Threading Taps

Wrought aluminium alloys Si < 6%
(long-chipping)
 Machine tap with spiral point, driving the chips ahead.
 Interrupted thread.
 Chamfer lead 4-5 threads (DIN-Form B).
 Rake angle 17º÷20º measured in the 3rd thread.


     ≤ 2 x d1Through hole

DIN 371 

DIN 376 - 374 - 5156   

COATING
   
DL130A DL130 Diamond-like carbon High speed steel class E with 3%
vanadium 1.3344 (EMo5V3) (M-3/2)
Machine tap with spiral point,
driving the chips ahead
AC130A AC130 AlCrN coating
(Aluminium Chrome Nitride)
  Interrupted thread
T130A T130 TiN coating (Titanium nitride)   Form B (with GUN-nose and
chamfer lead 3.5-5 threads)
130A 130 Bright (without Coating or
without Surface treatment)
   


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