Originally Posted by
HillRider
Yes, they will. And after that you can discard the crank since the square taper hole will no longer be square.
All taper holes deteriorate over time no matter what you do. All of my cranks have been loose at one time or another and, after many years, I still have to bottom out one. Even if I did, the alu hole could be restored, good for a number of extra years, by a judicious use of a chisel.