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Cutting Tools
Overview – Machine thread drills
Material group
Steels
up to
850
N/mm
2
C
C
C
C
C
C
C
C
C
C
Steels
up to
850
N/mm
2
C
C
C
C
C
C
C
C
C
C
Steels
up to
850
N/mm
2
C
C
C
C
C
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)
C
C
C
C
C
C
C
C
C
C
Ti, Ti alloy
and
special
steels
C
C
C
C
C
Cast iron
materials
C
C
C
C
C
C
C
C
C
C
Al,
AI and
Mg alloys
C
C
C
C
C
C
C
C
C
C
Copper,
brass,
bronze
C
C
C
C
C
C
C
C
C
C
C
recommended
U
suitable
V
limited suitability
Thread type
MF
MF
MF
MF
G
G
UNC
UNC
UNF
UNF
Colour ring
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
blue/red
Order No.
1779
1794
1796
1797
1798
1799
1696
1697
1658
1659
Threaded section
M4 x 0.5–
M20 x 1.5
M8 x 1.0–
M24 x 2.0
M4 x 0.5–
M20 x 1.5
M8 x 1.0–
M24 x 2.0
G1/8–G1 G1/8–G1
Nr. 4–40"–
3/4–10"
Nr. 4–40"–
3/4–10"
Nr. 4–48"–
5/8–18"
Nr. 4–48"–
5/8–18"
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
≤ 3 x D
≤ 3 x D
Type/form
N
N
N
N
N
N
N
N
N
N
Material
HSS-E
HSS-E PM HSS-E
HSS-E PM 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 228
ISO 228
2 B
2 B
2 B
2 B
Surface
steam
TiN
steam
TiN
steam
steam
steam
steam
steam
steam
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Thread Cutting Tools
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