thread galling and keep your fasteners operating efficiently.

Metals that are resistant to galling, such as stainless steel, aluminum and Inconel, have a passivated oxide layer on their exposed surfaces that prevents corrosion and reduces direct metal-to-metal contact during fastening. However, this protective film can be rubbed off during installation pressures, which brings the softer metals into direct contact and creates friction that generates heat and eventually fuses them together into a solid mass.

Many different factors can contribute to thread galling, including the type of fastener, its materials and the way it is installed. For instance, high-quality fasteners can be manufactured with fine threads that are more prone to galling than coarse threaded options due to the smaller amount of turns they require. Threads that are not perpendicular to the bearing surface of the nut can also be more prone to galling, as can loosely installed threads. In addition, using tools that produce excessive friction and heat can increase the likelihood of galling.

All fasteners have some degree of roughness on their thread surfaces, and this can also increase the chance for galling. This is especially true of lathe cut bolts as they have rougher thread surfaces than those rolled between dies. However, the use of special anti-seizing and/or anti-galling lubricants can dramatically decrease the likelihood of galling.

These specialized lubricants typically contain additives such as molybdenum disulfide, graphite, mica, talc and extreme pressure waxes that are highly effective at reducing friction. In addition to these specialty lubricants, standard lubricants such as WD-40 can also be effective for reducing the chances of galling.

Another way to reduce the chance of thread galling is to install fasteners at a slower speed. This will reduce the amount of heat generated during tightening and allow time for that heat to dissipate.

Lastly, it is important to keep the fasteners clean during assembly and removal. This will help to reduce the friction between components and will prevent the accumulation of grit, dirt and other debris that can cause increased friction and lead to galling.

If you follow the tips discussed above, you can greatly reduce the occurrence of thread galling in your assemblies and prevent expensive repairs and downtime. For more information on thread galling or to obtain a product with anti-galling protection, contact the team at Norwood Screw Machine Parts. We provide a variety of performance-oriented fasteners enhanced with anti-galling defense mechanisms to ensure the longevity and efficiency of your assemblies.

ACTIVITY

Post navigation

Previous post
Next post

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Recent Posts

  • 500+ Best Chatbot Name Ideas to Get Customers to Talk
  • 500+ Best Chatbot Name Ideas to Get Customers to Talk
  • 13 Best AI Shopping Chatbots for Shopping Experience
  • Best 25 Shopping Bots for eCommerce Online Purchase Solutions
  • linkedin download for windows ✓ Get LinkedIn App for Windows Now!

Recent Comments

No comments to show.

Archives

  • March 2025
  • February 2025
  • January 2025
  • December 2024
  • November 2024
  • October 2024
  • September 2024
  • August 2024
  • July 2024
  • June 2024
  • May 2024
  • April 2024
  • March 2024
  • February 2024
  • January 2024
  • December 2023
  • November 2023
  • October 2023
  • September 2023
  • August 2023
  • July 2023
  • June 2023
  • May 2023
  • April 2023
  • March 2023
  • February 2023
  • January 2023
  • June 2021
  • May 2021
  • April 2021
  • March 2021
  • February 2021
  • January 2021
  • December 2020
  • November 2020
  • June 2020
  • August 5

Categories

  • ABOUT US
  • ACTIVITY
  • General
  • How to
  • Iphone
  • Management
  • Mobile
  • Setup
©2025 pre ttech engineering | WordPress Theme by SuperbThemes