I did a bit of searching and found photos of a hand full of brass battery posts and couldn't find a single one that looked to have threads on the inside of it! you might be able to press a T-nut in or something but it's going to be hokey.
So I did a bit more searching as to why that battery has those style posts when every other battery does not... turns out what you have is a motorcycle battery! and motorcycles that I've worked on always have ring terminals that get bolted on so studs in that case are what you want, otherwise motorcycle batteries have a weird little flat lead tab with a bolt hole for a 6mm bolt!
So not only do you need a post to connect up to, but the studs that are there have the battery case close enough that once you have a post on there the cable end is not going to have any space to clamp on, so you need a spacer as well and of course you need everything to be a nice tight fit because when you crank the starter over you are drawing 100's of amps and a bad connection will melt.
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