another anode question

[Roscoe P]

I just replaced the lower unit anode on my 2000 Yamaha C40TLRY. When I changed the anode on the lower bracket of the motor, one of the bolts broke. After pulling the old anode off I was able to remove the remaining piece of the bolt. My question is the are these special (zinc) bolts or can I use regular bolts that I can pick up at the hardware store?
Thanks

[robert graham]

You'll need a galvanized/zinc plated bolt....a plain steel bolt will rust/corrode.