For Point Numbers 4, 6, 8, 10
For 1/16in hole
Mandrel No.4 have a No. 3-48 thread and a hex nut flange
Maximum Safe Speed 25000 RPM with 1/2in overhang or less (exposed mandrel length)
For each additional 1/4in of overhang the Maximum Safe Speed is decreased by at least 20%