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Cutting Tools
Overview – Machine thread drills
Material group
Steels
up to
850
N/mm
2
C
C
C
C
C
C
C
C
C
C
Steels
up to
850
N/mm
2
C
C
C
C
C
C
C
C
C
C
Steels
up to
850
N/mm
2
C
C
Steels
up to
42 HRC
C
Steels
up to
52 HRC
Steels
up to
56 HRC
Steels
up to
60 HRC
Hard
machining
over
60 HRC
Stainless
and acid-
resistant
steels (INOX)
C
C
C
C
C
C
C
C
C
C
Ti, Ti alloy
and
special
steels
U
U
Cast iron
materials
C
C
C
C
C
C
C
C
C
C
Al,
AI and
Mg alloys
C
C
C
C
C
C
C
C
C
C
Copper,
brass,
bronze
U
C
C
C
C
C
C
C
recommended
U
suitable
V
limited suitability
Thread type
M
M
M
M
M
M
M
M
M
M
Colour ring
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
Order No.
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
Threaded section
M3–M10 M3–M20 M3–M10 M2–M20 M3–M10 M3–M20 M3–M10 M3–M20 M3–M16 M3–M16
For through threads
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 3 x D
For blind holes
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 3 x D
Type/form
N
N
N
N
N
N
N
N
N
N
Material
HSS-E
HSS-E
HSS-E
HSS-E PM HSS-E
HSS-E
HSS-E
HSS-E PM HSS-E
HSS-E
Tolerance zone
ISO 2 6H ISO 2 6H ISO 3 6G ISO 2 6H ISO 2 6H ISO 2 6H ISO 3 6G ISO 2 6H ISO 2 6H
6HX
Surface
steam
steam
steam
TiN
steam
steam
steam
TiN
steam
TiN
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Thread Cutting Tools
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