Originally Posted by 2000SilverBullet
Full bolt strength is achieved with two times the bolt diameter in length or depth of thread.
Which is why I'm leaving Haro a little bit of extra on the inside instead of a flush cut. Keep in mind the holding strength varies by the material you're threading into. In this case, it'* aluminum. I'll blend it and make it look good, he'll cut his bolts slightly (or maybe I will since I have them here) and he'll still have very good flow.
Paul, did you see your inlet and outlet on page 3?