ThePipingMart Blog Fasteners How to Remove Galled Stainless Steel Bolts

How to Remove Galled Stainless Steel Bolts

How to Remove Galled Stainless Steel Bolts

Removing a galled stainless steel bolt can be a tricky task. When bolts become corroded and stuck, they can require extra time and effort to remove. Thankfully, there are some simple techniques you can use to safely and effectively remove the bolt with minimal effort. In this blog post, we’ll walk you through the steps of removing a galled stainless steel bolt.

Step 1: Prepare the Bolt for Removal

The first step is to prepare the bolt for removal. Start by examining the head of the bolt to determine if it has been damaged. If it is damaged or deformed, you may want to consider replacing it rather than attempting to remove it. Once you’ve determined that the bolt is in good condition, use a lubricant or penetrating oil on the threads of the bolt and allow it to sit for several minutes before attempting to loosen it. This will help break up any corrosion that may have built up over time.

Step 2: Apply Heat

If your attempts at loosening the bolt with oil have failed, your next step should be applying heat directly to the head of the bolt using an oxyacetylene torch or propane torch. Be sure not to apply too much heat; too much heat can cause damage to both the bolt and surrounding components and make removal more difficult. For best results, move the flame around in a circular motion while heating until you see signs of smoke coming from around the head of the bolt, indicating that corrosion has been loosened up enough for removal.

Step 3: Use Cold Temperatures

If all else fails, cold temperatures can be used as an effective way of loosening corroded bolts and nuts due to thermal expansion – when materials are heated, they expand, and when cooled, they contract, causing them to become loose. To use this method, place dry ice or liquid nitrogen onto or near the head of the galled stainless steel bolt until it becomes cold enough for removal (typically about -320°F). This method should only be attempted by experienced professionals, as improper use could cause serious damage or injury.


Removing a galled stainless steel bolt isn’t always easy, but with these tips, you should be able to do it without too much trouble! Make sure you take your time throughout each step and never rush into anything without double-checking that everything is secure before proceeding further. With these steps as your guide, you should have no problem removing those stubborn bolts quickly and safely!

Related Post