Sacrificial Anode Bolts

[Mike Noc]

Any reason why I can't use stainless steel bolts to hold the new sacrificial anode in place?

One of the original bolts seems to have been sacrificing itself faster than the anode.

 

[Tranona]

No reason from the galvanic perspective, but not necessary. Normally mild steel bolts are used, but if you are using them in wood you need to seal the bolt from the wood. Stainless runs the risk of crevice corrosion which the anode will not prevent.

 

[Mike Noc]

Many thanks for the reply Tranona. Will have a look to see what I have in the garage.

 

[Tranona]

Anode bolts are a different design from conventional bolts. Best to use the correct ones from MG Duff.

 

[maby]

The anode bolts should be the best protected bit of the boat! If they are rusting away, that anode isn't doing what it's there for and you need to review. Make sure the mating faces between the anode and the bolt/nut is very clean.

 

[VicS]

Anode bolts are a different design from conventional bolts. Best to use the correct ones from MG Duff.

In fact studs, not bolts.

usually zinc plated although MGDuff do offer stainless steel ones

fitting instructions on MGDuff's website http://www.mgduff.co.uk/leisure-craft/fitting-instructions/

 

[Mike Noc]

Thanks for the information. I'll strip out the old one on Sunday and then get everything I need.