How you can prevent galling in your fastener applications.

Take care to avoid galling while using fasteners to construct an airplane. Fasteners are frequently employed in the building of aircraft. Over 3 million fasteners are used on a standard Boeing 747. Threaded fasteners may corrode or gall, regardless of the type of airframe they are used with.

What is Galling?

Galling, also referred to as thread galling, is a condition when a threaded surface accidentally adheres to another metal surface owing to friction. For instance, it might happen with nuts and bolts.

A bolt and nut may fuse together as they brush against one another. The surface breakdown caused by friction and heat during rubbing will cause the bolt and nut to stick to one another. Galling is the process of threaded fasteners rubbing against one another.

Select Reliable Top Quality Fasteners

By using high-quality fasteners, you can avoid galling. Fasteners vary in terms of strength and durability. These high-quality fasteners will cost more, but they will provide better protection against galling, so the investment will be worthwhile. More friction-related stress can be absorbed by high-quality fasteners without galling.

Start Slow when installing and removing

Another suggestion to avoid galling is to install and remove threaded fasteners at a modest speed. Power tools are still an option, but use caution when using them quickly. Galling could happen if you try to install or remove a threaded fastener using the quickest speed option. The bolt or nut may be galled if the power tool turns it too quickly.

Set your power tool to a slow speed level and gradually increase the speed setting as necessary to avoid this issue.

Use Anti-Seize Lubricants

To prevent galling, you might want to use anti-seize lubricant. A particular kind of lubricant called anti-seize lubrication is intended to stop fasteners and parts from galling and seizing.

Threaded fasteners will suffer reduced friction if they are greased with anti-seize lubricant. They can be installed and removed without being subjected to a lot of friction. The end outcome is improved defense against galling and seizing.

Keep a clean work area

Fasteners that are clean have a lower tendency to corrode than those that are unclean. It is a grave error to let dirt and debris accumulate on fasteners. They will cause a lot of friction when you install or remove them. The fasteners are at risk of galling since the dirt will rubbing against their surface.


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