I'm in a fraternity and have a stutter, and all of my brothers are aware of that and it's not a big deal at all. Don't worry about your stutter separating you from fitting in or anything like that; one of the great things about a fraternity is that you get close with a lot of different kinds of guys (personality wise, or maybe someone you wouldn't typically hangout with in your opinion) and you love all the guys for who they are. Just be comfortable with your stutter and don't let it keep you from being yourself, because that's what really matters. Your stutter doesn't have to define you whatsoever