Threading Taps

Cast aluminium alloys Si>10%
short-chipping		  Machine tap with 15º right-hand spiral flutes.
 Chamfer lead 2.5 threads (DIN-Form C).
 Rake angle 14º÷16º.


     ≤ 2 x d1Blind hole

DIN 371 
DIN 376 - 374 - 5156   
COATING		    
DL142A DL142 Diamond-like carbon Special High speed steel
class E with vanadium		 Machine tap with 15° right-
hand spiral flutes, driving
the chips to the back
AC142A AC142 AlCrN coating
(Aluminium Chrome Nitride)		   Form C (chamfer lead
2-3 threads)
A142A A142 TiAlN coating
(Titanium Aluminium Nitride)		    


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