Where can I buy replacement seat bolts?

-I have one bolt that has hard to break loose and it got stripped from the socket slipping off it multiple times. I got it out but want to buy a new bolt. Where can I buy a new one from. It is a 2000 Chevy Silverado.most likely a dealer for the real bolt, napa carries tons of bolts but most sales counter guys dont want to fool with them, i buy all of mine from an ace hardware off the nut an screw aisle,they have screw guages and differnet grades of hardness you probably want a grade 8 for that for the shear strength if you in an accident you dont want it to shear loose, the factory one has a flared type head or built in flat washer, just buy a flat washer or lock washer sometimes i stack a flat first and then a lock,depending on the need,
Boltdepot.com

I usually have the stuff the next day if I order before 3PM. They're a lot higher quality than you'll get at most stores.