grease on screws

[hard-work]

The aim is to have screws/bolts that can be easily unscrewed in say, 10, 15, 20 years time. Say those securing a sink. What sort of grease would many recommend? Obviously grease that does not harden up of course.

thanks

 

[Nige F]

Copper grease or graphite grease ?

 

[magicmushroom666]

I'd use copper grease for that. Also the right combination of steel/stainless/brass etc can make a difference, but I'd have to look up what's good and what's bad. I've taken apart some very old equipment full of brass screws and they come out great.

 

[tomfe]

I'd second brass.

 

[^woody^]

I'm in awe of this level of planning ahead.

 

[John D v2.0]

Watch that you don't use disimilar metals where they might corrode. If it's wet conditions under a sink I'd use stainless screws

 

[John D v2.0]

Also not sure what you mean by harden up. Even thread lock doesn't get so hard that you can't unseal it.

 

[hard-work]

Also not sure what you mean by harden up. Even thread lock doesn't get so hard that you can't unseal it.

I have come across grease that hardened making matters worse to remove a nut or screw.

 

[JohnD]

for stainless, use Nickel grease.

It is sold in expensive tubs for boats, but a tube or mini-tin will last a lifetime. It is also useful in Aluminium, which reacts badly to copper.

It's the only grease I've come across that is recommended for stainless screwed into ally.

Type 42 Destroyers used to have a severe problem with dissimilar metals. Whatever was screwed to the deck made the deck-holes corrode, starting the day they were built. They're all scrap now, apart from one the Argies bought.