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Cutting Tools
Overview – Machine thread drills
Material group
Steels
up to
850
N/mm
2
C
C
Steels
up to
850
N/mm
2
C
C
C
Steels
up to
850
N/mm
2
V
C
C
C
C
C
C
Steels
up to
42 HRC
U
U
V
V
V
U
C
Steels
up to
52 HRC
C
C
Steels
up to
56 HRC
C
C
Steels
up to
60 HRC
C
Hard
machining
over
60 HRC
C
Stainless
and acid-
resistant
steels (INOX)
Ti steels,
Ti alloys,
special
steels
Cast iron
materials
Al,
AI and
Mg alloys
C
Copper,
brass,
bronze
Thread type
M
M
M
M
M
M
M
M
M
M
Colour ring
red
red
red
red
red
red
red
black
Order No.
1728
1711
1711
1712
1714
1718
1715
1716
1717
1722
Threaded section
M3–M20 M5–M10 M5–M12 M3–M20 M3–M20 M3–M20 M6–M20 M6–M12 M3–M12 M3–M20
For through threads
≤ 3 x D
≤ 3 x D
≤ 1.5 x D ≤ 1.5 x D
3 x D
For blind holes
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 3 x D
≤ 3 x D
Type/form
H AZ/B
H/E
H/C
HR 40/C
H/C
HR 40/C
H/C
H/D
H/D
W/B
Material
HSS-E
HSS-E PM HSS-E PM HSS-E
HSS-E
HSS-E
HSS-E PM HSS-E PM VHM
HSS-E
Tolerance zone
ISO 2 6H ISO 2 6H
6HX
ISO 2 6H ISO 2 6H ISO 2 6H ISO 2 6H ISO 2 6H ISO 2 6H ISO 2 6H
Surface
bright
TiAIN
TiAIN
bright
steam
TiCN
TiAIN
TiCN
TiCN
bright
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C
recommended
U
suitable
V
limited suitability
Thread Cutting Tools
166