SASSAFRASS
Super Anarchist
There is absolutely no science to back this up but more often than not if I have a issue it's with a standard fastener, we use almost exclusively metric hardware and the profile of threads is much less.
Any lubricant helps. You don't need tef gel or antisieze. Using the proper length bolt is a good idea. Don't by bolts that are 1" too long. Every rotation of the nut increases the chance of galling. Cheap bolts gall easier. The thread tolerance can be bad.I was assembling something yesterday using a 5/8” 316 bolt and nylon insert nut.
Damn if that thing didn’t gall right before the final tightening turn.
I was tightening with hand tools.
Is there any way to prevent galling when using insert nuts?
I've had it happen on both Imperial and Metric. But it does seem to come in batches, which suggests that the thread tightness tolerance may be key. Commercial fasteners in SS are ALL from China now, and their performance to ANSI or SAE spec is questionable. I didn't have many problems 20 years ago when I could get domestically produced or even European fasteners.There is absolutely no science to back this up but more often than not if I have a issue it's with a standard fastener, we use almost exclusively metric hardware and the profile of threads is much less.
I'm calling BS on this entire comment. First stop using caps. Second the majority of stainless fasteners were and are made in Taiwan. That has been the case for the last 20 odd years. The US setup a bunch of companies in Taiwan to make stainless and several other expensive manufactured goods in the 80's and 90's. If you are old enough to remember paying obscene amounts of cash for a few 1/4-20's made in the USA in the 80's.I've had it happen on both Imperial and Metric. But it does seem to come in batches, which suggests that the thread tightness tolerance may be key. Commercial fasteners in SS are ALL from China now, and their performance to ANSI or SAE spec is questionable. I didn't have many problems 20 years ago when I could get domestically produced or even European fasteners.
Don't know how it would work in your application but I coat threads with beeswax.I was assembling something yesterday using a 5/8” 316 bolt and nylon insert nut.
Damn if that thing didn’t gall right before the final tightening turn.
I was tightening with hand tools.
Is there any way to prevent galling when using insert nuts?