Threading Taps

Wrought aluminium alloys Si < 6%
(long-chipping)		  Machine tap with 45º right-hand spiral flutes, driving the chips to the back.
 Chamfer lead 2.5 threads (DIN-Form C).
 Rake angle 17º÷20º.


     ≤ 2 x d1Through hole

DIN 371 
DIN 376 - 374 - 5156   
COATING		    
DL140A DL140 Diamond-like carbon High speed steel class E with 3%
vanadium 1.3344 (EMo5V3) (M-3/2)		 Machine tap with 45° right-
hand spiral flutes, driving the
chips to the back
AC140A AC140 AlCrN coating
(Aluminium Chrome Nitride)		   Form C (chamfer lead
2-3 threads)
T140A T140 TiN coating (Titanium nitride)    
140A 140 Bright (without Coating or
without Surface treatment)		    


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