Nut taps HSSE-V ( 3%V ) Stainless steels and structural steels Rm < 600 N/mm² ( <30 HRC / <290 HB / <145,000 PSI )
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°.
Handtap No. 2 with the same thread sizes as V108/1.
3 thread chamfer lead. Rake angle 6° - 8°.
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°.
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.