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Cutting Tools
Overview – Machine thread drills
Material group
Thread type
MF
MF
MF
MF
MF
G
G
G
Colour ring
blue
blue
blue
blue
red
yellow
yellow
yellow
Order No.
1757
1730
1759
1733
1776
1763
1744
1765
Threaded section
M4–M24
M4–M20
M3–M24
M8–M20
M3–M24
G 1/8"–
G 1.1/2"
G 1/8"–
G 1.1/2"
G 1/8"–
G 1.1/2"
For through threads
≤ 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
Type/form
INOX/B
INOX/B
INOX R 40/C
INOX/C
H/B
N/B
N/B
NR 40/C
Material
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 228
ISO 228
ISO 228
Surface
steam
TiN
steam
TiN
TiCN
bright
steam
bright
Page
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Steels
up to
850
N/mm
2
C
C
C
Steels
up to
850
N/mm
2
C
Steels
up to
850
N/mm
2
C
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)
C
C
C
C
Ti steels,
Ti alloys,
special
steels
Cast iron
materials
Al,
AI and
Mg alloys
C
C
C
Copper,
brass,
bronze
C
recommended
U
suitable
V
limited suitability
Thread Cutting Tools
169