R Walling Posted November 24, 2020 Share Posted November 24, 2020 I just read a post in the technical section with the above heading, It is a must read if you ever use Stainless Steel fasteners. 🛠️ Link to comment Share on other sites More sharing options...
46 woodie Posted November 24, 2020 Share Posted November 24, 2020 It's called "galling" and will literally weld the nut and bolt together and will make it impossible to remove. I have been using stainless steel fasteners for over 50 years and the key is to use anti seize compound. When you remove it, the anti seize will remain under the nut so a dab on the threads or a squirt of oil will allow the nut to be removed. 2 Link to comment Share on other sites More sharing options...
Eldovert Posted November 25, 2020 Share Posted November 25, 2020 A good way to weld them together is to use a power tool . Cheers,Pat Link to comment Share on other sites More sharing options...
chistech Posted November 29, 2020 Share Posted November 29, 2020 You need to use nuts and bolts of two different blends. Stainless galls when the same blend, i.e. 304, is used together. Here is a segment taken from Wikipedia. Galling can be mitigated by the use of dissimilar materials (bronze against stainless steel) or using different stainless steels (martensitic against austenitic). Additionally, threaded joints may be lubricated to provide a film between the two parts and prevent galling. Nitronic 60, made by selective alloying with manganese, silicon, and nitrogen, has demonstrated a reduced tendency to gall.[73] 1 Link to comment Share on other sites More sharing options...
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