OK so just about every bolt on my undercarage/fram are rusted. I want to replace them so that i don't have to worry about that ever again. so I was thinking stainless. I know that stainless galls/cold welds to itself, but I havent seen that it will stick to regular steel. I plan on using loctite to seal the threads, as i know this keeps moisture out. So I figure I should be ok. My only worry is that if it does get fused in there, drilling it out will be a nightmare. So is stainless ok or is a no-no?

Thanks Augie

 

Stainless is fine.
Use anti-seize instead of Loctite.

In fact, use anti-seize on every fastener.

 

Every non-critical (non-suspension) bolt on my car is stainless. Use anti-seize (as you should on every fastener that doesn't require threadlocker or sealant) and a lockwasher.

 

Yeah, just about every bolt under my car is rusted solid. I was pulling my Verts front subframe, and after I get done rethreading half the holes I was thinking of using stainless. But I wanna make sure they wont gall with the plain chassy steel.

So will the anti-seize keep moisture out of the treads as well?

 

OK I did a quick search, like I should have first.

Permatex® Anti-Seize Lubricant

A highly refined blend of aluminum, copper and graphite lubricants. Use during assembly to prevent galling, corrosion and seizing and to assure easier disassembly. Temperature range: -60°F to 1600°F (-51°Cto 871°C). Salt, corrosion and moisture resistant – ideal for marine use. Non-aerosol version meets Mil Spec #907E. Aerosol - Level 3*

Still curious about steel to stainless galling though.

 

It's just fine...It's up to you man...

 

Stainless only galls under certain circumstances. If you lubricate the threads upon assembly, you won't have an issue.

 

Yeah, i did some more research and discovered that Metals that gall, only really gall with themselves. I good example was that titanium which galls, and stainless, dito, don't fuse with each other. I also found that two dissimiler stainless compounds won't stick to each other.

Either way everthing under the car gets anti seize from now on, stainless or not!