corrosion protection on SS bolts in aluminum housing

[jgresham75]

Have some corrosion on SS bolts in aluminum outdrive. Not a major problem but does anyone have any suggestion to keep corrosion to a minimum? Anode are working fine. How about marine grease?

Thanks

 

[sschefer]

Re: corrosion protection on SS bolts in aluminum housing

Merc recommneds using 2-4-C Teflon lubricant. It's what I use and it works fine. You can usually get it at West Marine or any decent Marina.

 

[cr2k]

Re: corrosion protection on SS bolts in aluminum housing

You can also use Gasket Sealing Compound or Aviation Permatex.

 

[Brentathon]

Re: corrosion protection on SS bolts in aluminum housing

I'm curious exactly which bolts (and drive) are you talking about?
Any SS bolt that has good conductivity with an anode-protected drive shouldn't be corroding. My boat has spent 6 months/year out of the past 20 years in saltwater, and the ss bolts are perfect........the regular steel swivel shaft is another story, though.

 

[dubs283]

Re: corrosion protection on SS bolts in aluminum housing

Any SS bolt that has good conductivity with an anode-protected drive shouldn't be corroding

true the bolt won't corrode, but if installed into aluminum, there is a chance of siezing due to the contact of dissimilar metals

anode hardware is sold with a blue coating on the threads to ease the removal when replacing anodes, i have never had an issue removing them

if you must coat a SS bolt with anything, i would use perfect seal gasket sealer

 

[Outsider]

Re: corrosion protection on SS bolts in aluminum housing

The best preventive is to remove the bolt annually, chase the female threads, reinstall with a light grease coating ...

 

[ChampionShip]

Re: corrosion protection on SS bolts in aluminum housing

Wouldn't permatex anti-seize compound be the option for this?