168 / 1562
1/148
1
Cutting Tools
Overview – Machine thread drills
Material group
Thread type
M
MF
MF
MF
MF
MF
MF
MF
MF
Colour ring
yellow
yellow
yellow
yellow
green
green
green
green
Order No.
1750
1753
1727
1755
1729
1736
1739
1741
1742
Threaded section
M3–M20
M3–M30
M3–M30
M4–M30
M4–M24
M3–M30
M8–M24
M5–M30
M8–M24
For through threads
≤ 1.5 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
Type/form
N
N/B
N/B
NR 40/C
NR 40/C
N/B
N/B
N/C
N/C
Material
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E PM HSS-E
HSS-E PM
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
bright
steam
TiN
steam
TiN
steam
TiN
steam
TiN
Page
1/193
1/194
1/194
1/195
1/195
1/196
1/196
1/196
1/196
Steels
up to
850
N/mm
2
C
U
C
C
C
C
C
C
C
Steels
up to
850
N/mm
2
U
U
C
C
Steels
up to
850
N/mm
2
Steels
up to
42 HRC
U
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
C
C
C
U
Al,
AI and
Mg alloys
U
C
C
U
Copper,
brass,
bronze
C
recommended
U
suitable
V
limited suitability
Thread Cutting Tools
168