> It all depends on who is making the shaft. If this is an aftermarket shaft such as OB or Predator,it SHOULD fit,just a matter of how snug,and how much the diameter is different at the joint seam. If you measure your joint and order a shaft from Dale,it WILL fit.
As far as I know,Perry uses the real-deal Uni-Loc Radial,and high-grade replacement shafts are tapped with the right tap to fit that.
There are,however,a couple imported cues that have a similar,but not identical rounded thread form,and these may NOT be interchangable. There are also different suppliers that make pins for cuemakers that may not be the exact same.
Stick with a known brand shaft,and it should work. A good repairman should be able to take an aftermarket shaft that is close,and make it perfect,not only in diameter but the fitting of the pin itself,and wouldn't cost much. Tommy D.