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Cutting Tools
Overview – Hand and machine thread drills
Material group
Steels
up to
850
N/mm
2
C
C
C
C
U
U
U
C
C
Steels
up to
850
N/mm
2
Steels
up to
850
N/mm
2
Steels
up to
42 HRC
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
Cast iron
materials
Al,
AI and
Mg alloys
C
V
V
V
U
U
Copper,
brass,
bronze
C
Thread type
M
M
G
G
M
M
NPT
M
M
Colour ring
yellow
yellow
Order No.
1651
1649
1649
1649
1673
1738
1670
1676
1679
Threaded section
M3–M10
M12–M20
G 1/8"
G 1/4"–G 1"
M2–M20
M3–M20
1/16"–1"
M1–M10
M3–M30
For through threads
≤ 1 x D
≤ 3 x D
≤ 1.5 x D
≤ 3 x D
≤ 3 x D
For blind holes
≤ 1.5 x D
≤ 1.5 x D
Type/form
N/B
NR 15/C
N/C
N/B
N/B
Material
HSS
HSS
HSS
HSS
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
Tolerance zone
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
Surface
bright
bright
bright
bright
bright
bright
bright
steam
steam
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C
recommended
U
suitable
V
limited suitability
Thread Cutting Tools
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