Q: I’m having issues with thread galling. We’ve switch to coarse threads and tried to slow down installation speed/over-tightening. Any other ways we can prevent this?

A: There are a few other things to consider in reducing thread galling. First, when possible use dissimilar metals with different hardness. Having material with slightly different properties usually helps. Another suggestion would be to us a lubricant or coating. This can be one of the most effective and easiest solutions. Molybdenum disulphide is an excellent high temperature lubricant for many industrial applications. As an example, the Extreme Anti-Seize MoS2 lubricant can be used from -65°F to 2400°F in temperature range. In addition, there is also dry film lubricants and tribological coatings which are also can be successful in preventing thread galling.