I need to know the lengths and thread pitch for 97 f350 cc's cab bolts. And do they thread into the bushing or should they just slide out?

 

Can't help you with the bolt size, thread or length, but the bolt threads normally into a nut and can be removed after the threads are disengaged.

But I suspect you are really wanting to know how to separate the two halves of the bushings, for which you need to create a pulling device to do so. Pounding the bolt head from inside the cab is futile and a recipe for broken things, like fingers and stuff.

Do a search on 'body bushing' and you will find lots of advice and solutions.