Parallel shank twist drills - jobber series, coating TiN
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Cutting conditions
Material | Strength |
---|---|
P.1 | Free-cutting steels, general construction steels | ≤ 600 N/mm² |
P.2 | General construction steels, steel castings | ≤ 850 N/mm² |
K.1 | Cast iron (≤ 240 HB) | ≤ 820 N/mm² |
K.2 | Cast iron (> 240 HB) | > 800 N/mm² |
N.1 | Aluminium, Aluminium cast alloys Si (Si ≤ 6%) | ≤ 400 N/mm² |
N.2 | Aluminium cast alloys Si (Si ≤ 12%) | ≤ 600 N/mm² |
N.3 | Aluminium cast alloys Si (Si > 12%) | ≤ 600 N/mm² |
N.4 | Cooper-zinc alloys, cooper-tin alloys | ≤ 800 N/mm² |
Product attributes
Lead of helix 25° - 30°.

Point angle 118°
High speed steel of average performance, it is applicable especially for cutters of smaller diameters and for milling of materials up to the strength of 900 MPa.