could do, but

you are then, adding more possible movement and possible weakness, with un supported long bolt, with it all hanging on a 8mm thread of the nut.



ideally for strength,
drill thro the turret with a clearance hole, but not weld the nut on the flange washer,
then once its adjusted and set up, remove the wheel, then fit a lock nut on the end of the longer bolt under the turret.
So then its got the thread of the top mount, and a locknut, locking the two together.