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Cutting Tools
Overview – Machine thread drills
Material group
Steels
up to
850
N/mm
2
C
C
C
C
U
C
C
C
C
Steels
up to
850
N/mm
2
C
U
C
C
C
C
Steels
up to
850
N/mm
2
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)
Ti steels,
Ti alloys,
special
steels
C
C
Cast iron
materials
C
U
U
U
U
U
Al,
AI and
Mg alloys
Copper,
brass,
bronze
Thread type
M
M
M
M
M
M
M
M
M
Colour ring
yellow
yellow
yellow
green
green
green
green
green
green
Order No.
1678
1682
1671
1683
1672
1684
1700
1674
1685
Threaded section
M1.4–M30
M2–M30
M2–M30
M2–M30
M3–M20
M2–M30
M3–M20
M3–M20
M3–M20
For through threads
≤ 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/B
NR 40/C
N/C
N/B
N/B
NR 40/C
NR 40/C
N/C
NR 40/C
Material
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
Tolerance zone
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
Surface
TiN
steam
TiN
steam
TiN
steam
TiN
TiN
TiCN
Page
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C
recommended
U
suitable
V
limited suitability
Thread Cutting Tools
163