Hopefully, to get at least part of the threads of the stud below the area that's cracked. Since the stud is threaded into the block one time, and locked into place permanently with red LocTite, there won't be any torque load on the thread- - - -just a straight up pull from the nut on top of the stud.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!