MZS STEP DRILL

CAUTION FOR USE


Spot facing as shown above is not possible due to large diameter not having a back taper. Please contact us if spot face drills are required.	Chips from chamfer machining tend to be elongated and may cause jamming. It is recommended to peck feed to reduce the length of chips.	Cutting resistance increases on initial contact with chamfer. Reduce feed at this point.	The width of the chamfer is C1.0 for M4-M6, and C1.5 for M4-M12. For widths other than those stated above consultation is needed.