Metric Fine Mf M 10 x 1.0  10 mm LEFT Hand Taps Serial Form

Taps are to DIN 352 HSS-G    Tolerance ISO2/6H

This form of Hand Tap consists of 2 taps  for Metric Fine threads made up of a Roughing Tap and a Finishing tap (see below  for more information).

This form of tap is ideal for  tougher materials because the thread is formed in stages as opposed to NON serial  taps which form the thread in one pass and use the conventional Taper Second  and plug.

The roughing tap which takes out half  the
thread area is marked with a ring on the shank for identification.
Only the plain shanked
Finish tap cuts SIZE. This form of hand tap is recommended for
materials like stainless steel and non-abrasive materials up to 900N/mm2