
 Originally Posted by 
Allan
					 
				 
				I was told by Bias Marine that stainless steel bolts/rivets are alloys worst enemy. A small hole today will be a big hole next year!
Allan
			
		 
	 
 Not quite worst - copper or brass/bronzeare worse, but stainless steel in contact with aluminium or its alloys is a recipe for disaster - and it won't be the stainless that is affected!  Any marine place will tell you the same. As Dave says, it is simply that you have formed an electrolytic cell.
If you use stainless steel bolts on a Landrover, you must ensure that they are not in electrical contact with any aluminium panels, using nylon washers and sleeves which you should be able to get from any marine chandler. 
In my view galvanised fasteners are superior as the galvanising prevents the steel from affecting the aluminium.
John
				
			 
			
		 
			
				
			
			
				John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
			
			
		 
	
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