BT, & HSK: What's the Important Differences for my …
There are several major differences between "steep taper" toolholders, like NMTB, & BT and HSK. Taper: NMTB, BT and -V holders typically use a 7:24 taper while HSK uses a shallow 1:10 taper Dual Contact: NMTB, and BT only have taper contact with the spindle while HSK is designed for both Taper and Flange contact …
