Handtap No. 1 with pilot guide, to assure
the concentric start at manual threading.
Tapping only 3-4 threads is enough.
3 thread chamfer lead.
Rake angle 6°÷8°.
V108/2
Handtap No. 2 with the same thread
sizes as V108/1.
3 thread chamfer lead.
Rake angle 6°÷8°.
V108/3
Handtap No. 3 that finishes the thread to
the required tolerance.
Not suitable to use as single pass tap.
3 thread chamfer lead.
Rake angle 6°÷8°.
V108
Handtap set consisting of 3 taps:
V108 = V108/1 + V108/2 + V108/3.
You must tap continuously, it means
without stop and reversing the tap to
break the chip.
Stainless steels and structural steels
