Your rear wheel overhaul will be easier to execute and with a safer more professional outcome when you specify new sprocket bolts like these, rather than making do with the old corroded, maybe slightly damaged items!
Replacing the nuts at the same time would make the assembly easier to put together with new. interfacing threads on studs and nuts.
Order all the fastener components required at the same time and save money on shipping costs and avoid frustration later in your workshop or garage when you find a vital part missing! OE parts are not just great quality, they are great value as well.