178 / 1618
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Cutting Tools
1
Thread type
G
G
G
UNC
UNC
UNC
UNC
UNF
UNF
UNF
Colour ring
yellow
yellow
blue
yellow
yellow
green
green
yellow
yellow
green
Order No.
1765
1745
1766
1768
1770
1746
1747
1772
1774
1748
Threaded section
G 1/8"–
G 1.1/2"
G 1/8"– G 1" G 1/8"–G 1"
Nr. 2–56"–
1–8"
Nr. 4–40"–
1–8"
Nr. 4–40"–
3/4–10"
Nr. 4–40"–
7/8–9"
Nr. 10–32"–
1–12"
Nr. 10–32"–
1–12"
Nr. 10–32"–
1–12"
For through threads
≤ 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
Type/form
NR 40/C
NR 40/C INOX R 40/C
N/B
NR 40/C
N/B
N/C
N/B
NR 40/C
N/B
Material
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
HSS-E
Tolerance zone
ISO 228
ISO 228
ISO 228
2 B
2 B
2 B
2 B
2 B
2 B
2 B
Surface
Bright
Steam
TiCN
Bright
Bright
Steam
Steam
Bright
Bright
Steam
Page
1/213
1/213
1/214
1/215
1/215
1/216
1/216
1/218
1/218
1/219
Steels
up to
850
N/mm
2
C
C
C
C
C
C
C
C
C
Steels
up to
1000
N/mm
2
C
C
Steels
up to
1400
N/mm
2
Steels
up to
42 HRC
Steels
up to
52 HRC
Steels
up to
56 HRC
Steels
up to
60 HRC
Hard
processing
over
60 HRC
Stainless
and acid-
resistant
steels (INOX)
C
U
Ti steels,
Ti alloys,
special
steels
Cast-iron
materials
Al, Al- and
Mg alloy
C
C
C
C
C
C
C
C
C
Copper,
brass,
bronze
Overview - Machine thread drills
Material group
C
recommended
U
suitable
V
limited suitability
Thread cutting tools
178