I'm a home mechanic and recently noticed how rusty the cap bolt and the bolts on the stem are.

I have a specilized tarmac with the specialized stem. I assume all the bolts are pretty standard? What material should i be looking for? Titanium sounded good, but i hear they can break even if they're torqued to spec which is worrying.

What do you recommend replacing with and where can i purchase them from? I have 3 bike i would like to purchase for.

Thanks,