Threading Taps

High alloyed steels
Rm = 1.000 ÷ 1.300 N/mm²
(30÷40 HRC)		  Machine tap with 25º right-hand spiral flutes.
 Chamfer lead 3.5 threads (DIN-Form D).
 Rake angle 3º÷5º.


     ≤ 2 x d1Blind hole

DIN 371 
DIN 376 - 374 - 5156   
COATING		    
T642A T642 TiN coating (Titanium nitride) High speed steel class E type M-42
1.3207 (EW 9 Co 10)		 Machine tap with 25° right-
hand spiral flutes, driving
the chips to the back
A642A A642 TiAlN coating
(Titanium Aluminium Nitride)		   Form D (chamfer lead
3.5-5 threads)
642A 642 Bright (without Coating or
without Surface treatment)		    


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