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Cutting Tools
Overview – Machine thread drills
Material group
Thread type
M
M
M
M
M
MF
M
M
M-LH
M-LH
Colour ring
black
black
black
white
white
yellow
yellow
Order No.
1723
1725
1726
1731
1719
1734
1720
1721
1737
1724
Threaded section
M3–M20 M1.6–M24 M1.6–M24 M3–M20 M3–M20 M3–M10 M3–M10 M3–M10 M3–M20 M3–M20
For through threads
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
W/B
WR 45/C WR 45/C
GG/C
GG/C
MS/C
MS/C
H/C
N/B
N/C
Material
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
VHM UF
HSS-E
HSS-E
Tolerance zone
ISO 2 6H ISO 2 6H ISO 2 6H ISO 2 6HX ISO 2 6HX ISO 2 6H ISO 2 6G ISO 2 6H ISO 2 6H ISO 2 6H
Surface
bright
bright
bright
Nitrated
TiAIN
bright
bright
bright
Page
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Steels
up to
850
N/mm
2
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
C
C
C
Al,
AI and
Mg alloys
C
C
C
C
C
C
Copper,
brass,
bronze
C
C
C
C
recommended
U
suitable
V
limited suitability
Thread Cutting Tools
167