Where I bought mine..

 

That's what I did except I bought polished stainless ones. they have them their too.............

 

I'd also like to suggest that each time you have the primary cover off, that you put a little anti-seize lube (such as Permatex) on the threads before you put the bolts back in.

Also, don't use a torque wrench on these. Small handheld L-shaped allen head wrench will do. I have a "palm ratchet" I got at Sears some years ago -- great tool for this...

 

Ace hardware. Take an old fastener and screw it into the sizing board at the end of the aisle then find the stainless fastener of your choice. Don't forget the washers!