I think it varies, both among us on the Spectrum, and the NT community. My wife will go nuts if there's a grain of sand in her shoe, and she'll have to stop immediately and take care of it, or if a shirt tag is made out of one kind of material vs. another, she can't wear the shirt. And she's NT. I'm H.F.A., and I couldn't care less about things that most people even consider painful, like injections or electric shocks. I have large body piercings, which honestly didn't bother me or stop me from doing it, but did hurt... It's just that pain of most kinds, is tolerable and I can even ignore it in many cases. Even jamming a big needle through the nipples. I can go all day with a big stone in my boot, and not bother to remove it. I'm probably the exception to the rule on this in the Autism/Asperger's community though, based on what I've read & heard.
Charles