I just got 1/2 inch for my Indonesian Squier and the 1/2 inch is to small. I can either plug and re-drill or wrap some tape around the outside of the treaded top of the Hipshot
I use some tape to center the bushing so that I can mark the spot to drill for the screw. If the bushing moves, you may end up having the screw hole too close to the tuner hole itself, which may lead to splitting at that spot.