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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
C
C
C
C
C
Steels
up to
850
N/mm
2
C
C
C
C
C
C
C
C
Steels
up to
850
N/mm
2
U
U
U
U
U
U
U
U
Steels
up to
42 HRC
V
V
V
V
V
V
V
V
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)
U
C
U
U
U
U
U
U
Ti steels,
Ti alloys,
special
steels
V
V
V
V
V
V
V
V
Cast iron
materials
U
U
U
U
U
U
U
U
Al,
AI and
Mg alloys
C
C
C
C
C
C
C
C
V
Copper,
brass,
bronze
C
C
C
C
C
C
C
C
Thread type
M
M
M-LH
MF
BSW
G
UNF
UNC
M
Colour ring
Order No.
1604
1618
1612
1627
1635
1640
1650
1647
1649
Threaded section
M1–M30
M2–M20
M3–M20
M2–M52 W 1/8"–W 1"
G 1/8"–G 2"
Nr. 0–80"–
1–12"
Nr. 1–64"–
1–8"
M3–M10
For through threads
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 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
≤ 3 x D
≤ 3 x D
Type/form
N
INOX
N
N
N
N
N
N
Material
HSS
HSS-E
HSS
HSS
HSS
HSS
HSS
HSS
HSS
Tolerance zone
ISO 2 6H
ISO 2 6H
ISO 2 6H
ISO 2 6H
medium
ISO 228/1
2 B
2 B
Surface
bright
bright
bright
bright
bright
bright
bright
bright
bright
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C
recommended
U
suitable
V
limited suitability
Thread Cutting Tools
161